Kingdom Animalia
Linnaeus, 1758 · Animals
- Species in this portal
- 2964
- Ecological class
- 928 troglobionts, 591 trogloxenes, 529 stygobionts, 421 troglophiles, 251 accidentals, 151 stygoxenes and 93 stygophiles
- Realm
- Aquatic, Terrestrial
- Continent
- North America
- Countries
- Canada, Mexico, United States
- States and provinces
- 51 states and provinces
- Counties
- 1135
- Karst regions
- Appalachians, Black Hills, Driftless Area, Edwards Plateau and Balcones, Florida Lime Sinks, Guadalupe Mountains, Hawaii, Interior Low Plateau, Mother Lode, Other, Ozarks
- Habitats
- Cave pool, Cave lake, Cave stream, Hypotelminorheic seepage, Sump or flooded passage, Phreatic groundwater
- Cave zone
- Deep cave
- Conservation
- 981 of 2240 ranked G1 or G2; 46 federally listed
Phyla
- Acanthocephala 2 in portal
- Annelida 81 in portal
- Arthropoda 2407 in portal
- Chordata 266 in portal
- Cnidaria 1 in portal
- Mollusca 164 in portal
- Nematoda 1 in portal
- Nematomorpha 1 in portal
- Nemertea 1 in portal
- Platyhelminthes 39 in portal
- Porifera 1 in portal
Species in this portal
- Abacion lactarium G5 GA, TN
- Abacion magnum G5 AL, GA, VA
- Acanthocyclops brevispinosus IL
- Acanthocyclops einslei IL, IN
- Acanthocyclops exilis KY, TN
- Acanthocyclops parasensitivus G2 IN, KY, TN
- Acanthocyclops robustus Robusthops GA, IL, IN, KY, TN
- Acanthocyclops venustoides IL, IN
- Acanthocyclops vernalis Survannshops GA, IA, IL, IN, KY, NM, TN, TX
- Achemenides pectinatus G3 IA, IL, MN, WI
- Aclodes nicuesa
- Acris blanchardi Blanchard's Cricket Frog G5 OK
- Acris crepitans Northern Cricket Frog G4 KY
- Acris gryllus Southern Cricket Frog G5 FL
- Acroneuria abnormis Common Stone G5
- Acrotrichis lucidula G2 TN
- Actia diffidens GNR
- Adelocosa anops Kauai Cave Wolf Spider G1G2 HI
- Aedes abserratus Serrated Mosquito G5
- Aedes aurifer Golden Bog Mosquito GNR
- Aedes canadensis Woodland Pool Mosquito G5
- Aedes cinereus
- Aedes communis Snow Mosquito G5
- Aedes fitchii G5
- Aedes provocans Provoking Mosquito G5
- Aedes punctor Moustique Pointu Provocateur Canadien G5
- Aedes sticticus Floodwater Mosquito G5
- Aedes stimulans Woodland Mosquito G5
- Aedes triseriatus Eastern Treehole Mosquito G5 TN
- Aedes vexans Vexans Mosquito G5
- Agastoschizomus texanus TX
- Agelenopsis pennsylvanica Pennsylvania Grass Spider GNR IL
- Agkistrodon conanti Green-Tailed Moccasin G5 FL
- Agkistrodon contortrix Copperhead G5 AR, KY, TN
- Agonum extensicolle Extensive Harp Ground Beetle G5 AL, MO
- Agonum punctiforme Punctiform Harp Ground Beetle GNR AL, IN
- Agyneta gagnei G1G2 HI
- Agyneta hedini CO, NM
- Agyneta unimaculata GNR IL
- Alabamocreagris mortis Alabama pseudoscorpion G1G2 AL
- Alabamocreagris pecki G1G2 AL
- Albiorix anophthalmus G1G2 AZ
- Alectorobius concanensis OK
- Alectorobius kelleyi GA
- Aleochara castaneimarmotae GNR AR, IL, KY, MO, TN
- Aleochara castaneipennis G5 AL
- Aleochara fumata Rove Beetle GNR AL, TN
- Aleochara lucifuga GNR AL, IA, IL, IN, KY, TN
- Aleochara ocularis GNR IA
- Alligator mississippiensis Louisiana Alligator G5 FL
- Allocosa funerea GNR TN
- Allocosa sublata GNR AL
- Allocrangonyx hubrichti Hubricht's Long-tailed Cave Amphipod G3G4 AR, MO
- Allocrangonyx pellucidus Oklahoma Cave Amphipod G2G3 MO, OK
- Allolobophora chlorotica Green Worm VA
- Allomideopsis wichitaensis TX
- Allotexiweckelia hirsuta G2G3 TX
- Almuerzothyas comalensis GNR TX
- Alocodesmus angustatus
- Aloconota diversiseta G1 TN
- Aloconota insecta Staph Beetle GNR AL, IL, TN
- Aloconota neospelea GNR AL
- Aloconota sulcifrons Sulcate-Faced Minute Rove Beetle GNR TN
- Alucita huebneri
- Amara musculis G5 AL, KY
- Ambloplites rupestris Rock Bass G5 KY
- Amblyopsis hoosieri Hoosier Cavefish G2 IN
- Amblyopsis spelaea Northern Cavefish G2G3 KY
- Ambystoma maculatum Spotted Salamander G5 AL, AR, OH
- Ambystoma opacum Marbled Salamander G4 FL, OH
- Ambystoma tigrinum Eastern Tiger Salamander G5 FL, GA, IL
- Ameiurus catus White Catfish G5 FL
- Ameiurus melas Black Bullhead G5 AL, IL
- Ameiurus natalis Yellow Bullhead G5 AL, FL, KY
- Ameiurus nebulosus Brown Bullhead G5 FL, GA
- Ameractis satis G2G4 AL, GA, TN, VA
- Americina adusta GNR
- Americocreagris columbiana G2G3 OR, WA
- Amerigoniscus centralis G1G2 OK
- Amerigoniscus curvatus G1 GA
- Amerigoniscus georgiensis G1 GA
- Amerigoniscus gipsocolus G1G2 NM, TX
- Amerigoniscus henroti Powell Valley Terrestrial Cave Isopod G3 VA
- Amerigoniscus malheurensis G1 OR
- Amerigoniscus nicholasi G1G2 GA, TN
- Amerigoniscus proximus G1G2 GA
- Amerizus wingatei G5 IA, IL, KY, WI
- Ameroduvalius jeanneli G3 KY
- Amnestus subferrugineus
- Amnicola cora Foushee Cavesnail G1 AR, AZ
- Amnicola stygius Stygian cavesnail G1 MO
- Amoebaleria defessa GNR AL, AR, GA, IL, IN, KY, MO, TN, WI
- Amphasia interstitialis Red-Headed Ground Beetle G5 IL
- Amphibiocapillaria texensis TX
- Amplaria flucticulus CA
- Amplaria shastae G1G2 CA
- Amynthas diffringens Japanese Jumper GNR AL
- Amynthas minimus GA
- Anachemmis jungi CA
- Anahita punctulata Southeastern Wandering Spider G4 AL, GA, TN
- Anargyrtes annulata Grillo De Cueva
- Anasaitis canosus Twin-Flagged Jumping Spider AL
- Anaxyrus americanus American Toad G5 AL, IL, KY, TN
- Anaxyrus fowleri Fowler's Toad G5 GA, KY
- Anaxyrus terrestris Southern Toad G5 FL, GA
- Andrognathus corticarius Cope's Noodle Millipede G5 GA
- Aneides aeneus Green Salamander G3 AL, GA, TN
- Anevrina olympiae GNR IA
- Anguilla rostrata American Eel G4 FL, GA
- Anguispira alternata AL, FL, TN
- Anguispira mordax Appalachian Tigersnail G4 KY, TN
- Anillaspis explanata CA
- Anillinus actuipennis TX
- Anillinus bexarensis TX
- Anillinus cavicola AL
- Anillinus clinei AL
- Anillinus folkertsioides AL
- Anillinus forthoodensis TX
- Anillinus hildebrandti AL
- Anillinus longiceps TN
- Anillinus reddelli TX
- Anillinus smokiensis TN
- Anillinus tombarri AL
- Anillinus valentinei G3G4 AL
- Anillinus wisemanensis TX
- Anisodactylus opaculus MO
- Anisolabis howarthi G1G2 HI
- Aniulus nigrans TN
- Ankyrodrilus legaeus TN
- Anolis carolinensis Carolina Anole G5 FL, TN
- Anopheles earlei G5
- Anopheles punctipennis Woodland Malaria Mosquito G5 GA, IL, IN, KY, TN
- Anopheles quadrimaculatus Common Malaria Mosquito G5 IL, IN
- Anotylus exiguus Rove Beetle AL, IA
- Anotylus tetracarinatus Rove Beetle GNR AL
- Anthicus cervinus Cloudy Flower Beetle G5 WI
- Anthrobia coylei G2 KY, TN, VA, WV
- Anthrobia monmouthia Mammoth Cave Spider G5 AL, KY, TN, VA
- Anticarsia gemmatalis Velvetbean Caterpillar G5 AL
- Antrobia culveri Tumbling Creek cavesnail G1 MO
- Antrodiaetus unicolor GNR AL, GA, TN
- Antrolana lira G2G4 VA, WV
- Antrorbis breweri Manitou cavesnail G1 AL
- Antrorbis tennesseensis Tennessee Cavesnail GNR TN
- Antroselates spiralis Shaggy cavesnail G3 IN, KY
- Antroxestoblatta immaculata
- Anurida tullbergi IA
- Anyphaena celer GNR AL
- Aphaenogaster tennesseensis Tennessee Collared Ant G5 KY
- Apheloria corrugata KY
- Apheloria montana G5 TN
- Apheloria virginiensis Black-And-Gold Flat Millipede G5 KY
- Aphrastochthonius grubbsi Grubb's Cave Pseudoscorpion G1 CA
- Aphrastochthonius pachysetus G1G2 NM
- Aphrastochthonius pecki G1 AL
- Aphrastochthonius similis Carlow's Cave Pseudoscorpion G1 CA
- Aphrastochthonius tenax G1G2 AL
- Aphredoderus gibbosus FL
- Aplexa hypnorum Moss Bladder Snail
- Apocheiridium reddelli G1G2 TX
- Apochthonius coecus G1G2 VA
- Apochthonius colecampi G1G2 MO
- Apochthonius diabolus G1 AR
- Apochthonius forbesi G1G2 OR
- Apochthonius grubbsi G1G2 CA
- Apochthonius hobbsi Buckskin Cave Pseudoscorpion G1 OH
- Apochthonius holsingeri G1G2 VA
- Apochthonius indianensis Indiana Cave Pseudoscorpion G1 IN
- Apochthonius malheuri Malheur Pseudoscorpion G1G2 OR
- Apochthonius minor G1 GA, TN
- Apochthonius moestus GNR KY
- Apochthonius mysterius Mystery Cave Pseudoscorpion G1G2 MO
- Apochthonius paucispinosus Dry Fork Valley Cave Pseudoscorpion G1 WV
- Apochthonius russelli Russell Cave Pseudoscorpion G1 AL
- Apochthonius titanicus G2 AR
- Apochthonius typhlus Stone County Cave Pseudoscorpion G1G2 MO
- Aporrectodea longa Deep-Burrowing Longworm GNR AL
- Aporrectodea rosea Pink Soilworm GNR KY, VA
- Aporrectodea trapezoides AL, GA, IL, KY, TN, WV
- Aporrectodea tuberculata IA, MN
- Aporrectodea turgida VA
- Appaleptoneta barrowsi G1 AL
- Appaleptoneta credula G1 AL
- Appaleptoneta fiskei GNR GA
- Appaleptoneta jonesi G1 AL
- Aquarius conformis GNR OK
- Aquarius remigis North American Common Water Strider GNR AR, IL, MO, OK
- Araneus cavaticus Barn Orbweaver GNR AL, KY
- Araneus diadematus Cross Orbweaver GNR
- Araneus marmoreus Marbled Orbweaver G5 TN
- Arcteonais lomondi Aquatic Oligochaete Worm GNR GA
- Arenophilus bipuncticeps Northern Short-Clawed Centipede GNR GA
- Argyrodes nephilae AL
- Arianops cavernensis GNR AL
- Arianops gorei TN
- Arianops jeanneli G1 VA
- Arianops pecki TN
- Arianops steevesi GNR AL
- Arianops stygica G1 TN
- Arion fasciatus Banded Slug G5
- Armadillidium nasatum Nosy Pill Woodlouse GNR AR, IL, KY, OK, TN
- Armadillidium vulgare Common Pill Woodlouse GNR AL, AR, GA, IL, MO, TN
- Arrhopalites benitus IA
- Arrhopalites caecus IA, TN
- Artesia subterranea G1G2 TX
- Artesia welbourni G1G2 TX
- Atheta alabama GNR AL
- Atheta annexa G5 AL, FL, GA, IA, TN
- Atheta klagesi G5 GA
- Atheta lucifuga G4 AL, FL, GA, TN
- Atheta troglophila G4 AL, FL, GA, IA, OK, TN
- Atranus pubescens GNR AL, AR, GA, IL, IN, KY, MO, TN
- Attagenus brunneus GNR IA
- Attheyella illinoisensis GA, IN, TN
- Attheyella nordenskioldii IL, IN
- Attheyella pilosa GA
- Australinocreagris grahami G1G2 CA
- Austrotyla awishoshola NM
- Austrotyla coloradensis CO
- Austrotyla montivaga NM
- Austrotyla specus IL, MO
- Austrotyla stephensoni CO
- Axonopsella bakeri FL, TX
- Azilia affinis Longjawed Orb Weavers AL, FL
- Bactrurus angulus Cumberland Gap Cave Amphipod G1 TN, VA
- Bactrurus brachycaudus G4 IL, MO
- Bactrurus cellulanus GX IN
- Bactrurus hubrichti Kansas Well Amphipod G4 KS, MO, OK, VA
- Bactrurus mucronatus G5 AR, IA, IL, IN, MI, MO, OH
- Bactrurus pseudomucronatus False Sword-tailed Cave Amphipod G2G3 AR, MO
- Bactrurus speleopolis Cave City Cave Amphipod G1 AR
- Bactrurus wilsoni G1G2 AL
- Balantiopteryx plicata Gray Sac-Winged Bat
- Balconorbis coronae TX
- Balconorbis uvaldensis Balcones ghostsnail G1G2 TX
- Banksula californica Alabaster Cave Harvestman GH CA
- Banksula galilei Galile's Cave Harvestman G1 CA
- Banksula grahami G2G3 CA
- Banksula grubbsi Grubbs' Cave Harvestman G1 CA
- Banksula martinorum Martins' Cave Harvestman G1 CA
- Banksula melones Melones Cave Harvestman G1 CA
- Banksula rudolphi Rudolph's Cave Harvestman G1 CA
- Banksula tuolumne Tuolumne Cave Harvestman G2 CA
- Banksula tutankhamen King Tut Cave Harvestman G1 CA
- Basacallis tarachodes GNR FL
- Basilia boardmani G3 FL
- Bathynella fraterna CA
- Bathynella germanitas CA
- Bathynella riparia CO
- Bathyphantes alboventris Notch-Tipped Shield Sheetweaver GNR IL, TN
- Bathyphantes nigrinus Donker Wevertje GNR IN
- Bathyphantes pallidus Pale Sheetweb Weaver G5 GA, IL, MO, TN
- Bathyphantes reprobus Reprobus Sheetweb Weaver GNR
- Bathyphantes weyeri Wide Shield Sheetweaver G4 AR, CO, IN, KY, ME, OH, ON, PA, QC, VA, WI, WV
- Batriasymmodes greeveri G1G2 TN
- Batriasymmodes monstrosus VA
- Batriasymmodes parki GH WV
- Batriasymmodes quisnamus G3 KY, TN
- Batriasymmodes spelaeus G3G4 AL, GA, TN
- Batriasymmodes troglodytes G1G2 AL
- Batrisodes barri G1G2 TN
- Batrisodes cavernosus G1 AL
- Batrisodes clypeospecus G1G2 TN
- Batrisodes cryptotexanus Coffin Cave Mold Beetle G2 TX
- Batrisodes denticollis VA
- Batrisodes dentifrons G1G2 TX
- Batrisodes fanti G1G2 TX
- Batrisodes feminiclypeus G1G2 TX
- Batrisodes ferulifer G1 TN
- Batrisodes gemmoides G1 TN
- Batrisodes gemmus G1 TN
- Batrisodes gravesi G3 TX
- Batrisodes grubbsi G1G2 TX
- Batrisodes henroti G2G3 KY
- Batrisodes hubrichti G1 KY
- Batrisodes incispes G1 TX
- Batrisodes jocuvestus G1 AL
- Batrisodes jonesi G2G3 AL
- Batrisodes krekeleri IN
- Batrisodes lineaticollis G5 AL, GA, TN
- Batrisodes pannosus G1 TN
- Batrisodes pekinsi G1 TX
- Batrisodes profundus G1G2 AL
- Batrisodes reyesi G2G3 TX
- Batrisodes rossi GNR IL
- Batrisodes schmitti TN
- Batrisodes shadeae G1 TX
- Batrisodes specus G3G4 AL, TN, TX
- Batrisodes subterraneus G1 AL
- Batrisodes texanus Inner Space Cavern Mold Beetle G1G2 TX
- Batrisodes tumoris G1 AL
- Batrisodes valentinei G2G4 AL, TN
- Batrisodes venyivi Helotes Cave Mold Beetle G1 TX
- Batrisodes wartoni G1G2 TX
- Bdellodrilus illuminatus TN, WV
- Belba bulbipedata G1 KY
- Bembidion affine GNR AL
- Bembidion lacunarium Greenbrier Riverbank Ground Beetle GNR AL, GA, IA, IL, KY, TN
- Bembidion nigripes G5 AL
- Bembidion texanum Simple Riverbank Ground Beetle GNR IL, MO, OK
- Bertkauia crosbyana AL
- Bibio xanthopus Yellow-Footed March Fly GNR
- Bicornucandona fineganensis GNR TX
- Bimastos heimburgeri GNR IL
- Bimastos longicinctus IL
- Bimastos rubidus Gilt-Tail GNR AL, GA, IA, IL, KY, MO, NC, TN, VA
- Bimastos tumidus AL, GA, MO, TN, VA
- Bimastos zeteki GA, TN
- Bishopella jonesi G1 AL
- Bishopella laciniosa Bishop's Harvestman AL, FL, GA, TN
- Bishopella marianna FL
- Bittacomorpha clavipes Phantom Crane Fly GNR
- Blaberus giganteus Caribbean Giant Cockroach
- Blackburnia aaae G1G2 HI
- Blackburnia howarthi G1G2 HI
- Blancosoma scaturgo G1G2 CO
- Blaniulus guttulatus Snake Millepede G5 GA
- Blarina brevicauda AL, KY
- Blarina carolinensis Southern Short-Tailed Shrew G5 AR, FL
- Bleptina caradrinalis Bent-Winged Owlet G5 AL
- Boisea trivittata Boxelder Bug GNR IL
- Bolitophila cinerea GNR
- Bolitophila hybrida GNR IN
- Bolitophila perlata GNR
- Bos taurus Taurine Cattle G5 KY
- Bosmina longirostris Common Long-Nosed Waterflea GNR KY, TN
- Bowmanasellus sequoiae Sequoia Cave Isopod G2 CA
- Brachinus fumans American Bombardier Beetle GNR MO
- Brachycybe lecontii G5 AR
- Brachycybe petasata TN
- Brachycybe producta CA
- Brachydesmus superus Compact Flat-Backed Millipede PA, VA
- Brackenridgia ashleyi Ashley's Terrestrial Cave Isopod G1G3 AR, MO
- Brackenridgia cavernarum G3G4 NM, TX
- Brackenridgia reddelli G2G3 TX
- Bradycellus rupestris Rock-Dwelling Harp Ground Beetle G5 AL
- Bradysia forficulata GNR GA
- Brathinus nitidus G4 AL, KY, TN
- Bremia caricis
- Bryocamptus morrisoni Morrison's Cave Copepod G3G4 IN, KY, MD
- Bryocamptus newyorkensis TN
- Bryocamptus nivalis IN
- Caconemobius albus HI
- Caconemobius howarthi Howarth's Cave Cricket G1G2 HI
- Caconemobius paralbus HI
- Caconemobius uuku HI
- Caconemobius varius Kuamana Cave Cricket G1G2 HI
- Caecidotea acuticarpa G2G3 KS, OK
- Caecidotea adenta G1G2 OK
- Caecidotea alabamensis G3G4 AL, IL, IN, KY, TN
- Caecidotea alleghenyensis Allegheny Spring Isopod G1G2 MD
- Caecidotea ancyla G3G4 AR, MO, OK
- Caecidotea antricola G5 AR, IL, KY, MO, OH, OK
- Caecidotea barri Clifton Cave Isopod G1 KY
- Caecidotea beattyi Beatty's Groundwater Isopod G3G4 IL, IN, MO
- Caecidotea bicrenata Two-toothed Cave Isopod G5 AL, IL, KY, TN
- Caecidotea bilineata G2G3 TX
- Caecidotea cannula Cannulate Cave Isopod G1 WV
- Caecidotea carolinensis Bennett's Mill Cave Isopod G2G3 NC, SC
- Caecidotea catachaetus AL, GA, TN
- Caecidotea circulus G1G2 TN
- Caecidotea cumberlandensis Cumberland Gap Cave Isopod G1G2 VA
- Caecidotea cyrtorhynchus G1 GA
- Caecidotea dauphina AL
- Caecidotea dimorpha G2G3 AR, IN, MO
- Caecidotea dunlaporum Dunlap's Groundwater Isopod GNR IN
- Caecidotea extensolinguala MO
- Caecidotea filicispeluncae Fern Cave Isopod G1 OH
- Caecidotea fisherorum GNR VA
- Caecidotea fonticulus GNR AR
- Caecidotea franzi Franz's Cave Isopod G2G4 KY, MD, PA, WV
- Caecidotea fustis Fustis Cave Isopod G3 MO
- Caecidotea hobbsi Florida Cave Isopod G1G2 FL, GA, VA
- Caecidotea insula Kindt's Cave Isopod G1 OH
- Caecidotea jordani Jordan's Cave Isopod G2G3 IN
- Caecidotea kendeighi Kendeigh's Groundwater Isopod G5 IA, IL, IN, MO, OH
- Caecidotea lesliei G1G2 IL, MO
- Caecidotea mackini GNR OK
- Caecidotea macropropoda Bat Cave Isopod G3 AR, OK
- Caecidotea metcalfi G1G2 KS
- Caecidotea nickajackensis Nickajack Cave Isopod G1 AL, AR, GA, KY, MO, TN, VA
- Caecidotea nordeni Norden's Groundwater Isopod GH MD
- Caecidotea nortoni Norton's Cave Isopod G2G3 TN
- Caecidotea ornatus G1 VA
- Caecidotea packardi G2G4 IL, KY, MO
- Caecidotea paurotrigona G1G2 LA, MS
- Caecidotea putea American Waterslaters G1G3 FL, GA
- Caecidotea recurvata Southwest Virginia Cave Isopod G5 TN, VA
- Caecidotea reddelli G3G4 TX
- Caecidotea richardsonae Tennessee Valley Cave Isopod G5 AL, GA, TN, VA
- Caecidotea rotunda Frost Cave Isopod G2G4 IN, OH
- Caecidotea salemensis Salem Cave Isopod G4 AR, MO
- Caecidotea scyphus G1G2 TN, WV
- Caecidotea serrata Serrated Cave Isopod G1G2 MO
- Caecidotea simonini G1 WV
- Caecidotea simulator G2G3 AR, KS, OK
- Caecidotea sinuncus G1 WV
- Caecidotea spatulata G3G4 IL, MO, VA
- Caecidotea steevesi Steeves' Cave Isopod G3G4 AR, KS, MO, OK
- Caecidotea stiladactyla Slender-fingered Cave Isopod G3G4 AR, MO, OK
- Caecidotea stygia Stygian Cave Isopod G5 IL, IN, KY, MO, MS, OH, TN, VA
- Caecidotea teresae GX IN
- Caecidotea tridentata G1G2 AR, IL, KS, MO, OK
- Calasellus californicus G2 CA, OR
- Calasellus longus G1 CA
- Calathaemon holthuisi Purgatory Cave Shrimp G1G2 TX
- Calathus opaculus GNR KY
- Calicina cloughensis Clough Cave Harvestman G1 CA
- Califobathynella noodti CA
- Califobathynella teucherti CA
- Californibathynella californica CA
- Calileptoneta briggsi Briggs' Cave Spider G1 CA
- Callinectes sapidus American Blue Crab GNR FL
- Calliphora terraenovae NM
- Calliphora vicina GA, IL
- Calliphora vomitoria Orange-Bearded Bluebottle GNR GA, IN
- Callobius bennetti Bennett's Laceweaver G5 IN
- Caloptilia alnivorella Alder Leafminer GNR
- Calymmaria persica GNR AL, GA, IL, KY, TN, VA
- Calymmaria virginica G1 TN
- Cambala annulata Violet Ridged Millipede G5 AL, FL, GA, IN, KY, TN
- Cambala hubrichti G5 GA, NC, TN
- Cambala minor Amber Ridged Millipede G5 AL, AR, GA, IL, IN, KY, MO, OK, TN, VA, WV
- Cambala ochra AL, GA
- Cambala reddelli NM, TX
- Cambala speobia G4 Mexico, TX
- Cambarincola alienus G1G2 KY, TN
- Cambarincola demissus WV
- Cambarincola dubius G1G2 IN
- Cambarincola fallax GNR TN, WV
- Cambarincola heterognathus WV
- Cambarincola holostomus TN
- Cambarincola leoni G3 FL
- Cambarincola leptadenus G1 TN
- Cambarincola manni FL
- Cambarincola marthae G1G2 TN
- Cambarincola philadelphicus FL, IN, KY, TN, VA, WV
- Cambarincola sheltensis G1G2 AL
- Cambarincola steevesi G3 KY
- Cambarincola susanae
- Cambarincola vitrea FL
- Cambarus aculabrum Benton County Cave Crayfish G1 AR, MO
- Cambarus bartonii Appalachian Brook Crayfish G5 GA, IN, KY, TN, VA, WV
- Cambarus cryptodytes Dougherty Plain Cave Crayfish G2G3 FL, GA
- Cambarus hamulatus Prickly Cave Crayfish G3G4 AL, KY, TN
- Cambarus hubbsi Hubbs' Crayfish G3
- Cambarus hubrichti Salem Cave Crayfish G4 MO
- Cambarus jonesi Alabama Cave Crayfish G2 AL
- Cambarus laconensis Lacon Exit Cave Crayfish G1 AL
- Cambarus latimanus Variable Crayfish G5 GA, TN
- Cambarus nerterius Greenbrier Cave Crayfish G1 WV
- Cambarus parvoculus Mountain Midget Crayfish G5 KY
- Cambarus pecki Phantom Cave Crayfish G1G2 AL
- Cambarus setosus Bristly Cave Crayfish G3 AR, MO, OK
- Cambarus sheltae Shelta Cave Crayfish G1 AL
- Cambarus speleocoopi Sweet Home Alabama Cave Crayfish G1 AL
- Cambarus striatus Ambiguous Crayfish G5 AL, GA, TN
- Cambarus subterraneus Delaware County Cave Crayfish G1 KY, OK
- Cambarus tartarus Oklahoma Cave Crayfish G1 OK
- Cambarus tenebrosus Cavespring Crayfish G5 AL, GA, IL, IN, KY, TN
- Cambarus veitchorum White Spring Cave Crayfish G1 AL
- Cambarus zophonastes Hell Creek Cave Crayfish G1 AR
- Camponotus sayi Say's Carpenter Ant GNR AR
- Campostoma anomalum Central Stoneroller G5 KY
- Campostoma oligolepis Largescale Stoneroller G5 AL, KY
- Canis dirus Dire Wolf
- Canis familiaris Domestic Dog GNA AL
- Canis latrans Coyote G5 KY, OK
- Canis rufus Red Wolf G1 AL
- Canthon imitator NM
- Carcinophora americana
- Carebara urichi
- Carnarimelita janstocki HI
- Carphophis amoenus Common Wormsnake G5 AL, GA
- Cartodere constricta Plaster Beetle GNR IA
- Carychium clappi Appalachian Thorn G5 AL
- Carychium exile Ice Thorn G5 AL, IL, KY, TN
- Carychium mexicanum Southern Thorn G5 AL, IL
- Carychium nannodes File Thorn G5 IL, TN
- Carychium riparium Floodplain Thorn G2 IL
- Carychium stygium Cave thorn G3 AL, KY, TN
- Castor canadensis American Beaver G5 AL, FL, GA, IL, TN
- Cathartes aura Turkey Vulture G5 GA, IL, TN
- Catopocerus alabamae GNR AL
- Catopocerus appalachianus GNR AL, TN
- Catopocerus jonesi GNR AL
- Catops gratiosus G5 AL, GA, IA, IL, IN, KY, MA, MD, NY, OH, PA, TN, VA, WV
- Catostomus commersonii White Sucker G5 AL, KY, TN
- Cauloxenus stygius Northern Cavefish Copepod G1G2 IN, KY
- Causeyella causeyae AR
- Causeyella dendropus Causeyella Cave Millipede G3 AR, MO
- Causeyella youngsteadtorum AR
- Cavaticovelia aaa G1G2 HI
- Cavernicola pilosa Barbeiro
- Cemophora coccinea Scarlet Snake G5 GA
- Centromerus cornupalpis Eastern Spurred Sheetweaver GNR AL, IL
- Centromerus denticulatus GNR AL, GA
- Centromerus latidens G5 AL, FL, GA, IL, KY, MO, TN
- Centromerus tennapex TN
- Ceraticelus fissiceps G5 AL
- Ceraticelus minutus G5
- Ceratophysella boletivora Springtail GNR IL
- Ceratophysella brevis GNR IL
- Ceratophysella denticulata IA, IL, TN
- Ceratophysella engadinensis IL
- Ceratophysella lucifuga Wyandotte Cave Springtail GNR IL, IN
- Ceratozetes gracilis GNR IA, KY
- Cerobasis guestfalica Book Lice KY
- Ceuthophilus brevipes Short-Legged Camel Cricket G5
- Ceuthophilus carlsbadensis NM, TX
- Ceuthophilus conicaudus NM
- Ceuthophilus elegans IL, MO, WI
- Ceuthophilus ensifer AL, GA, TN
- Ceuthophilus gracilipes Slender-Legged Camel Cricket GNR AL, FL, GA, IL, TN
- Ceuthophilus isletae NM
- Ceuthophilus latens Black-Sided Camel Cricket GNR AL, VA
- Ceuthophilus latibuli FL
- Ceuthophilus longipes GNR NM
- Ceuthophilus maculatus Spotted Camel Cricket G5
- Ceuthophilus pallidipes KY
- Ceuthophilus palmeri
- Ceuthophilus seclusus GNR IL
- Ceuthophilus stygius Cave Camel Cricket GNR AL, IN, KY, TN
- Ceuthophilus virgatipes FL
- Ceuthophilus williamsoni GNR IL
- Chaetaspis aleyorum Aley's Cave Milliped G1 MO
- Chaetaspis attenuatus AR
- Chaetaspis debilis TN
- Chaetaspis fragilis GNR KY
- Chaetaspis mollis G1 AL, TN
- Chaetogaster diaphanus Aquatic Oligochaete Worm GNR SC
- Chaoborus albatus GNR
- Chauliodes pectinicornis Summer Fishfly GNR
- Cheiracanthium inclusum Yellow Sac Spider GNR AL
- Cheiridium reyesi G1G2 TX
- Chelydra serpentina North American Snapping Turtle G4 FL, KY
- Cherokia georgiana G4 GA
- Cheumatopsyche minuscula G5
- Chinquipellobunus madlae G4 TX
- Chinquipellobunus russelli G2G3 TX
- Chionea scita GNR KY
- Chironomus decorus GNR GA
- Chironomus plumosus Chironome Plumosus
- Chiroptonyssus robustipes NM, TX
- Chitrella archeri G1G2 TN
- Chitrella cavicola G3
- Chitrella elliotti G1G2 TX
- Chitrella major G1G2 TX
- Chitrella regina Royal Syarinid Pseudoscorpion G1 WV
- Chitrella superba G1 VA
- Chitrella welbourni G1G2 NM
- Chitrellina chiricahuae G1G2 AZ
- Chlaenius aestivus Summer Harp Ground Beetle GNR IL
- Chlamydotheca texasiensis TX
- Choctella cumminsi TN
- Chrosomus erythrogaster Southern Redbelly Dace G5 AL
- Chrysops univittatus One-Striped Deer Fly G5 TN
- Chthonius cryptus
- Chthonius paludis GA, TN
- Cicurina arcata G5 IL
- Cicurina arcuata G5 GA, IL, TN
- Cicurina bandera G2G3 TX
- Cicurina bandida Bandit Cave Meshweaver G2 TX
- Cicurina baronia Robber Baron Cave Meshweaver G1 TX
- Cicurina barri G1G2 TX
- Cicurina breviaria AL, TN
- Cicurina brevis Small-Eared Meshweaver G5 IL
- Cicurina browni G1G2 TX
- Cicurina brunsi TX
- Cicurina bullis TX
- Cicurina buwata G1G2 TX
- Cicurina caliga GNR TX
- Cicurina cavealis GNR IL
- Cicurina caverna G1G2 TX
- Cicurina coryelli G1G2 TX
- Cicurina delrio TX
- Cicurina ezelli G1G2 TX
- Cicurina gruta G1G2 TX
- Cicurina holsingeri G1G2 TX
- Cicurina hoodensis GNR TX
- Cicurina joya TX
- Cicurina loftini TX
- Cicurina machete G1G2 TX
- Cicurina madla Madla Cave Meshweaver G1 TX
- Cicurina mckenziei G1G2 TX
- Cicurina medina G1G2 TX
- Cicurina menardia G1G2 TX
- Cicurina minima GNR AL
- Cicurina mirifica TX
- Cicurina mixmaster GNR TX
- Cicurina neovespera TX
- Cicurina obscura G1G2 TX
- Cicurina orellia G1G2 TX
- Cicurina pablo G1G2 TX
- Cicurina pallida GNR GA, IL, IN, KY
- Cicurina pastura G1G2 TX
- Cicurina patei G1G2 TX
- Cicurina placida GNR TN
- Cicurina platypus TX
- Cicurina porteri G1G2 TX
- Cicurina puentecilla G1G2 TX
- Cicurina rainesi G1G2 TX
- Cicurina reclusa G1G2 TX
- Cicurina reddelli G1G2 TX
- Cicurina russelli G1G2 TX
- Cicurina sansaba G1G2 TX
- Cicurina selecta G1G2 TX
- Cicurina serena G1G2 TX
- Cicurina sheari G1G2 TX
- Cicurina sprousei G1G2 TX
- Cicurina stowersi G1G2 TX
- Cicurina suttoni G1G2 TX
- Cicurina travisae G1G2 TX
- Cicurina troglobia GNR TX
- Cicurina ubicki G1G2 TX
- Cicurina uvalde G1G2 TX
- Cicurina varians GNR NM
- Cicurina venefica G1G2 TX
- Cicurina vespera Government Canyon Bat Cave Meshweaver G1 TX
- Cicurina vibora G1G2 TX
- Cicurina wartoni Warton Cave Meshweaver G1 TX
- Cicurina watersi G1G2 TX
- Cicurina wiltoni G1 AL
- Cirolanides texensis G4 Mexico, TX
- Cirolanides wassenichae TX
- Cladura flavoferruginea GNR IN
- Cleidogona baroqua
- Cleidogona crucis
- Cleidogona crystallina
- Cleidogona hoffmani G3 VA
- Cleidogona mayapec
- Cleidogona pecki
- Cleidogona unita IL
- Clethrionomys gapperi
- Climacia areolaris GNR
- Coecobrya kukae G1G2 HI
- Coecobrya lua G1G2 HI
- Coecobrya nupa G1G2 HI
- Coecobrya tenebricosa GNR AL, IL
- Coloradesmus aquiliensis G1G2 CO
- Coloradesmus beckleyi CO
- Coloradesmus hopkinsae CO
- Coloradesmus manitou CO
- Coloradesmus warneri CO
- Coluber constrictor North American Racer G5 FL
- Columba livia Common Pigeon AR, IL
- Columbasellus acheron WA
- Colusa illecta AL
- Comalcandona gibsoni Gibson's Groundwater Ostracod TX
- Comalcandona mixoni TX
- Comalcandona tressleri TX
- Comaldessus stygius Comal Springs Diving Beetle G1 TX
- Conasellus burkensis GNR VA
- Conasellus communis Eastern Waterslater NY
- Conasellus forbesi Forbes' Waterslater TN
- Conasellus jeffersoni VA
- Conasellus kenki G3 DC, MD, PA, VA
- Conasellus phreaticus G2G3 VA
- Conasellus pricei Price's Cave Isopod G5 MD, PA, VA, WV
- Conasellus washingtoni DC
- Condeicampa langei GNR TN
- Conicera similis AL
- Conosoma velocipes
- Conotyla blakei G4 MD, PA
- Conotyla bollmani Bollman's Cave Millipede G3 IN
- Conotyla vista GH WV
- Copestylum vesicularium Iridescent Bromeliad Fly G5 GA
- Coquillettidia perturbans Cattail Mosquito G5
- Coragyps atratus Black Vulture G5 AL, FL
- Coras juvenilis GNR GA, KY
- Coras lamellosus GNR AL, IL
- Coras taugynus TN
- Corbicula fluminea Asian Basket Clam G5 AL, FL
- Cordylophora caspia Ponto-Caspian Freshwater Hydroid GNR FL
- Corydalus cornutus Dobsonfly GNR GA
- Corynorhinus rafinesquii Eastern Big-Eared Bat G3 AL, AR, GA, IN, KY, NC, TN
- Corynorhinus townsendii Pacific Townsend's Big-Eared Bat G4 AR, KY, OK, PA
- Cottus bairdii Mottled Sculpin G5 AL, GA, KY, TN
- Cottus carolinae Banded Sculpin G5 AL, GA, IL, KY, OK, TN
- Cottus specus Grotto sculpin G2 MO
- Crangonyx anomalus Large Male Crangonyctid G4 IL, IN, OH
- Crangonyx antennatus Appalachian Valley crangonyctid G5 AL, GA, TN, VA
- Crangonyx baculispina Lancaster County Amphipod G1 VA
- Crangonyx barri Barr's Cave Amphipod G5 IN, KY
- Crangonyx bousfieldi G2 OH
- Crangonyx caecus G1 KY
- Crangonyx castellanum G1 KY
- Crangonyx consimilis G4 AL, GA, TN
- Crangonyx cooperi G2 AL
- Crangonyx dearolfi Pennsylvania Cave Amphipod G2 MD, PA
- Crangonyx floridanus Florida Crangonyctid G5 AL, FL, KY, MO, NC, PA, SC, TN
- Crangonyx forbesi Forbes Crangonyctid G5 IL, IN, KY, MO, OH, OK
- Crangonyx gracilis Northern Lake Crangonyctid G4 IN, KY, WV
- Crangonyx grandimanus Florida Cave Amphipod G2G3 FL
- Crangonyx hobbsi Hobb's Cave Amphipod G2G3 FL
- Crangonyx indianensis Indiana Cave Amphipod G3 IN
- Crangonyx insolitus G1 MO
- Crangonyx lewisi Lewis' Cave Amphipod G2 IN, KY
- Crangonyx longidactylus G2 KY
- Crangonyx manubrium Jackson County Cave Amphipod G1G2 FL
- Crangonyx minor Small Stream Crangonyctid G5 IL
- Crangonyx montanus G2 WV
- Crangonyx obliquus Oblique-Hand Crangonyctid G5 AR
- Crangonyx ohioensis Ohio Cave Amphipod G1G2 IN, KY, OH
- Crangonyx packardi Packard's Cave Amphipod G4 IL, IN, KS, KY, MO
- Crangonyx palustris G4 NC
- Crangonyx parhobbsi Florida Big Bend Cave Amphipod G1G2 FL, GA
- Crangonyx pseudogracilis Northern River Crangonyctid G5 KY
- Crangonyx richmondensis Alpine Lake Crangonyctid G5 AK, FL
- Crangonyx rivularis Ontario Stream Crangonyctid G5 KY
- Crangonyx setodactylus Hairy-Fingered Crangonyctid G5 OH
- Crangonyx shoemakeri Shoemaker Crangonyctid G5 IA, IL, IN, MI, OH, VA
- Crangonyx specus G1 KY
- Crangonyx sulphurium Sulphurous Cave Amphipod G1 FL
- Creaserinus fodiens Digger Crayfish G5 IL
- Creophilus maxillosus Hairy Rove Beetle GA
- Crosbycus goodnighti VA
- Crosbyella distincta G1G2 AR
- Crosbyella roeweri G1G2 AR
- Crosbyella spinturnix GNR AL, AR, FL, GA
- Crotalus adamanteus Eastern Diamond-Backed Rattlesnake G3 FL
- Crotalus horridus Timber Rattlesnake G4 TN
- Cryptachaea porteri Cobweb Spiders GNR AL, GA, IN, NM, TN
- Cryptachaea rupicola GNR AL, IL
- Cryptobranchus alleganiensis Hellbender G3 AL
- Cryptocreagris destica CO
- Cryptocreagris steinmanni CO
- Cryptophagus valens GNR IL
- Ctenophthalmus pseudagyrtes GNR AL, GA, TN
- Ctenus captiosus Florida False Wolf Spider FL
- Culex erraticus GNR TN
- Culex pipiens Northern House Mosquito G5 IL, IN, TN
- Culex restuans White-Dotted Mosquito G5 TN
- Culex territans Northern Frog-Biting Mosquito G5 GA
- Culicoides paraensis TN
- Culiseta impatiens Impatient Mosquito G5
- Cybaeopsis pantopla G3 TN
- Cybaeopsis tibialis GNR
- Cybaeus giganteus GNR KY, TN
- Cybaeus patritus TN
- Cyclocosmia truncata Ravine Trapdoor Spider GNR GA
- Cyclocypris sharpei GNR TN
- Cyclops cavernarum GNR TX
- Cyclops learii TX
- Cyclosa conica Cone-Shaped Orbweaver G5
- Cyclotrachelus fucatus GNR IL
- Cyclotrachelus sodalis Blue-Tinged Harp Ground Beetle GNR IL
- Cylindrodesmus hirsutus
- Cylindroiulus arborum IN
- Cylisticus convexus Curly Woodlouse G5 AL, GA, IL, IN, KY, TN, VA
- Cyllopsis gemma Gemmed Satyr G5 TN
- Cyphoderus inaequalis
- Cyphoderus similis
- Cypria lacrima GNR TX
- Cypridopsis vidua Cypris Veuve (La) GNR TX
- Cyprinella spiloptera Spotfin Shiner G5 AL, KY
- Cyprinodon diabolis Devil's Hole Pupfish G1 NV
- Cyprinus carpio Eurasian Carp G5 AL
- Cyrtodesmus archimedes
- Dactylocythere arcuata G1 AL
- Dactylocythere prionata G2 KY
- Dactylocythere steevesi G4 AL, KY, TN
- Dactylocythere ungulata KY, TN
- Dactylolabis hudsonica GNR
- Dactylolabis montana GNR MO
- Darlingtonea kentuckensis G3G4 KY, TN
- Darwinula stevensoni TX
- Dasycerus nikwasi GNR AL
- Dasypus novemcinctus Nine-Banded Armadillo G5 FL
- Dasyscias franzi Shaggy ghostsnail G1 FL
- Demogorgonichthys arcanus Demon Cavefish AL
- Dendrobaena octaedra Octagonal-Tail Worm GNR GA, NC, VA
- Dendrocoelopsis americana G3 AR, MD, MO, OK, TX
- Dendrocoelopsis hymanae Lake Tahoe planarian GNR CA, NV
- Dendronucleata americana TX
- Dermacentor variabilis American Dog Tick GA, IL
- Deroceras laeve Meadow Slug IL
- Deroceras reticulatum Gray Fieldslug
- Derops divalis GNR IL
- Desmognathus abditus Cumberland Dusky Salamander G2
- Desmognathus brimleyorum Ouachita Dusky Salamander G3
- Desmognathus conanti Spotted Dusky Salamander G4 AL, GA, TN
- Desmognathus fuscus Northern Dusky Salamander KY, OH
- Desmognathus gvnigeusgwotli Cherokee Blackbelly Salamander G3 TN
- Desmognathus monticola Seal Salamander G5 AL, KY
- Desmognathus ocoee Ocoee Salamander G4 AL, GA
- Desoria trispinata GNR IL, TN
- Desoria truncata GNR TN
- Desoria violacea GNR
- Deuteraphorura jana AL
- Diacyclops alabamensis AL
- Diacyclops bicuspidatus Damhops GNR IN, KY
- Diacyclops chrisae GA, IN, MD
- Diacyclops clandestinus IL, MO, TN
- Diacyclops conversus Blue River Groundwater Copepod G2 IN
- Diacyclops crassicaudis Kompakthops GNR IN
- Diacyclops indianensis Indiana Groundwater Copepod G2 IN, TN
- Diacyclops jeanneli G1G2 IN, NC
- Diacyclops lewisi Lewis' Groundwater Copepod G1 IN
- Diacyclops navus GNR IN
- Diacyclops nearcticus G3 IN, KY, TN
- Diacyclops nikolasarburni NM
- Diacyclops salisae Salisa's Groundwater Copepod G1 IN
- Diacyclops sororum GNR IN, KY
- Diacyclops yeatmani Yeatman's Groundwater Copepod G2G3 IL, IN, MO, OK, TN
- Diadophis punctatus Ring-Necked Snake G5 AL, AR, GA, KY
- Dichogaster affinis Earthworm
- Dichogaster bolaui Earthworm
- Dicranomyia humidicola GNR KY
- Dicranomyia stulta GNR
- Dicranota flaveola GNR
- Dicrotendipes neomodestus GNR
- Didelphis virginiana Virginia Opossum G5 AL, AR, GA, OK
- Dineutus assimilis G5 MO
- Dinocheirus astutus NM
- Dinocheirus cavicola G2G3 TX
- Diplectrona marianae G1 GA
- Diplocardia caroliniana AL, NC
- Diplocardia singularis GNR IL
- Diplocardia verrucosa MO
- Discourella dubiosa IL
- Discus catskillensis Angular Disc G5
- Discus macclintocki Iowa Pleistocene Snail G1 IA
- Discus nigrimontanus Black Mountain Disc G4 TN
- Discus patulus Domed Disc G5 AL, KY, TN
- Discus whitneyi Forest Disc
- Dissochaetus oblitus GNR TN
- Docosia paradichroa
- Dohrniphora perplexa GNR AL
- Dolichopeza dorsalis GNR
- Dolichopeza tridenticulata GNR GA
- Dolichopeza venosa GNR
- Dolichopeza walleyi GNR GA
- Dolichopus fulvipes GNR
- Dolichopus penicillatus GNR
- Dolomedes scriptus Dock Spider G5 IL, IN, KY, TN
- Dolomedes tenebrosus Dark Fishing Spider G5 IL, KY, OK
- Dolomedes vittatus Banded Fishing Spider GNR AL, IL, TN
- Donnaldsoncythere hiwasseensis KY
- Donnaldsoncythere tuberosa G2 TN
- Dorosoma cepedianum American Gizzard Shad G5 AL, KY
- Dorypteryx domestica Cave Barklouse KY
- Drosophila funebris Azijnvlieg GNR
- Dryobius sexnotatus Maple Dryobius GNR KY
- Dryomyza anilis Hooded Dryomyza GNR
- Dryophytes chrysoscelis Cope's Gray Treefrog G5 AL, GA, TN
- Dryophytes cinereus Green Treefrog G5 FL, KY
- Dryophytes gratiosus Barking Treefrog G5 FL, GA
- Dryophytes squirellus Squirrel Treefrog G5 FL
- Dryophytes versicolor Gray Treefrog G5 AR
- Dugesia tigrina
- Duvalius jureceki
- Duvalius lombardii
- Eclipidrilus palustris Aquatic Oligochaete Worm TX
- Eidmannella bullata G1G2 TX
- Eidmannella delicata G1G2 TX
- Eidmannella nasuta G1G2 TX
- Eidmannella pallida Pallid Cave Spider GNR AL, AR, AZ, FL, GA, HI, IA, IL, IN, KY, MD, NM, OH, OK, PA, SC, TN, TX, VA, WV
- Eidmannella reclusa G1G2 TX
- Eidmannella rostrata G4 TX
- Eidmannella tuckeri GNR TX
- Eisenia fetida Brandling GNR KY
- Eisenia rosea IL
- Eiseniella tetraedra Square-Tailed Worm IA, VA, WV
- Eisenoides carolinensis Carolina Worm GNR IL
- Eisenoides lonnbergi NC
- Elaphoidella bidens GA
- Elaphropus ferrugineus AL, GA
- Elaphropus incurvus G5 IL
- Elaver excepta White Sac Spider G5 GA
- Eleodes eschscholtzii Pinacate De Eschscholtz NM
- Eleodes microps CA
- Eleutherodactylus planirostris Greenhouse Frog G5 FL
- Elimia athearni Knobby Elimia G3 FL
- Elimia clenchi Slackwater Elimia G3 FL
- Elimia comalensis Balcones Elimia G2 TX
- Elimia curvicostata FL
- Elimia proxima Sprite Elimia G5 GA
- Elliotta howarthi G1G2 WA
- Emblyna florens AL
- Empherozoster antaeus NM
- Enoplognatha ovata Common Candy-Striped Spider GNR
- Entomobrya bicolor GNR IA
- Entomobrya confusa GNR IA
- Entomobrya intermedia GNR IL
- Entomobrya nivalis
- Entomobrya troglodytes G2G3 CO, SD
- Entomobryoides purpurascens Springtail GNR NM
- Ephemera simulans Brown Drake G4
- Ephippiochthonius tetrachelatus Dimple-Clawed Chthonid AL, IL
- Ephippiochthonius virginicus GA
- Epicharis rustica
- Epitedia cavernicola VA
- Epitedia wenmanni Deermice Flea GNR KY, TN
- Eptesicus fuscus Big Brown Bat G5 AL, AR, GA, IL, IN, KY, OK, PA, TN, VA
- Equus caballus Domestic Horse GNA FL
- Erebomaster flavescens Golden Cave Harvestman G3 IN, KY
- Ereboporus naturaconservatus Nature Conservancy Diving Beetle GNR TX
- Eremidrilus allegheniensis G1G2 TN
- Eremidrilus coyote CA
- Eremidrilus elegans CA
- Eremidrilus felini CA
- Eremidrilus parvitheca TX
- Eremidrilus ritocsi CA
- Eremidrilus samacos TX
- Erethizon dorsatum KY
- Ergodesmus remingtoni G3 IL
- Erichsonius nanus G5 IL
- Erichsonius patella Kneecap Rove Beetle GNR AL
- Erigone autumnalis Autumn Money Spider GNR IA, IL
- Erigone infernalis GNR IN, KY
- Erigone stygius G1G2 HI
- Erpobdella dubia
- Etheostoma artesiae Redspot Darter G5 AL
- Etheostoma caeruleum Rainbow Darter G5 AL, KY
- Etheostoma duryi Black Darter G4 AL, TN
- Etheostoma flabellare Fantail Darter G5 AL
- Etheostoma swaini Gulf Darter G5 FL
- Ethopolys bipunctatus UT
- Euborellia annulipes Ring-Legged Earwig GNR AL
- Euborellia antoni
- Eucyclops agilis GNR IL, IN, KY, NM, TN
- Eucyclops bondi GA, IN
- Eucyclops elegans GA, IN, KY, TN
- Eucyclops speratus Fintagghalehops KY
- Euglandina rosea Rosy Predator Snail G5 FL
- Euglesa casertana Caserta Pea Mussel
- Euhadenoecus fragilis Tawneys Cave Cricket KY, TN, VA
- Euhadenoecus insolitus Highland Rim Crevice Cricket AL, TN
- Euhadenoecus puteanus Allegheny Crevice Cricket GNR AL, GA, KY, TN
- Eupeodes volucris Large-Tailed Aphideater G4
- Eurycea bislineata G5 OH
- Eurycea braggi Southern Grotto Salamander GNR AR, MO
- Eurycea chisholmensis Salado Salamander G1 TX
- Eurycea cirrigera Southern Two-Lined Salamander G5 AL, FL, GA, KY, TN
- Eurycea guttolineata Three-Lined Salamander G5 AL, FL, GA
- Eurycea longicauda Long-Tailed Salamander G5 AL, GA, IL, KY, MO, TN
- Eurycea lucifuga Cave Salamander G5 AL, AR, GA, IL, IN, KY, MO, OK, TN, VA, WV
- Eurycea melanopleura Dark-Sided Salamander AR, OK
- Eurycea multiplicata Many-Ribbed Salamander G4 AR
- Eurycea nerea Northern Grotto Salamander GNR AR, KS, MO
- Eurycea pterophila Fern Bank Salamander G3 TX
- Eurycea rathbuni Texas Blind Salamander G1 TX
- Eurycea robusta Blanco Blind Salamander G1 TX
- Eurycea spelaea Western Grotto Salamander G4 AR, KS, MO, MT, OK
- Eurycea tonkawae Jollyville Plateau Salamander G2 TX
- Eurycea tridentifera Comal Blind Salamander G3 TX
- Eurycea wallacei Georgia Blind Salamander G1G2 FL, GA
- Eurycea waterlooensis Austin Blind Salamander G1 TX
- Eurycea wilderae Blue Ridge Two-Lined Salamander G5 TN
- Euryurus erythropygos G3 IN
- Euryurus evides AR
- Euryurus leachii Log Lurker G4 AL, KY
- Euschoengastia pipistrelli AL, GA, TN
- Euschoengastia staffordi AL
- Eustala anastera Orb Weaver G5
- Eustilicus condei NM, TX
- Eutrichota affinis GNR IN
- Eutrichota lipsia GNR IN
- Eutrombicula alfreddugesi AL
- Exechia attrita
- Exechia auxiliaria
- Exechia bifurcata
- Exechia obediens GNR
- Exechia shawi TN
- Exechia umbratica GNR IN
- Exechiopsis nugax
- Faiditus cancellatus GNR AL
- Faxonius neglectus Ringed Crayfish G5 MO, OK
- Faxonius rusticus Rusty Crayfish G5 MO
- Faxonius stygocaneyi Caney Mountain Cave Crayfish G1 MO
- Faxonius validus Powerful Crayfish G5 AL
- Faxonius virilis Virile Crayfish G5 MO
- Felis rufus AR
- Feralia jocosa Jocose Sallow G5
- Fissilicreagris imperialis Empire Cave Pseudoscorpion G1 CA
- Flabellorhagidia pecki G1G2 ID
- Folsomia bisetosa GNR IL
- Folsomia candida Springtail GNR AL, AR, GA, IA, IL, KY, MN, MO, NM, TN
- Folsomia elongata GNR IL
- Folsomia fimetaria Springtail GNR KY
- Folsomia nivalis GNR IA, IL, WI
- Folsomia penicula GNR AL
- Folsomia prima GNR IA, IL
- Folsomia stella Springtail GNR IA, IL, MN, TN, WI
- Folsomia variabilis IL
- Folsomides americanus IA
- Fontigens aldrichi Hoosier Springsnail G4 MO
- Fontigens antroecetes Enigmatic ghostsnail G2 IL, MO
- Fontigens bottimeri Appalachian Springsnail G2G3 DC, MD, MO, VA
- Fontigens cryptica Hidden springsnail G1 IN, KY
- Fontigens morrisoni Virginia springsnail G2 VA
- Fontigens orolibas Blue Ridge Springsnail G3 VA
- Fontigens proserpina Proserpine Springsnail G1 MO
- Fontigens tartarea Organ cavesnail G2 MD, VA, WV
- Fontigens turritella Greenbrier Cavesnail G1 WV
- Forbesichthys agassizii Spring Cavefish GNR TN
- Forbesichthys papilliferus G3 IL, KY, TN
- Forcipomyia pholetor HI
- Foveacheles auricularia CA
- Foveacheles goffi G1G2 HI
- Foveacheles tenorioae G1G2 HI
- Foveacheles titanica G2G3 CA
- Foveacheles tuktoyaktukensis WV
- Friesea claviseta Bark-Tretornspringhale GNR IA
- Fumonelix wetherbyi Clifty Covert G2 TN
- Fundulus notatus Blackstripe Topminnow G5 AL
- Gabrius microphthalmus G5 IL
- Gaeolaelaps queenslandicus IL
- Galba modicella Rock Fossaria
- Galerita bicolor GNR MO
- Galerita lecontei AL
- Gallus gallus Red Junglefowl G5 KY
- Galumna alata Mite G1G2 KY
- Gambusia affinis Western Mosquitofish G5 AL, FL
- Gambusia holbrooki Eastern Mosquitofish G5 FL
- Gammarus acherondytes Illinois Cave Amphipod G2G3 IL
- Gammarus cohabitus G1G2 PA
- Gammarus limnaeus GNR IL, MO
- Gammarus minus GNR AL, AR, GA, IL, IN, KY, MD, MO, OH, OK, PA, TN, VA, WV
- Gammarus minus tenuipes VA, WV
- Gammarus pseudolimnaeus Northern Spring Amphipod G5 IA, IL
- Gammarus troglophilus GNR IL, MO
- Gastrellarius honestus G5 KY
- Gastrocopta abbreviata Plains Snaggletooth G4 IL
- Gastrocopta armifera Armed Snaggletooth G5 IL, KY
- Gastrocopta contracta Bottleneck Snaggletooth G5 IL, KY
- Gastrocopta pentodon Comb Snaggletooth IL
- Gastrocopta similis Great Lakes Snaggletooth G5 IL
- Gastrodonta interna Brown Bellytooth G5 AL, GA, TN
- Gastrophryne carolinensis Eastern Narrow-Mouthed Toad G5
- Gastrophryne olivacea Great Plains Narrow-Mouthed Toad G5 TX
- Gaucelmus augustinus G3 AL, FL, GA, MS, TX
- Gaucelmus cavernicola
- Gaucelmus strinatii
- Gaucelmus tropicus
- Gennadota puberula IA
- Geocentrophora cavernicola G2 KY, VA, WV
- Geocolus caecus AL
- Geodromicus brunneus GNR AL, GA, IL, TN
- Geomys bursarius Plains Pocket Gopher G5 KY
- Girardia dorotocephala Flatworm NV
- Glacicavicola bathyscioides G3 ID, WY
- Globocreagris nigrescens VA
- Glyphyalinia carolinensis Spiral Mountain Glyph G4 TN
- Glyphyalinia cryptomphala Thin Glyph G5 AL, GA, KY, TN
- Glyphyalinia indentata Carved Glyph G5 AL, GA, KY, TN, VA
- Glyphyalinia latebricola Stone Glyph G2 AL, IL
- Glyphyalinia lewisiana Pale Glyph G4 KY, TN
- Glyphyalinia luticola Furrowed Glyph G4 IL
- Glyphyalinia pecki Blind Glyph G1G2 AL
- Glyphyalinia praecox Brilliant Glyph G4 GA, TN
- Glyphyalinia rhoadsi Sculpted Glyph G5 GA, TN
- Glyphyalinia sculptilis Suborb Glyph G4 AL, GA, KY, TN
- Glyphyalinia specus Hollow glyph G4 AL, GA, KY, TN, WV
- Glyphyalinia wheatleyi Bright Glyph G5 GA, TN
- Gnathonaroides pedalis GNR
- Gnophomyia tristissima GNR IL
- Gopherus polyphemus Gopher Tortoise G3
- Gordionus lineatus TN
- Grandidierella palama HI
- Gymnophora luteiventris GNR
- Gyraulus parvus Ash Gyro FL
- Gyrinophilus gulolineatus Berry cave salamander G1 TN
- Gyrinophilus palleucus Tennessee Cave Salamander G2G3 AL, GA, TN
- Gyrinophilus porphyriticus Spring Salamander G5 AL, GA, KY, OH, TN, VA, WV
- Gyrinophilus subterraneus West Virginia Spring Salamander G1 WV
- Hadenoecus barri Barr's Cave Cricket TN
- Hadenoecus cumberlandicus Cumberland Cave Cricket GNR KY
- Hadenoecus jonesi Limrock Blowing Cave Cricket GNR AL, TN
- Hadenoecus opilionoides TN
- Hadenoecus subterraneus Mammoth Cave Cricket GNR KY, TN
- Haideoporus texanus Edwards Aquifer Diving Beetle G1G2 TX
- Halocaridina palahemo G1 HI
- Halocaridina rubra G3 HI
- Hamohalacarus subterraneus Donaldson's Cave Water Mite G1 IN
- Haplophthalmus danicus Spurred Ridgeback IL, IN, KY, NM, TN, VA
- Haplotaxis brinkhursti G1 WV
- Haplotaxis gordioides Haplotaxid Worm GNR WV
- Haplotrema concavum Gray-Foot Lancetooth G5 AL, FL, TN
- Harpalus pennsylvanicus GA
- Hawaiia minuscula Minute Gem G5 GA, IL, MO, TN
- Hawaiioscia micropthalma G1G2 HI
- Hawaiioscia paeninsulae G1G2 HI
- Hawaiioscia parvituberculata G1G2 HI
- Hawaiioscia rotundata G1G2 HI
- Hawinella lava G2G3 HI
- Heleomyza brachypterna AR
- Heleomyza serrata GNR IN, WI
- Helicina orbiculata AL, TN
- Helicodiscus barri Raccoon coil G3G4 AL, GA, TN
- Helicodiscus fimbriatus Fringed Coil G4 AL
- Helicodiscus hadenoecus Cricket Coil AL, KY, TN
- Helicodiscus inermis AL
- Helicodiscus multidens Twilight Coil G3 TN
- Helicodiscus notius Tight Coil G5 AL, GA, IL, KY, MO, TN
- Helicodiscus notius specus Hollow Coil G2 AL, GA, IL, KY, MO, TN
- Helicodiscus parallelus Compound Coil G5 GA, TN
- Helicodiscus punctatellus KY
- Helicodiscus shimeki Temperate Coil G5
- Helius flavipes GNR
- Helodrilus foetidus KY
- Helodrilus tenuis KY
- Hemidactylium scutatum Four-Toed Salamander G5 OH
- Heminothrus targionii GNR
- Hemiscolopendra marginata Eastern Bark Centipede GNR IN
- Hemisotoma thermophila GNR IL
- Hemitremia flammea Flame Chub G3 AL
- Hentziectypus globosus Fingered Cobweaver GNR AL
- Hesperochernes bradybaughi GNR AZ
- Hesperochernes holsingeri Holsinger's Cave Pseudoscorpion G1 IN
- Hesperochernes mirabilis Southeastern Cave Pseudoscorpion G5 AL, GA, IL, IN, KY, OH, TN, VA
- Hesperochernes occidentalis Guano Pseudoscorpion G5 AR, MO, OK, TX
- Hesperonemastoma inops G1G2 KY
- Hesperonemastoma pallidimaculosum G3 AL
- Hesperonemastoma smilax GNR WV
- Heteraphorura subtenuis GNR IL
- Heterelmis comalensis Comal Springs Riffle Beetle G1 TX
- Heteromurus nitidus IA
- Hexabathynella hessleri CA
- Hexabathynella muliebris CA
- Hexabathynella otayana CA
- Hexabathynella virginiae VA
- Hibana gracilis Garden Ghost Spider GNR AL
- Hickmania troglodytes Tasmanian Cave Spider
- Hirundo rustica Barn Swallow G5 AR, TN
- Hobbsinella edwardensis GNR TX
- Hobbsinella gunnisonensis CO
- Hogna frondicola Forest Wolf Spider G5
- Holsingeria unthanksensis Thankless ghostsnail G2 VA, WV
- Holsingerius samacos G1G2 TX
- Homaeotarsus bicolor GNR IL
- Homaeotarsus carolinus GNR AL
- Homidia socia Three-Lined Springtail IL
- Horologion hubbardi GNR VA
- Horologion speokites Arbuckle Cave Beetle GH WV
- Horreolanus orphanus IL, OH
- Howaia mogera Kasholenspin HI
- Hubbardia shoshonensis Shoshone Cave Whipscorpion G1 CA
- Hyalella azteca Mexican Freshwater Shrimp G5 FL
- Hyalella cretae GNR NV
- Hygrotus sayi Say's Diving Beetle G5
- Hylarana grandocula Big-Eyed Frog
- Hypena scabra Green Cloverworm G5 IL, IN, VA
- Hypentelium nigricans Northern Hog Sucker G5 AL
- Hypoaspis angusta IL
- Hypochilus bonneti GNR CO, NM
- Hypochilus coylei G3 NC
- Hypochilus gertschi G3 VA
- Hypochilus pococki Pocock's Lampshade-Web Spider G4 NC, TN
- Hypochilus thorelli Thorell's Lampshade-Web Spider G4 AL, GA, TN, VA
- Hypogastrura antra KY, TN
- Hypogastrura assimilis Mark-Tornspringhale GNR AL, IL, TN
- Hypogastrura matura GNR IL, MO
- Hypogastrura notha IL
- Hypogastrura purpurescens Purpur-Tornspringhale GNR
- Hypogastrura sparta AL
- Hypogastrura tullbergi GNR AL
- Ictalurus punctatus Channel Catfish G5 AL, FL
- Ictidomys tridecemlineatus Thirteen-Lined Ground Squirrel G5
- Ictiobus bubalus Smallmouth Buffalo G5 AL
- Idagona jasperi UT
- Idagona lehmanensis NV
- Idagona westcotti Idaho Lave Tube Millipede G1G2 ID
- Illacme tobini CA
- Inflectarius inflectus Shagreen G5 AL, FL, IL, KY, MO, TN
- Inflectarius rugeli Deep-Tooth Shagreen G5 AL, GA, KY, TN
- Iolania frankanstonei HI
- Islandiana cavealis Cave Sheet-web Spider GNR IN
- Islandiana flaveola Unequal Whiskered Money Spider G5 IL
- Islandiana lewisi cave sheet-web spider G1 IN
- Islandiana muma G1G2 AL, IL, VA
- Islandiana princeps Eastern Whiskered Money Spider GNR IL
- Islandiana speophila Cavern Sheet-web Spider G1 WV
- Islandiana unicornis G2G3 IL, OK, TX
- Isotoma andrei IL
- Isotoma gelida IL
- Isotoma tariva TN
- Isotoma trispinata IA, IL, MN
- Isotoma viridis Engspringhale GNR IA, MO
- Isotomiella minor Springtail GNR IA, IL, TN
- Ixodes conepati NM, TX
- Ixodes cookei American Castor Bean Tick GA, KY
- Ixodes scapularis Black Legged Tick GNR OK
- Ixodes woodi GNR TN
- Jalysus wickhami Spined Stilt Bug GNR KY
- Kenkia glandulosa Pink Cave Flatworm G2G3 IA, MO
- Kenkia lewisi Lewis' cave planarian G1 IL, MO
- Kenkia rhynchida Malheur Cave Flatworm G1G2 OR
- Kleptochthonius affinis G1G2 TN
- Kleptochthonius anophthalmus G1 VA
- Kleptochthonius attenuatus G1 KY
- Kleptochthonius barri G1G2 TN
- Kleptochthonius binoculatus G1G2 VA
- Kleptochthonius cerberus G1 KY
- Kleptochthonius charon G1G2 TN
- Kleptochthonius daemonius G1G2 TN
- Kleptochthonius erebicus G1 KY
- Kleptochthonius gertschi Gertsch's Cave Pseudoscorpion G1 VA
- Kleptochthonius griseomanus Gray-handed Cave Pseudoscorpion G2 IN
- Kleptochthonius hageni G1G2 KY
- Kleptochthonius henroti Greenbrier Valley Cave Pseudoscorpion G2 WV
- Kleptochthonius hetricki Organ Cave Pseudoscorpion G1 WV
- Kleptochthonius hubrichti G1G2 KY
- Kleptochthonius infernalis G1 TN
- Kleptochthonius krekeleri G2G4 KY
- Kleptochthonius lewisorum Lewis Cave Pseudoscorpion G1 IN
- Kleptochthonius lutzi Lutz's Cave Pseudoscorpion G1 VA
- Kleptochthonius magnus G1 GA, TN
- Kleptochthonius microphthalmus G1G2 KY
- Kleptochthonius multispinosus AL
- Kleptochthonius myopius G1 TN
- Kleptochthonius orpheus Orpheus Cave Pseudoscorpion G1 WV
- Kleptochthonius packardi Packard's Cave Pseudoscorpion G2 IN, KY
- Kleptochthonius pluto G1 TN
- Kleptochthonius proserpinae Proserpina Cave Pseudoscorpion G1 WV
- Kleptochthonius proximosetus G1 VA
- Kleptochthonius regulus G1G2 VA
- Kleptochthonius rex G1 TN
- Kleptochthonius similis G1 VA
- Kleptochthonius stygius G1 TN
- Kleptochthonius tantalus G1 TN
- Komarekiona eatoni Kentucky Earthworm GNR IL
- Labidostomma neotropica TN
- Laccophilus maculosus Dingy Diver G5
- Lacrimacandona wisei GNR TX
- Lacunicambarus diogenes Devil Crawfish G5 IL, KY
- Ladislavella elodes Marsh Pondsnail
- Laelaps cavernicola KY
- Lampetra aepyptera Least Brook Lamprey G5 AL, KY
- Lampropeltis holbrooki Speckled Kingsnake G5 AR
- Larca aalbui Aalbu's Cave Pseudoscorpion G1 CA
- Larca cavicola Grand Canyon Cave Pseudoscorpion G1G2 AZ
- Larca guadalupensis Guadalupe Cave Pseudoscorpion G1G2 TX
- Larca laceyi Lacey's Cave Pseudoscorpion G1 CA
- Larca welbourni G1G2 AZ
- Lascoria ambigualis Ambiguous Moth G5 AL
- Lasionycteris noctivagans Black Bat G4 AR
- Lasiurus borealis Eastern Red Bat G3 AR, GA, KY, TN
- Lasiurus cinereus AR, KY, TN
- Lasiurus seminolus Seminole Bat G5
- Latrodectus variolus Northern Black Widow GNR TN
- Lebia ornata Ornate Harp Ground Beetle G5 AL
- Leia cuneola AL, GA
- Leiobunum aldrichi Aldrich's Harvestman GNR AL
- Leiobunum calcar GNR TN
- Leiobunum longipes KY
- Leiobunum politum GNR
- Leiobunum vittatum Eastern Harvestman
- Lepidocyrtus atropurpureus KY
- Lepidocyrtus helenae G3 TN
- Lepidocyrtus paradoxus GNR
- Lepidocyrtus usitatus
- Lepomis auritus Redbreast Sunfish G5 AL
- Lepomis cyanellus Green Sunfish G5 AL, AR, IL, KY
- Lepomis gulosus Warmouth G5 FL
- Lepomis humilis Orangespotted Sunfish G5 AL
- Lepomis macrochirus Bluegill G5 AL, FL, KY
- Lepomis megalotis Mojarra De Cuatro Cienegas GNR KY
- Lepomis microlophus Redear Sunfish G5 AL
- Lepthyphantes leprosus Household Fine Sheetweaver GNR IL
- Leptocera atra NM
- Leptocera caenosa GNR GA
- Leptopeza compta GNR
- Leptotrombidium myotis GA
- Lepus americanus Snowshoe Hare G5
- Lesteva cribratula AL
- Lesteva pallipes G5 AL, GA, IA, IL, IN, KY, TN
- Lestodiplosis grassator GNR
- Lestodiplosis satiata
- Lethemurus missus Missus Cave Springtail G4 CO, IL, IN, KY, MO, Mexico, TN
- Leucauge venusta Orchard Orbweaver GNR AL, IL, KY
- Leucohya heteropoda
- Leucohya texana G1G2 TX
- Leydigia leydigi Gewone Breedstaartwatervlo FL
- Liagoceradocus lonomaka G1G2 HI
- Liancalus genualis GNR GA, IN
- Ligidium elrodii G4 AL, AR, GA, IL, KY, TN, VA, WV
- Ligidium kofoidi G1G2 CA
- Limomyza cavernicola CO
- Limonia annulata Syyssienikiekko
- Limonia badia GNR
- Limonia indigena GNR
- Limonia maculicosta GNR
- Limonia stulta AR
- Linopodes mammouthia KS, KY
- Liocranoides archeri Archer's Two-clawed Cave Spider G2 AL, TN
- Liocranoides coylei TN, VA
- Liocranoides tennesseensis G1 TN
- Liocranoides unicolor GU AL, GA, KY, TN
- Liposcelis decolor Book Louse GA
- Liposcelis divinatoria KY
- Lirceolus bisetus G1G2 TX
- Lirceolus cocytus GNR TX
- Lirceolus hardeni G2G3 TX
- Lirceolus nidulus GNR Mexico, TX
- Lirceolus pilus G2G3 TX
- Lirceolus smithii Texas Troglobitic Water Slater G1G2 TX
- Lirceus bicuspidatus G3 AR
- Lirceus bidentatus G1 AR
- Lirceus bisetus VA
- Lirceus culveri Rye Cove Cave Isopod G1 VA
- Lirceus fontinalis Lower Ohio Waterslater GNR GA, IL, KY, TN
- Lirceus garmani GNR KS, OK
- Lirceus holsingeri VA
- Lirceus hoppinae Blunt-Toothed Springslater GNR MO, OK
- Lirceus littonensis VA
- Lirceus orndorffi VA
- Lirceus slayorum Flat Waterslaters MO
- Lirceus usdagalun Lee County Cave Isopod G1 VA
- Lirceus zigleri Flat Waterslaters GNR VA
- Lissocreagris eurydice G1 AL
- Lissocreagris nickajackensis G1G2 AL, TN
- Lissocreagris persephone G1 AL
- Lissocreagris pluto G1 AL
- Lissocreagris subatlantica G3 AL, GA
- Lissocreagris valentinei Valentine's Cave Pseudoscorpion G1 VA
- Litargus balteatus Stored Grain Hairy Fungus Beetle GNR IA
- Lithasia obovata Shawnee Rocksnail G4 KY
- Lithobates catesbeianus American Bullfrog AL, AR, FL, GA, IL, IN, KY, TN
- Lithobates clamitans Green Frog AL, AR, FL, GA, IN, KY, OK, TN
- Lithobates grylio FL
- Lithobates heckscheri
- Lithobates palustris Pickerel Frog G5 AL, AR, CT, GA, IL, KY, OK, TN
- Lithobates sphenocephalus Southern Leopard Frog G5 AR, FL, GA, KY, TN
- Lithobates sylvaticus AR, NY, TN, VA
- Lithobius atkinsoni AL, FL, GA, TN
- Litocampa cookei Cooke's Cave Dipluran G5 AL, GA, KY, TN, VA
- Litocampa fieldingae Fielding's Cave Dipluran G2G3 VA, WV
- Litocampa henroti G1G2 AL
- Litocampa hoffmani G3 VA
- Litocampa jonesi G2G3 KY, TN
- Litocampa pucketti Puckett's Cave Dipluran G1G2 VA
- Litocampa valentinei G5 AL, TN
- Lobosculum pustuloides Tiny Liptooth G4 AL
- Lontra canadensis Common Otter G5 OK
- Lophomus skamania WA
- Loxosceles panama Violin Spiders
- Lucilla inermis Oldfield Coil AL, GA, TN
- Lucilla singleyana Singley's Subterranean Discus Snail G5 IL, TN
- Lumbricus rubellus Blood Worm GNR GA, IL, NC, VA
- Lumbricus terrestris Nightcrawler GNR IL
- Lustrochernes minor
- Luxilus chrysocephalus Striped Shiner G5 AL
- Lycosa howarthi G1G2 HI
- Lymantes nadineae GNR TX
- Lynx rufus Bobcat G5 AR, KY, TN
- Lyogyrus retromargo Indented Duskysnail GU FL
- Lythrurus fasciolaris Scarlet Shiner G5 KY
- Macrobrachium carcinus Bigclaw River Shrimp G5 FL
- Macrocera hirsuta IN
- Macrocera nobilis GNR AR, IL, KY, OK, TN
- Macrocheles penicilliger TN
- Macrocheles robustulus Mite TN
- Macrocheles stygius G1G2 KY
- Macrocheles troglodytes G1G2 KY
- Macrocyclops albidus White Copepod FL, GA, IL, IN, KY, TN
- Macrocyclops fuscus Giant Copepod IN, KY
- Macromastus umpqua G1G2 OR
- Maevia inclemens Dimorphic Jumper GNR GA
- Malaconothrus monodactylus IA
- Mangora placida Tuftlegged Orbweaver GNR AL
- Manota obscura IN
- Margarinotus egregius G5 GA
- Marmota monax Groundhog G5 IN
- Marpissa lineata Four-Lined Slender Jumping Spider GNR KY
- Marstonia comalensis Comal Marstonia G2 TX
- Marstonia ogmorhaphe Royal Marstonia G1 TN
- Martes americana American Marten G5 KY
- Mastigoproctus giganteus Giant Vinegaroon GNR FL
- Maymena ambita GNR AL, GA, IL, TN
- Mecyclothorax aa HI
- Mecynogea lemniscata Basilica Orbweaver GNR AL
- Megacyclops donnaldsoni Donaldson's Cave Copepod G3G4 GA, IN, KY, TN
- Megacyclops latipes IN, TN
- Megacyclops viridis Cyclopoid Copepod IN
- Megalothorax minimus IA, IL
- Megalothorax tristani IL
- Megapallifera mutabilis Changeable Mantleslug G5 KY
- Megascops asio Eastern Screech Owl G5 AL, OK
- Megaselia breviterga GA
- Megaselia cavernicola GNR AL, AR, GA, IA, IL, KY, TN
- Megaselia nigriceps GNR IN
- Megaselia rufipes Hump-Backed Fly GNR IN, KY, NM
- Megaselia spelunciphila GA
- Melanoides tuberculata FL
- Melanolestes picipes Black Corsair GNR IL
- Mephitis mephitis Striped Skunk G5 AR, KY, OK
- Mermessus antraeus GNR IL, NM, TX
- Mermessus denticulatus Amerikaanse Kasdwergspin GNR AL, IL, NM
- Mermessus indicabilis GNR IL
- Mermessus maculatus Sheet-Web Spiders GNR AL, GA, IL, MO, TN
- Mermessus tridentatus Spider GNR AL, IL, TN
- Meropelopia flavifrons
- Mesaphorura iowensis GNR GA, IA
- Mesaphorura krausbaueri GA
- Mesaphorura pacifica GNR IA
- Mesaphorura silvicola IL
- Mesocyclops edax IL, IN, KY
- Mesodon clausus Yellow Globelet G5 IL
- Mesodon thyroidus White-Lip Globe G5 FL, TN
- Mesodon zaletus Toothed Globe G5 AL, FL, KY
- Mesomphix andrewsae Mountain Button G3 TN
- Mesomphix anurus Frog Button G4 AL
- Mesomphix capnodes Dusky Button G5 AL
- Mesomphix cupreus Copper Button KY, TN
- Mesomphix perlaevis Smooth Button G4 KY
- Mesomphix pilsbryi Striate Button G4 AL
- Meta ovalis Cave Orb Weaver G5 AL, AR, GA, IA, IL, IN, KY, MO, OK, TN, VA
- Metajapyx subterraneus KY
- Metalimnobia cinctipes GNR
- Metaltella simoni Hacklemesh Weaver GNR GA
- Metisotoma grandiceps IA
- Mexichthonius exoticus G1G2 TN
- Mexistenasellus coahuila Coahuila Groundwater Isopod G2G3 Mexico, TX
- Mexistenasellus floridensis Florida Cave Isopod G1 FL
- Mexiweckelia hardeni G2G3 TX
- Microbisium parvulum GNR IL, KY, TN
- Microcreagris grandis Great Basin Cave Pseudoscorpion G1G2 NV
- Microcyclops rubellus IL, IN, KY, TN
- Microcylloepus pusillus GNR TX
- Micropogonias undulatus Croaker G5
- Micropterus dolomieu Smallmouth Bass GNR TN
- Micropterus punctulatus Spotted Bass G5 KY
- Micropterus salmoides American Black Bass GNR AL, FL
- Microtus ochrogaster Prairie Vole G5 KY
- Microtus pennsylvanicus Meadow Vole G5 KY
- Microtus pinetorum Pine Vole G5 AR, KY
- Microtus xanthognathus Taiga Vole G5
- Microvelia americana GNR GA, IL
- Miktoniscus barri Barr's Terrestrial Cave Isopod G2G4 IN, KY, TN
- Miktoniscus linearis AL
- Miktoniscus medcofi Small Alabama Sowbug GNR AL, FL, IL, NC, TN, VA, WV
- Miktoniscus morganensis AL
- Miktoniscus oklahomensis Racovitza's Cave Isopod G1G2 OK
- Miktoniscus racovitzai Racovitza's Terrestrial Cave Isopod G3G4 KY, OK, VA
- Mimetus notius Reticulated Pirate Spider GNR
- Mimetus puritanus Common Pirate Spider GNR AL
- Minicreagris pumila GNR AL, GA
- Mixojapyx reddelli G3G4 TX
- Mochlonyx cinctipes GNR
- Molothrus ater Brown-Headed Cowbird G5 IL
- Monopis crocicapitella Bird Nest Moth GNR AL, TN
- Monopsyllus wagneri IA
- Montanabathynella pecosensis TX
- Montanabathynella salish GNR MT
- Moraria cristata IN
- Mormoops megalophylla Ghost-Faced Bat G5 TX
- Morone saxatilis Maryland Bass Hybrid G3 FL
- Moxostoma erythrurum Golden Redhorse G5 KY
- Mundochthonius cavernicola G1G2 IL, MO
- Mundochthonius holsingeri G1 VA
- Mus musculus House Mouse G5 AL, KY
- Musca domestica Common House Fly GNR IN
- Muscina prolapsa Muscoid Fly GNR GA
- Musculium securis
- Mustela nivalis Least Weasel G5
- Mycetophila analis IN
- Mycetophila byersi GNR
- Mycetophila fisherae GNR
- Mycetophila ichneumonea GNR IN, TN
- Mycetophila ruficollis
- Mycetophila sordida GNR
- Mycomya nitida GNR
- Myodopsylla insignis Bat Flea GNR KY
- Myotis austroriparius Southeastern Myotis G4 AL, AR, FL, GA, IL, KY
- Myotis grisescens Gray Bat G3 AL, AR, FL, GA, IL, KS, KY, MO, MS, OK, TN, VA
- Myotis leibii Eastern Small-Footed Bat G4 AR, GA, KY, PA, TN, VA
- Myotis lucifugus Little Brown Bat G3 AL, AR, GA, IL, IN, KY, PA, TN, VA
- Myotis septentrionalis Northern Long-eared Bat G2 AL, AR, FL, GA, IL, KY, OK, PA, TN, VA
- Myotis sodalis Cluster Bat G2 AL, AR, FL, GA, IL, KY, PA, TN, VA
- Myotis velifer Cave Myotis G4
- Myrmecina americana American Mite-Eating Ant G5 GA
- Mystacides sepulchralis Black Dancer Caddisfly G5
- Nadabius ameles MO
- Nais variabilis Aquatic Oligochaete Worm GNR WV
- Namiotkocypria haysensis TX
- Nampabius mycophor AL
- Nampabius turbator G1 VA
- Nannopetalum fontis AL
- Nannopetalum vespertilo NC
- Narceus americanus American Giant Millipede G5 AL, AR, TN
- Narceus annularis G5 TN
- Neanura hawaiiensis G1G2 HI
- Neanura muscorum Moss Springtail GNR IA
- Neanura persimilis GNR IL
- Neanura pseudoquadrioculata IL
- Neaphaenops tellkampfi G3G4 IN, KY
- Necrophilus pettitii GNR AL, TN
- Neelides minutus GNR GA, IA, IL
- Nelima elegans KY, TN
- Nelima paessleri Aggregating Harvestman GNR
- Nelsonites jonesi G2G3 KY
- Nelsonites walteri G3 TN
- Nemadus hornii AL, GA, TN
- Nemoura trispinosa IL
- Neoallochernes incertus G1G2 NM
- Neoallochernes stercoreus G4 TX
- Neobisnius paederoides GNR IL
- Neochthonius imperialis Empire Cave Pseudoscorpion G1 CA
- Neochthonius troglodytes G2G3 CA
- Neoechinorhynchus cylindratus KY
- Neogale vison American Mink G5 GA, IN
- Neohelix albolabris Eastern Whitelip G5
- Neolithobius voracior GA
- Neoporus clypealis GNR FL
- Neoscona domiciliorum Red-Femured Spotted Orbweaver GNR
- Neospintharus trigonum Horned Parasitic Cobweaver GNR AL, IN
- Neotoma floridana Eastern Woodrat G5 AL, AR, FL, GA, OK
- Neotoma magister Allegheny Woodrat G3 AL, IN, KY, TN, VA
- Nepalomyia sombrea GA
- Neriene radiata Filmy Dome Spider G5 GA, IL, IN, KY
- Nerodia erythrogaster Plain-Bellied Water Snake G5
- Nerodia fasciata Southern Water Snake G5 FL
- Nerodia sipedon Common Watersnake G5 GA, TN
- Nesidiolestes ana Ana Wingless Thread Bug G1G2 HI
- Nesticus barri Barr's Cave Spider G3 AL, TN
- Nesticus barrowsi G1G2 TN
- Nesticus brimleyi G1G2 NC
- Nesticus carolinensis Linville Caverns Spider G2 NC
- Nesticus carteri Carter's Cave Spider GNR IN, KY, TN, VA, WV
- Nesticus cressleri GNR GA
- Nesticus dilutus Grassy Creek Cave Spider G1 TN
- Nesticus furtivus Racoon Mountain Caverns Cave Spider G1 TN
- Nesticus georgia Georgia Cave Spider G1G2 GA
- Nesticus gertschi G1 TN
- Nesticus holsingeri Holsinger's Cave Spider G3G4 VA
- Nesticus jonesi Cave Spring Cave Spider G1 AL
- Nesticus lula GNR GA
- Nesticus mimus G3 VA
- Nesticus paynei G3G4 TN, VA
- Nesticus pecki Monteagle Cave Spider GNR TN
- Nesticus potterius G1G2 CA
- Nesticus reclusus Lost Nantahala Cave Spider G3 NC
- Nesticus sodanus CA
- Nesticus stupkai TN
- Nesticus stygius G1G2 TN
- Nesticus tennesseensis Tennessee Cave Spider G3G4 TN, VA, WV
- Neuratelia sayi IN
- Nevadesmus hubbsi GNR NV
- Nevadesmus ophimontis NV
- Nevadesmus superstitiona AZ
- Niptus arcanus CA
- Nitidotachinus scrutator GNR IN
- Nitocrellopsis texana GNR TX
- Nopoiulus kochii Haakwang G5 KY, TN
- Notemigonus crysoleucas Golden Shiner G5 AL
- Notiobia terminata G5 AL
- Notophthalmus viridescens Eastern Newt G5 AL, GA, KY, TN
- Notropis atherinoides Emerald Shiner G5 KY
- Novobisium carolinense GA
- Novobisium ingratum GNR AL
- Nycteridopsylla chapini KY
- Nycticeius humeralis Evening Bat G5 AL, AR, KY
- Nyctinomops femorosaccus Pocketed Free-Tailed Bat G5
- Oaphantes prometheus CA
- Occasjapyx kofoidi CA
- Ochrotrichia spinosa G5 AR
- Ocrepeira ectypa GNR AL
- Octolasion lacteum White Worm TN, WV
- Octolasion tyrtaeum Woodland White Worm GNR AL, GA, IL, NC, TN, VA
- Odiellus pictus Painted Harvestman GNR
- Odocoileus virginianus White-Tailed Deer G5 AL, FL, KY
- Odontotaenius disjunctus Patent Leather Beetle GNR IL
- Oecothea fenestralis GNR IN, KY, TN
- Oecothea specus Small Cave Sun Fly AL, AR, GA, IA, IL, IN, KY, TN, VA, WI
- Oedipodrilus macbaini TN
- Oliarus gagneri G1G2 HI
- Oliarus kalaupapae G1G2 HI
- Oliarus lorettae G1G2 HI
- Oliarus makaiki G1G2 HI
- Oliarus polyphemus G1G2 HI
- Oliarus priola G1G2 HI
- Oliarus waikau G1G2 HI
- Omalium rivulare Ocillate Rove Beetle GNR TN
- Omorgus alatus
- Omorgus amictus
- Omorgus batesi
- Omorgus brucki
- Omorgus carinatus
- Omorgus costatus
- Omorgus fuliginosus
- Omorgus lindemannae
- Omorgus punctatus
- Omorgus rubricans
- Omorgus suberosus Hide Beetle GNR
- Oncopodura cruciata G1G2 MT
- Oncopodura fenestra G2G3 TX
- Oncopodura hoffi Hoff's Cave Springtail G1G2 MO
- Oncopodura hubbardi G2 VA
- Oncopodura iowae G3G4 IA, IL, MO
- Oncopodura mala Malheur Cave Springtail G2 CA, OR
- Oncopodura prietoi G1G2 Mexico, NM
- Oncopodura subhoffi G3 CO
- Oniscus asellus Common Shiny Woodlouse GNR
- Onychiurus eous IA
- Onychiurus gelus G2G3 IA, WA, WI
- Onychiurus janus G2G3 AL, VA, WV
- Onychiurus obesus G3G4 IA, MN, MO, WI
- Onychiurus opus IA
- Onychiurus oregonensis G1G2 OR
- Onychiurus paro G1 AL
- Onychiurus parvicornis IA
- Onychiurus pipistrellae IL
- Onychiurus pseudoarmatus TN
- Onychiurus pseudofimetarius TN
- Onychiurus reluctus GNR IA, IL, Mexico, TN, WV
- Onychiurus similis IA
- Opheodrys aestivus Greensnake G5 AR
- Ophisaurus ventralis Eastern Glass Lizard G5 FL
- Ophyiulus pilosus Furry Snake Millipede G5 AL, KY, TN
- Opiona catorycha OR
- Opiona graeningi CA
- Oppia nitens GNR IA
- Orchesella hexfasciata GNR IA
- Orchopeas leucopus Pulga GNR
- Orchopeas sexdentatus KY, VA
- Orconectes australis Southern Cave Crayfish G5 AL, KY, TN
- Orconectes barri Cumberland Plateau Cave Crayfish G2 KY, TN
- Orconectes incomptus Tennessee Cave Crayfish G2 TN
- Orconectes inermis Ghost Crayfish G5 IN, KY, TN
- Orconectes packardi Appalachian Cave Crayfish G2 KY, TN
- Orconectes pellucidus Mammoth Cave Crayfish G4 AL, IN, KY, TN
- Oregonasellus elliotti OR
- Oreonetides beattyi Beatty's Sheetweb Cave Spider GNR IN, MD, PA, TN, VA
- Oreonetides vaginatus Undergrowth Sheet-Web Weaver G5
- Oreophantes recurvatus G5
- Orfelia elegans
- Origanates rostratus GNR AL, TN
- Ormosia affinis Cranefly GNR
- Ormosia meigenii GNR IN
- Oropsylla arctomys GNR IA
- Orthocyclops modestus IL, IN, TN
- Orus rubens NM
- Oryzaephilus surinamensis Sawtoothed Grain Beetle GNR IA
- Osphranticum labronectum KY, TN
- Osteopilus septentrionalis Cuban Treefrog G5 FL
- Otiorhynchus ovatus Strawberry Root Weevil GNR
- Otostigmus cooperi
- Oxidus gracilis Greenhouse Millipede G5 AL, FL, GA, KY, OK, PA, TN, VA
- Oxyopes salticus Lynx Spider GNR AL
- Oxytelus exiguus IL
- Ozarkia alabama GNR AL
- Ozarkia arkansa AR
- Ozarkia blanda GNR AL
- Ozarkia georgia GNR GA
- Ozarkia novaegalleciae NM
- Ozarkia serena G1G2 AL
- Pachydesmus crassicutis G5 AL
- Pacificabathynella kalispellensis GNR MT
- Pacificabathynella ruthae GNR MT
- Pacificabathynella sequoiae GNR CA, WA
- Pacificabathynella stanfordi GNR MT
- Pacificabathynella yupik AK
- Packardesmus cavicola UT
- Paeromopus cavicolens CA
- Paitobius arienus AL
- Paitobius carolinae AL
- Paitobius juventus AL
- Palaemon kadiakensis Mississippi Grass Shrimp G5 FL
- Palaemon paludosus Eastern Grass Shrimp G5 FL
- Palaemonetes antrorum Balcones Cave Shrimp G2G3 TX
- Palaemonetes cummingi Squirrel Chimney Cave Shrimp GH FL
- Palaemonias alabamae Alabama Cave Shrimp G1 AL
- Palaemonias ganteri Mammoth Cave Shrimp G1 KY
- Paleonura petebellingeri G1 VA
- Pangaeus docilis
- Panstrongylus geniculatus Barbeiro
- Pantelozetes cavaticus TN
- Pantherophis guttatus Corn Snake G5
- Pantherophis obsoletus Pilot Black Snake G5 AR, KY
- Pantherophis quadrivittatus Yellow Rat Snake (Quadrivittata) FL
- Pantherophis spiloides Gray Rat Snake G4 AL, FL
- Parabogidiella americana G2G3 TX
- Paracyclops canadensis IN
- Paracyclops chiltoni IN, KY
- Paracyclops poppei Copepod GNR KY
- Paragnetina media Embossed Stone G4
- Paraholsingerius smaragdinus GNR TX
- Parametriocnemus lundbeckii GNR
- Paramexiweckelia ruffoi Ruffo's Cave Amphipod G1G2 TX
- Paramoera lokowai G1G2 HI
- Paramoera paakai G1G2 HI
- Paramoera rua G1G2 HI
- Paraplanaria occulta VA
- Pararhynchelmis texana TX
- Parascalops breweri Brewer's Mole G5 KY
- Parasitus fimetorum TN
- Parasitus remberti IA
- Parasteatoda tepidariorum Common House Spider GNR AL, AR, GA, IL, KY, TN, VA
- Paratachys aaa HI
- Paratheridula perniciosa Cobweb Spiders
- Paravachonium bolivari
- Paravitrea capsella KY, TN
- Paravitrea multidentata Dentate Supercoil G5 TN
- Parazaona cavicola
- Paria sexnotata Juniper Paria GNR AR
- Parisotoma notabilis GNR FL, IA, IL, MN, MO, TN, WI
- Parobisium charlotteae G1G2 OR
- Parobisium petilum CA
- Parobisium yosemite CA
- Parvidrilus strayeri G1G2 AL
- Patera appressa Flat Bladetooth G5 AL, GA, KY, TN, VA
- Patera laevior Smooth Bladetooth G4 KY, TN
- Patera perigrapta Engraved Bladetooth G5 AL, GA, TN
- Patera sargentiana Grand Bladetooth G2 AL
- Patrobus longicornis Long-Horned Patrobus Beetle G5 AL, IL, IN, KY, MO
- Pegoplata infirma GNR
- Pelegrina exigua GNR IL
- Pelegrina proterva Common White-Cheeked Jumping Spider G5 IL
- Penaeus setiferus Northern White Shrimp GNR FL
- Percina caprodes Common Logperch G5 AL, KY
- Percina nigrofasciata Blackbanded Darter G5
- Percymoorensis lateralis
- Perichaeta minima GA
- Pericoma scotiae TN
- Perimyotis subflavus Tricolored Bat G3 AL, AR, CT, FL, GA, IL, IN, KS, KY, MA, MO, MS, NC, NJ, NY, OH, OK, ON, PA, TN, TX, VA, WI, WV
- Periplaneta americana American Cockroach GNR
- Perissopalla flagellisetula AL
- Peromyscopsylla hesperomys GNR TN
- Peromyscus attwateri Attwater's Mouse G5 AR
- Peromyscus boylii Brush Deermouse G5 NM
- Peromyscus gossypinus Cotton Deermouse G5 FL
- Peromyscus leucopus White-Footed Deermouse G5 IN, KY, NM, TN
- Peromyscus maniculatus Deer Mouse G5 IL
- Perpolita binneyana Blue Glass
- Petrochelidon pyrrhonota American Cliff Swallow G5 OK
- Phagocata angusta G1 WV
- Phagocata bursaperforata AL
- Phagocata carolinensis G1G2 NC
- Phagocata gracilis Slender Spring Flatworm G5 IL, IN, KY, MO, OH, PA, VA
- Phagocata holleri Holler's Cave Flatworm G1G2 NC
- Phagocata morgani G4 AL, KY, MD, NC, NY, VA, VT, WV
- Phagocata notorchis TN
- Phagocata oregonensis Oregon Cave Flatworm G1G2 OR
- Phagocata procera G1G2 NC
- Phagocata pygmaea NC
- Phagocata spuria NC
- Phalangodes armata G3G4 IN, KY
- Phanetta subterranea Subterranean Sheetweb Spider G5 AL, AR, GA, IL, IN, KY, MO, NC, OH, TN, VA, WV
- Phaonia soccata GNR
- Phelister fulvulus
- Phelister luculentus Escarabajo Payaso
- Phenacomys intermedius Heather Vole G5
- Pheretima rodericensis
- Phidippus purpuratus Marbled Purple Jumper G5
- Philomycus carolinianus Carolina Mantleslug G5 FL
- Philomycus togatus Toga Mantleslug G5 IL, KY
- Philonthus cyanipennis Staph Beetle GA
- Philonthus lomatus G5 IN
- Phoberus capensis
- Phoberus pusillus
- Phoberus sulcatus Grooveneck Keratin Beetle
- Pholcus dade GA
- Pholcus jusahi VA
- Pholcus lanieri GA
- Pholcus phalangioides Cosmopolitan Cellar Spider GNR IL, KY, NM, TN
- Phoxinus erythrogaster KY
- Phreatoceras taylori Nymph trumpet G1G2 TX
- Phreatodrobia bulla TX
- Phreatodrobia conica Hueco Cavesnail G1 TX
- Phreatodrobia coronae G1G2 TX
- Phreatodrobia embossa TX
- Phreatodrobia imitata Mimic cavesnail G1 TX
- Phreatodrobia micra Flattened Cavesnail G2G3 AL, TX
- Phreatodrobia nugax Domed Cavesnail G1G2 TX
- Phreatodrobia plana Disc cavesnail G2 TX
- Phreatodrobia punctata High-hat cavesnail G2 TX
- Phreatodrobia rotunda Beaked cavesnail G1G2 TX
- Phreatodrobia spica Spiky Cavesnail GNR TX
- Phronia exigua GNR
- Phronia flavipes GNR
- Phronia incerta IN
- Physella acuta European Physa IL, MO
- Physella gyrina Tadpole Physa G5 GA
- Physella spelunca Cave Physa G1 WY
- Physocyclus enaulus NM
- Physocypria denticulata TX
- Physocypria globula TX
- Pimephales promelas Fathead Minnow (Rosy Reds) G5 KY
- Pimoa altioculata GNR
- Pinodytes pusio CA
- Pinodytes rothi OR
- Pirata alachuus GNR GA
- Pirata sedentarius GNR IL, TN
- Piratula insularis Lonely Wolf Spider G5 GA
- Pisaurina mira Nursery Web Spider G5 AL, IL
- Plathemis lydia Common Whitetail or Long-Tailed Skimmer G5 MO
- Platynus angustatus GNR KY
- Platynus cincticollis GNR IN
- Platynus parmarginatus GNR GA
- Platynus tenuicollis Slender Ground Beetle G5 AL, AR, IL, IN, KY, MO, TN, VA
- Plestiodon fasciatus Common Five-Lined Skink G5 AR, KY
- Plethodon albagula Western Slimy Salamander G5 AR, OK
- Plethodon angusticlavius Ozark Salamander G4 AR, OK
- Plethodon caddoensis Caddo Mountain Salamander G2
- Plethodon cinereus Eastern Red-Backed Salamander G5 IN, OH
- Plethodon dorsalis Northern Zigzag Salamander G5 IL, IN, KY, TN
- Plethodon glutinosus Northern Slimy Salamander G5 AL, GA, IL, IN, KY, OH, TN, VA
- Plethodon grobmani Southeastern Slimy Salamander G5 FL
- Plethodon petraeus Pigeon Mountain Salamander G2 GA
- Plethodon richmondi Ravine Salamander G5 KY, WV
- Plethodon serratus Southern Red-Backed Salamander G5 AR, GA
- Plethodon ventralis Southern Zigzag Salamander G4 AL, GA, TN
- Plethodon websteri Webster's Salamander G3 AL
- Plumatyla humerosa G2G3 CA
- Plutomurus californicus G2G3 CA, Mexico
- Plutomurus grahami G1 NM
- Pnyxia scabiei Potato Scab Gnat KY
- Poecilochirus carabi TN
- Poecilophysis extraneostella G2 VA, WV
- Poecilophysis pratensis Mite WV
- Poecilophysis weyerensis G3 IN, KY, TN, VA, WV
- Pogonognathellus bidentatus GNR AL, GA, IL, KY, TN, VA
- Pogonognathellus danieli VA
- Pogonognathellus dubius Ghost Silver Bullet Springtail GNR AL, GA, KY, TN
- Pogonognathellus flavescens AL, GA, IA, IL, IN, KY, MO, WI
- Pogonognathellus nigritus IL, TN
- Polycentropus barri G3 KY
- Polycentropus elarus G3 KY
- Polydesmus inconstans European Sculpted Millipede G4 IL, PA
- Polydrusus impressifrons Pale Green Weevil GNR
- Polygonia comma Eastern Comma G5 KY
- Polynoncus gemmingeri
- Pomatiopsis lapidaria Slender Walker G5 IL, TN
- Pomoxis nigromaculatus Black Crappie G5 FL
- Ponera pennsylvanica Common Porthole Ant G5 KY
- Porcellio laevis Smooth Slater TN
- Porcellio scaber Common Rough Woodlouse GNR IN
- Porcellio spinicornis Painted Woodlouse GNR
- Porrhomma cavernicola Appalachian Cave Spider G5 AL, AR, GA, IA, IL, IN, KY, MD, MO, NC, OK, ON, PA, TN, VA, WV
- Porrhomma egeria Kelderkleinoogje
- Porrhomma terrestre Terrestrial Wide-Eyed Sheetweaver GNR IL
- Potamocypris fulva GA
- Potamothrix bavaricus Aquatic Oligochaete Worm TX
- Pratherodesmus despaini CA
- Pratherodesmus ecclesia AZ
- Pratherodesmus voylesi AZ
- Prenolepis imparis American Winter Ant G5 AL
- Prietella phreatophila Mexican Blindcat GNR Mexico, TX
- Primicimex cavernis TX
- Prionochaeta opaca Small Carrion Beetle G5 AL, FL, GA, IL, IN, KY, MO, NC, TN
- Pristiloma subrupicola Southern Tightcoil
- Pristina leidyi Aquatic Oligochaete Worm GNR SC
- Procambarus acherontis Orlando Cave Crayfish G1 FL
- Procambarus alleni Everglades Crayfish G4 FL
- Procambarus attiguus Silver Glen Springs Cave Crayfish G1 FL
- Procambarus blandingii Santee Crayfish G4
- Procambarus clarkii Red Swamp Crayfish G5 TX
- Procambarus cuevachicae
- Procambarus delicatus Bigcheek Cave Crayfish G1 FL
- Procambarus erythrops Santa Fe Cave Crayfish G1 FL
- Procambarus fallax Slough Crayfish G5 FL
- Procambarus franzi Orange Lake Cave Crayfish G1 FL
- Procambarus horsti Big Blue Spring Cave Crayfish G1 FL
- Procambarus leitheuseri Coastal Lowland Cave Crayfish G1G2 FL
- Procambarus lucifugus Light-fleeing Cave Crayfish G1G2 FL
- Procambarus milleri Miami Cave Crayfish G1 FL
- Procambarus morrisi Putnum County Cave Crayfish G1 FL
- Procambarus orcinus Woodville Karst Cave Crayfish G1 FL
- Procambarus paeninsulanus Peninsula Crayfish G5 FL
- Procambarus pallidus Pallid Cave Crayfish G1G2 FL, GA
- Procambarus pilosimanus
- Procambarus spiculifer White Tubercled Crayfish G5 FL
- Procambarus toltecae Toltecae Crayfish
- Procambarus versutus Sly Crayfish G5 FL
- Procambarus villalobosi
- Procaris hawaiana G1 HI
- Proceratium micrommatum
- Procladius bellus GNR GA
- Procyon lotor Common Raccoon G5 AL, AR, FL, GA, IL, IN, KY, OK, TN, VA
- Progomphus obscurus Common Sanddragon G5 GA
- Progradungula carraiensis Carrai Cave Spider
- Proisotoma frisoni IA
- Proisotoma minuta Springtail GNR MN
- Proisotoma sepulcralis IL
- Proisotoma veca IA
- Proisotoma vesiculata IA
- Prosimulium mixtum Mixed-Up Black Fly G5
- Prosimulium saltus GA
- Prostoma graecense GA
- Proteocephalus poulsoni KY
- Protolimnesia ventriplacophora TX
- Psephenus herricki Herrick's Water Penny Beetle G5 KY
- Pseudachorutes aureofasciatus GNR IA, IL
- Pseudachorutes saxatilis GNR IL
- Pseudachorutes subcrassoides IA
- Pseudacris crucifer Spring Peeper G5 AL, AR, FL, GA, OK
- Pseudacris feriarum Southeastern Chorus Frog G5 AL, GA
- Pseudacris triseriata Striped Chorus Frog G5 IL
- Pseudanophthalmus abditus Concealed Cave Beetle G3 KY
- Pseudanophthalmus acherontis Echo Cave Beetle G1 TN
- Pseudanophthalmus alabamae Alabama Cave Beetle G2 AL
- Pseudanophthalmus alladini Alladin's Cave Beetle G3G4 AL
- Pseudanophthalmus assimilis West Wills Valley Cave Beetle G1G2 AL
- Pseudanophthalmus audax Bold Cave Beetle G1G2 KY
- Pseudanophthalmus avernus Avernus Cave Beetle G1 VA
- Pseudanophthalmus barberi G2G3 KY
- Pseudanophthalmus barri G1G2 IN
- Pseudanophthalmus beakleyi Beakley's Cave Beetle G3G4 KY, TN
- Pseudanophthalmus bendermani Benderman's Cave Beetle G1G2 TN
- Pseudanophthalmus caecus Clifton Cave Beetle G1 KY
- Pseudanophthalmus calcareus Limestone Cave Beetle G1 KY
- Pseudanophthalmus catherinae Catherine's Cave Beetle G1 TN
- Pseudanophthalmus catoryctos Lesser Adams Cave Beetle G1 KY
- Pseudanophthalmus cerberus G3G4 KY, TN
- Pseudanophthalmus chthonius G3 IN, KY
- Pseudanophthalmus ciliaris G3G4 KY, TN
- Pseudanophthalmus cnephosus Larue County Cave Beetle G1G2 KY
- Pseudanophthalmus colemanensis Coleman Cave Beetle G1 TN
- Pseudanophthalmus conditus Hidden Cave Beetle G1G2 KY
- Pseudanophthalmus cordicollis Little Kennedy Cave Beetle G1 VA
- Pseudanophthalmus cumberlandus G1G2 TN
- Pseudanophthalmus darlingtoni G3 KY
- Pseudanophthalmus deceptivus Deceptive Cave Beetle G1 VA
- Pseudanophthalmus delicatus Delicate Cave Beetle G3G4 TN, VA
- Pseudanophthalmus desertus G3 KY
- Pseudanophthalmus digitus G1G2 GA, TN
- Pseudanophthalmus distinguens G1G2 AL, VA
- Pseudanophthalmus egberti New River Valley Cave Beetle G1 VA
- Pseudanophthalmus elongatus G1G2 KY
- Pseudanophthalmus emersoni G1 IN
- Pseudanophthalmus englehardti Englehardt's Cave Beetle G1 TN
- Pseudanophthalmus eremita G1G2 IN, KY, OH
- Pseudanophthalmus exiguus G3G4 KY
- Pseudanophthalmus exoticus Exotic Cave Beetle G1 KY
- Pseudanophthalmus farrelli G1G2 TN
- Pseudanophthalmus fastigatus Tapered Cave Beetle G1 GA
- Pseudanophthalmus fluviatilis G3 AL
- Pseudanophthalmus fowlerae Fowler's Cave Beetle G1 TN
- Pseudanophthalmus frigidus Icebox Cave Beetle G1 KY
- Pseudanophthalmus fulleri G2G3 AL, GA, TN
- Pseudanophthalmus fuscus G4 WV
- Pseudanophthalmus georgiae Georgia Cave Beetle G1G2 GA
- Pseudanophthalmus globiceps G1 KY
- Pseudanophthalmus gracilis Clover Hollow Cave Beetle G1G2 VA
- Pseudanophthalmus grandis G4 WV
- Pseudanophthalmus hadenoecus Timber Ridge Cave Beetle G1 WV
- Pseudanophthalmus henroti GNR WV
- Pseudanophthalmus hesperus G1 TN
- Pseudanophthalmus higginbothami G2 WV
- Pseudanophthalmus hirsutus Cumberland Gap Cave Beetle G1G2 TN, VA
- Pseudanophthalmus hoffmani Hoffman's Cave Beetle G2G3 VA
- Pseudanophthalmus holsingeri Holsinger's Cave Beetle G1 VA
- Pseudanophthalmus horni Garman's Cave Beetle G3 KY
- Pseudanophthalmus hortulanus Garden Cave Beetle G1 VA
- Pseudanophthalmus hubbardi Hubbard's Cave Beetle G1 VA
- Pseudanophthalmus hubrichti Hubricht's Cave Beetle G1 VA
- Pseudanophthalmus humeralis G2 TN
- Pseudanophthalmus hypertrichosis G3 WV
- Pseudanophthalmus hypolithos G1 KY
- Pseudanophthalmus illinoisensis Illinois Cave Beetle G1 IL
- Pseudanophthalmus inexpectatus Surprising Cave Beetle G1G2 KY
- Pseudanophthalmus inquisitor Inquirer Cave Beetle G1 TN
- Pseudanophthalmus insularis Baker Station Cave Beetle G1 TN
- Pseudanophthalmus intermedius Intermediate Cave Beetle G2 TN
- Pseudanophthalmus intersectus Crossroads Cave Beetle G1G2 VA
- Pseudanophthalmus jonesi Grassy Cove Cave Beetle G1G2 AL, TN
- Pseudanophthalmus krameri Kramer's Cave Beetle G1 OH
- Pseudanophthalmus krekeleri Rich Mountain Cave Beetle GX WV
- Pseudanophthalmus lallemanti G1 WV
- Pseudanophthalmus leonae G1 IN
- Pseudanophthalmus limicola Maddens Cave Beetle G1G2 VA
- Pseudanophthalmus lodingi G1G2 AL
- Pseudanophthalmus loganensis G2G3 KY, TN
- Pseudanophthalmus longiceps Long-headed Cave Beetle G1G2 TN, VA
- Pseudanophthalmus macradyi Macrady's Cave Beetle G1G2 TN
- Pseudanophthalmus major Beaver Cave Beetle G1 KY
- Pseudanophthalmus menetriesi G3 KY
- Pseudanophthalmus meridionalis G2 AL
- Pseudanophthalmus montanus Dry Fork Valley Cave Beetle G1 WV
- Pseudanophthalmus nelsoni Nelson's Cave Beetle G2 VA
- Pseudanophthalmus nickajackensis Nickajack Cave Beetle G1 AL, TN
- Pseudanophthalmus nortoni Norton's Cave Beetle G1 TN
- Pseudanophthalmus occidentalis Western Cave Beetle G1G2 TN
- Pseudanophthalmus ohioensis Ohio Cave Beetle G1 OH
- Pseudanophthalmus orientalis Surprising Cave Beetle G2G3 KY
- Pseudanophthalmus orthosulcatus G1 WV
- Pseudanophthalmus packardi Packard's Cave Beetle G1G2 KY
- Pseudanophthalmus pallidus Pale Cave Beetle G1G2 TN
- Pseudanophthalmus paradoxus Ridetop Cave Beetle G1 TN
- Pseudanophthalmus parvicollis Hupps Hill Cave Beetle G1 VA
- Pseudanophthalmus parvus Tatum Cave Beetle GH KY
- Pseudanophthalmus paulus Nobletts Cave Beetle G1 TN
- Pseudanophthalmus paynei Payne's Cave Beetle G1 TN
- Pseudanophthalmus petrunkevitchi Petrunkevitch's Cave Beetle G1G2 VA
- Pseudanophthalmus pholeter Greater Adams Cave Beetle G1 KY
- Pseudanophthalmus pilosus G2G3 KY
- Pseudanophthalmus pontis Natural Bridge Cave Beetle G1 VA
- Pseudanophthalmus potamaca South Branch Valley Cave Beetle G3G4 VA, WV
- Pseudanophthalmus praetermissus Overlooked Cave Beetle G1 VA
- Pseudanophthalmus princeps G1G2 KY, TN
- Pseudanophthalmus productus G3G4 TN
- Pseudanophthalmus profundus G2 AL
- Pseudanophthalmus pubescens G3 KY
- Pseudanophthalmus punctatus Spotted Cave Beetle G2 VA
- Pseudanophthalmus pusillus Tiny Cave Beetle G1 TN
- Pseudanophthalmus pusio Ellet Valley Cave Beetle G2G3 VA
- Pseudanophthalmus puteanus Old Well Cave Beetle G1G2 KY
- Pseudanophthalmus quadratus Straley's Cave Beetle G1 VA
- Pseudanophthalmus rittmani G1G2 KY
- Pseudanophthalmus robustus Robust Cave Beetle G3G4 TN
- Pseudanophthalmus rogersae Roger's Cave Beetle G1 KY
- Pseudanophthalmus rotundatus Rotund Cave Beetle G2 TN, VA
- Pseudanophthalmus sanctipauli Saint Paul Cave Beetle G1G2 VA
- Pseudanophthalmus scholasticus Schoolhouse Cave Beetle G1 KY
- Pseudanophthalmus scutilis G1 TN
- Pseudanophthalmus seclusus Rye Cove Cave Beetle G2G3 VA
- Pseudanophthalmus senecae Seneca Cave Beetle G1 WV
- Pseudanophthalmus sequoyah Sequoyah Cave Beetle G1 AL
- Pseudanophthalmus sericus Silken Cave Beetle G1 VA
- Pseudanophthalmus shilohensis Shiloh Cave Beetle G2 IN
- Pseudanophthalmus sidus Meredith Cave Beetle G1 TN
- Pseudanophthalmus simplex Simple Cave Beetle G1G2 TN
- Pseudanophthalmus simulans Cub Run Cave Beetle G1 KY
- Pseudanophthalmus solivagus G1G2 KY
- Pseudanophthalmus steevesi Steeves' Cave Beetle G1G2 AL
- Pseudanophthalmus striatus G2G3 KY
- Pseudanophthalmus stricticollis Marengo Cave Beetle G4 IL, IN
- Pseudanophthalmus sylvaticus GNR WV
- Pseudanophthalmus templetoni Templeton's Cave Beetle G1 TN
- Pseudanophthalmus tenebrosus Stevens Creek Cave Beetle G1 KY
- Pseudanophthalmus tennesseensis G3 TN
- Pseudanophthalmus tenuis G4 IN
- Pseudanophthalmus thomasi Thomas' Cave Beetle G1G2 VA
- Pseudanophthalmus tiresias Indian Grave Point Cave Beetle G1 TN
- Pseudanophthalmus transfluvialis G1G2 KY
- Pseudanophthalmus troglodytes Louisville Cave Beetle G1 KY
- Pseudanophthalmus tullahoma Duck River Cave Beetle G1G2 TN
- Pseudanophthalmus umbratilis G2G3 KY
- Pseudanophthalmus unionis Union County Cave Beetle G1G2 TN
- Pseudanophthalmus valentinei Valentine's Cave Beetle G3G4 TN
- Pseudanophthalmus vanburenensis G1 TN
- Pseudanophthalmus ventus Blowing Cave Beetle G1 TN
- Pseudanophthalmus vicarius Vicariant Cave Beetle G2G3 VA
- Pseudanophthalmus virginicus Maiden Spring Cave Beetle G1 VA
- Pseudanophthalmus wallacei Wallace's Cave Beetle G1 TN
- Pseudanophthalmus youngi Young's Cave Beetle G3G4 IN
- Pseudemys peninsularis Peninsular Cooter G5 FL
- Pseudobaicalasellus bowmani Natural Bridge Cave Isopod G1 VA
- Pseudobaicalasellus henroti Henrot's Cave Isopod G2 VA
- Pseudobaicalasellus holsingeri Holsinger's Cave Isopod G5 MD, VA, WV
- Pseudobaicalasellus incurvus Incurved Cave Isopod G2G4 TN, VA
- Pseudobaicalasellus magniezi VA
- Pseudobaicalasellus mausi G2 MD, VA
- Pseudobaicalasellus vandeli Vandel's Cave Isopod G3G4 MD, VA
- Pseudocandona albicans GNR TX
- Pseudocandona jeanneli Jeannel's Cave Ostracod G3 IN, KY, TN
- Pseudocandona marengoensis Marengo Cave Ostracod G1G2 IN
- Pseudogarypus hypogeus G1G2 AZ
- Pseudogarypus orpheus Music Hall Cave Pseudoscorpion G1 CA
- Pseudogarypus speleus G1G2 CA
- Pseudoleria parvitarsus GNR NM
- Pseudopolydesmus erasus TN
- Pseudopolydesmus pinetorum GNR AL, AR, GA, IL
- Pseudopolydesmus serratus Common Pink Flat-Back G5 AL, IN, PA, TN
- Pseudosinella aera G4 IL, TN
- Pseudosinella alba GNR MN, TN
- Pseudosinella argentea GNR AL, AR, IL, KY, MO, TN
- Pseudosinella bona G2 VA
- Pseudosinella boneti KY, TN
- Pseudosinella certa Gandy Creek Cave Springtail G1 WV
- Pseudosinella christianseni Christiansen's Cave Springtail G5 AL, GA, KY, TN, VA
- Pseudosinella collina GNR AL, TN
- Pseudosinella dubia G3 AR, Mexico, OK
- Pseudosinella duodecimpunctata KY, MO, TN, VA
- Pseudosinella erehwon G2 VA
- Pseudosinella espana Espana Cave Springtail G3 MO, Mexico, TN
- Pseudosinella espanita G1 KY, TN
- Pseudosinella extra G1G2 VA
- Pseudosinella flatua G1G2 NC, VA
- Pseudosinella folsomi GNR AL, MO
- Pseudosinella fonsa Fountain Cave Springtail G3G4 IN, OH, TN
- Pseudosinella georgia GA
- Pseudosinella gisini G3G4 Mexico, NC, TN, VA, WV
- Pseudosinella gisini carolina NC
- Pseudosinella gisini virginia VA
- Pseudosinella granda G3 VA
- Pseudosinella hirsuta Hirsute Cave Springtail G5 AL, GA, KY, Mexico, TN, VA
- Pseudosinella josemarii GNR WV
- Pseudosinella meganporteri G2 WV
- Pseudosinella nata G1 AL, Mexico, TN
- Pseudosinella ops VA
- Pseudosinella orba G3G4 KY, Mexico, NC, TN, VA, WV
- Pseudosinella pecki Peck's Cave Springtail G2G3 AL, FL, GA, NC, TN
- Pseudosinella rolfsi GNR AL
- Pseudosinella sexoculata KY, NM
- Pseudosinella spinosa Spiny Cave Springtail G5 AL, GA, Mexico, TN
- Pseudosinella testa Shelled Cave Springtail G2G3 AR, Mexico, VA, WV
- Pseudosinella vespera G2 NC, VA
- Pseudosinella violenta GNR AL, IA, TX, WI
- Pseudosinella vita G1G2 Mexico, NM
- Pseudotremia acheron G1G2 TN
- Pseudotremia aeacus G1G2 GA
- Pseudotremia amphiorax G1G2 KY
- Pseudotremia armesi G2 WV
- Pseudotremia barri Barr's Cave Millipede G2 TN
- Pseudotremia blacki Black's Cave Milliped G1 IN
- Pseudotremia burnsorum Burn's Cave Milliped G1G2 IN
- Pseudotremia callae Call's Cave Milliped G1 TN
- Pseudotremia carterensis G2G3 IN, KY
- Pseudotremia cavernarum Ellett Valley Pseudotremia Millipede G2G3 IN, KY, TN, VA
- Pseudotremia cerberus Cerberus Cave Milliped G1 VA
- Pseudotremia cercops G1 TN
- Pseudotremia cocytus TN
- Pseudotremia conservata TNC Cave Milliped G1G2 IN
- Pseudotremia contorta Twisted-gonopod Cave Milliped G1 VA
- Pseudotremia cookorum Cook's Cave Milliped G1G2 IN
- Pseudotremia culveri Culver's Cave Milliped G1 VA
- Pseudotremia deprehendor G1 TN, VA
- Pseudotremia douglasi Douglas' Cave Milliped G1 TN
- Pseudotremia eburnea G2G4 AL, GA, TN, VA
- Pseudotremia fergusoni Ferguson's Cave Milliped G1 VA
- Pseudotremia fongi GNR WV
- Pseudotremia fracta GA, TN
- Pseudotremia fulgida Greenbrier Valley Cave Millipede G3 WV
- Pseudotremia garlandae Garland's Cave Millipede G1 TN
- Pseudotremia handi GNR WV
- Pseudotremia hobbsi G4 VA, WV
- Pseudotremia hoffmani Hoffman's Cave Millipede GNR TN
- Pseudotremia hollidayi Holliday's Cave Milliped G1 TN
- Pseudotremia hubbardi Hubbard's Cave Milliped G1G2 VA
- Pseudotremia indianae Blue River Cave Millipede G4 IN
- Pseudotremia inexpectata Devault's Cave Milliped G1 VA
- Pseudotremia jaculohamatum Harpoon Cave Milliped G1 VA
- Pseudotremia johnholsingeri Holsinger's Cave Milliped G1 VA
- Pseudotremia kerboi GNR WV
- Pseudotremia laudermilki Laudermilk's Cave Millipede GNR KY
- Pseudotremia lethe G1 TN
- Pseudotremia lictor G1 TN
- Pseudotremia loomisi Loomis's Rough-backed Millipede G1 VA
- Pseudotremia lusciosa Germany Valley Cave Millipede G1 WV
- Pseudotremia manni Mann's Cave Millipede G1 TN
- Pseudotremia merops G1 KY
- Pseudotremia minos G1 AL, TN
- Pseudotremia momus G2 VA
- Pseudotremia nefanda Clark Cave Millipede G3G4 IN
- Pseudotremia nodosa G4 TN, VA
- Pseudotremia nyx G1 AL
- Pseudotremia orndorffi Orndorff's Cave Milliped G2 VA
- Pseudotremia peponocranium Pumpkin-headed Cave Milliped G1 VA
- Pseudotremia piscator Fisher Cave Milliped G1 VA
- Pseudotremia princeps South Branch Valley Cave Millipede G1 WV
- Pseudotremia purselli Pursell's Cave Milliped G1 IN
- Pseudotremia reynoldsae Reynolds Cave Millipede G1 IN
- Pseudotremia rhadamanthus G1G2 AL, TN
- Pseudotremia roebuckorum Roebuck's Cave Millipede G1 TN
- Pseudotremia ryensis Rye Cove Cave Milliped G1 VA
- Pseudotremia salifodina Jones' Saltpetre Cave Milliped G1 VA
- Pseudotremia salisae Salisa's Cave Milliped G2 IN, OH
- Pseudotremia schneiderae GNR WV
- Pseudotremia sheari Shear's Cave Millipede GNR TN
- Pseudotremia shelleyi Shelley's Cave Millipede GNR NC
- Pseudotremia spira G1 KY
- Pseudotremia styx GNR KY
- Pseudotremia tuberculata G3 VA
- Pseudotremia unca G1 KY
- Pseudotremia valga G1G2 TN, VA
- Pseudotremia wallaceae Wallace's Cave Millipede G1 TN
- Pseudotremia withersi Withers' Cave Millipede G1 TN
- Pseudotriton montanus Mud Salamander G5 KY
- Pseudotriton ruber Red Salamander G5 AL, GA, KY, TN
- Psilochorus cordatus
- Psychoda cinerea GNR KY
- Psychoda minuta GNR IN
- Psychoda phalaenoides GNR
- Psychoda pusilla GA
- Psychoda reevesi GA, TN
- Psychoda satchelli GNR
- Psychoda umbracola IL, TN
- Psychopomporus felipi GNR TX
- Psyllipsocus ramburii Cave Barklouse GNR AL, GA, IA, KY, NM, OK, TN
- Ptenothrix atra GNR IL, TN
- Ptenothrix marmorata GNR TN
- Ptenothrix quadrangularis TN
- Pteronotropis harperi Redeye Chub FL
- Pteronotus rubiginosus Wagner's Common Mustached Bat
- Pterostichus coracinus G5 AL, IL
- Pterostichus lachrymosus G5
- Pterostichus relictus GNR AL, GA
- Pterygoplichthys disjunctivus Vermiculated Sailfin Catfish GNR FL
- Ptomaphagus appalachianus AL, GA
- Ptomaphagus barri G2G3 TN
- Ptomaphagus bedfordensis TN
- Ptomaphagus californicus GNR CA
- Ptomaphagus cavernicola G4 AL, AR, FL, GA, IA, IL, MO, OK, TX
- Ptomaphagus chromolithus G2G3 AL, TN
- Ptomaphagus cocytus G1G2 AZ
- Ptomaphagus consobrinus GNR AL
- Ptomaphagus cumberlandus AL
- Ptomaphagus elabra
- Ptomaphagus episcopus G1G2 AL
- Ptomaphagus fecundus G1 TN
- Ptomaphagus fiskei G1G2 GA
- Ptomaphagus fumosus GA
- Ptomaphagus giaquintoi
- Ptomaphagus gypsum
- Ptomaphagus hatchi Hatch's Cave Fungus Beetle G3 AL, TN
- Ptomaphagus hazelae G1G2 AL
- Ptomaphagus hirtus Kentucky Cave Beetle G4 KY
- Ptomaphagus hubrichti G2G3 TN
- Ptomaphagus inyoensis CA
- Ptomaphagus julius G1G2 AL
- Ptomaphagus laticornis G1G2 AL
- Ptomaphagus leo
- Ptomaphagus loedingi G1G2 AL
- Ptomaphagus longicornis G3G4 AL
- Ptomaphagus nashvillensis TN
- Ptomaphagus neojonesi AL
- Ptomaphagus parashant AZ
- Ptomaphagus shapardi AR, OK
- Ptomaphagus solanum G1 AL
- Ptomaphagus spelaeus
- Ptomaphagus torodei Torode's Cave Fungus Beetle G1G2 AL
- Ptomaphagus ulkei AL
- Ptomaphagus valentinei Valentine's Cave Fungus Beetle G3G4 AL
- Ptomaphagus walteri G1G2 AL
- Ptomaphagus whiteselli G2G3 AL, GA
- Ptyoiulus impressus Flocculent Tailed Millipede G5
- Puliciphora suavis AL
- Puliciphora virginiensis GA
- Pupoides albilabris IL
- Pygmarrhopalites altus G2G3 KY
- Pygmarrhopalites arcus GNR ID
- Pygmarrhopalites ashcraftensis G1 IN
- Pygmarrhopalites ater Black Medusa Cave Springtail G3 IL, IN
- Pygmarrhopalites benitus G1 TN
- Pygmarrhopalites bimus G3G4 IA, IN, KY, TN
- Pygmarrhopalites buffaloensis AR
- Pygmarrhopalites caedus G3 VA
- Pygmarrhopalites carolynae Carolyn's Cave Springtail G4 IL, IN, VA, WV
- Pygmarrhopalites clarus Clarus Cave Springtail G4 AR, MO, SD, VA, WA, WI, WV
- Pygmarrhopalites commorus G2G3 VA, WV
- Pygmarrhopalites dubius G2G3 AR, IA, MN
- Pygmarrhopalites fransjanssens IL
- Pygmarrhopalites hirtus GNR IA, IL, WI
- Pygmarrhopalites hubbardi CO
- Pygmarrhopalites incantator IL
- Pygmarrhopalites jay G2G3 OK
- Pygmarrhopalites lacuna G1G2 VA
- Pygmarrhopalites leonardwoodensis MO
- Pygmarrhopalites lewisi Lewis' Cave Springtail GNR IL, IN
- Pygmarrhopalites madonnensis Madonna Cave Springtail GNR IL
- Pygmarrhopalites marshalli G3 TN, VA
- Pygmarrhopalites obtusus G1 VA
- Pygmarrhopalites pavo G3 IN, MO, TN, VA, WV
- Pygmarrhopalites plethorasari MO
- Pygmarrhopalites pygmaeus GNR AL, AR, GA, IA, IL, KY, MO, TN, VA
- Pygmarrhopalites sacer G2 VA, WV
- Pygmarrhopalites salemensis IL
- Pygmarrhopalites sapo IL
- Pygmarrhopalites sextus G1 VA
- Pygmarrhopalites shoshoneiensis NV
- Pygmarrhopalites silvus G2 VA
- Pygmarrhopalites texensis G3G4 TX
- Pygmarrhopalites youngsteadtii AR
- Pylodictis olivaris Flathead Catfish G5 FL
- Quedius alesi OK
- Quedius capucinus G5 KY
- Quedius erythrogaster G5 AL, GA, IL, TN, VA
- Quedius fulgidus Large Rove Beetle GNR AL, GA, IL, IN, KY
- Quedius mesomelinus Staph Beetle GNR IA, MN
- Quedius spelaeus GNR IA, IL, IN, WI
- Remasellus parvus G1G2 FL
- Rhadine austinica G1G2 TX
- Rhadine babcocki TX
- Rhadine bullis GNR TX
- Rhadine caudata G3 AL, GA, KY, TN
- Rhadine exilis G3 TX
- Rhadine grubbsi TX
- Rhadine howdeni TX
- Rhadine infernalis G2G3 TX
- Rhadine insolita G1G2 TX
- Rhadine ivyi TX
- Rhadine koepkei G1 TX
- Rhadine larvalis GNR AL, FL, GA, IL
- Rhadine longicollis NM, TX
- Rhadine noctivaga G1G2 TX
- Rhadine ozarkensis GH AR
- Rhadine persephone Tooth Cave Beetle G1G2 TX
- Rhadine reyesi GNR TX
- Rhadine rubra TX
- Rhadine russelli G1G2 TX
- Rhadine speca G2 TX
- Rhadine sprousei TX
- Rhadine subterranea G2 TX
- Rhadine tenebrosa G1G2 TX
- Rhagidia diversicolor WV
- Rhagidia varia G5 VA, WV
- Rhamdia quelen Silver Catfish
- Rhantus suturalis Cosmopolitan Diving Beetle MO
- Rheocyclops indiana Indiana Groundwater Copepod G1 IN, TN
- Rheocyclops virginianus VA
- Rhinichthys obtusus Western Blacknose Dace G5 AL
- Rhinocricus ocraceus
- Rhinotus panamanus
- Rhyacodrilus sodalis Aquatic Oligochaete Worm GNR WV
- Rhyacophila nigrita KY
- Robustocheles hilli AZ, GA, IN, KY, TN, VA, WA, WV
- Robustocheles occulta G2G3 AB, IA, WA
- Rotomelita ana G1G2 HI
- Rotomelita lokoa G1G2 HI
- Rudiloria trimaculata G5 VA
- Rudolfina cavernicola CO
- Rugathodes sexpunctatus Common Six-Spotted Cobweaver G5
- Rugilus dentatus GNR MO
- Rugosuscandona scharfi TX
- Ryloviella pilosa IN, KY
- Rymosia fasciata IN
- Rymosia filipes GNR IN, TN
- Rymosia triangularis GNR AL, IL
- Sabacon cavicolens North American Cavernicolous Harvestman GNR AL, AR, GA, IL, KY, MT, TN
- Saetigerocreagris phyllisae G1 CA
- Sagittocythere barri G5 AL, IN, KY, TN
- Sagittocythere stygia G1 KY
- Salmasellus howarthi GNR OR, WA
- Salmasellus steganothrix G2 AB, MT
- Satan eurystomus Widemouth Blindcat G1G2 TX
- Sayornis phoebe Eastern Phoebe G5 AL, AR, FL, GA, IL, KY, OK, TN, VA
- Scalopus aquaticus Eastern Mole G5 KY
- Scaphinotus andrewsii Andrew's Snail-Eating Beetle KY
- Scaphinotus unicolor AL
- Scatopse notata Black Compost Fly GNR IL
- Sceloporus undulatus Eastern Fence Lizard G5 AR, KY
- Schaefferia asymmetrica CO
- Schaefferia steinmanni CO
- Schaefferia unica CO
- Schizocosa ocreata Brush-Legged Split Wolf Spider G5 IL
- Schizocosa saltatrix G5
- Schornikovdona bellensis TX
- Schrankia howarthi HI
- Sciaphilus asperatus Strawberry Root Weevil GNR
- Scincella lateralis Ground Skink G5 AL, AR
- Sciodrepoides latinotum GNR MO
- Sciodrepoides terminans G5 GA
- Sciurus carolinensis Eastern Gray Squirrel G5 AL, AR, KY
- Sclerobunus cavicolens G1G2 MT
- Sclerobunus jemez NV
- Sclerobunus klomax GNR NM
- Sclerobunus madhousensis G1G2 UT
- Sclerobunus speoventus CO
- Sclerobunus steinmanni CO
- Sclerobunus ungulatus G1G2 NV
- Scoliocentra brachypterna GNR GA, IA, IL, IN, KY
- Scoliocentra fraterna GNR IN
- Scoliocentra tincta IN
- Scoliopteryx libatrix Herald Moth G5 AL, GA, IA, IL, IN, KY, OK, TN
- Scolopocryptops sexspinosus Eastern Fire Centipede GNR AL, GA, MO, TN
- Scoterpes alabama Alabama Cave Millipede AL
- Scoterpes austrinus G3G4 AL, GA
- Scoterpes blountensis TN
- Scoterpes copei G3G4 GA, KY, TN
- Scoterpes hesperus TN
- Scoterpes jackdanieli TN
- Scoterpes musicarustica TN
- Scoterpes nudus GA
- Scoterpes sollmani Sollman's Cave Millipede G1 IN
- Scoterpes stewartpecki Peck's Cave Millipede AL, TN
- Scoterpes syntheticus AL
- Scoterpes tombarri Barr's Cave Millipede KY, TN
- Scoterpes tricorner TN
- Scoterpes ventus G3 TN
- Scoterpes willreevesi Reeves' Cave Millipede AL, GA
- Scotinella redempta GNR IL
- Scutacarus strinatii IA
- Scutigera coleoptrata House Centipede GNR IL
- Scytodes intricata Spitting Spiders
- Scytonotus australis TN
- Scytonotus granulatus Granulated Millipede G5 AL, IN, KY, PA, TN
- Seborgia hershleri G1G2 TX
- Seborgia relicta G2G3 TX
- Sehirus cinctus White-Margined Burrower Bug GNR IL
- Selachochthonius heterodentatus
- Semionellus placidus Salmon Cherry Millipede G3 IL
- Semotilus atromaculatus Creek Chub G5 AL, KY, TN
- Sensillanura barberi GNR AR, TN
- Sensillanura illina IL
- Sepedophilus crassus G5 IA
- Sepedophilus littoreus Staph Beetle GNR GA
- Sequoiadesmus krejcae CA
- Shibaia longisensilla AR
- Sicifera bifurca GNR IL
- Sicifera dentata GNR IL, IN, OH
- Sigmocheir calaveras CA
- Sigmoria fumimontis TN
- Simulium parnassum Dark Black Fly GNR GA
- Simulium tuberosum Tubercled Black Fly G5
- Simulium venustum Whitestockinged Black Fly G5
- Simulium vernum
- Sinella agna G3G4 WV
- Sinella alata G5 IN, Mexico
- Sinella avita Avita Cave Springtail G3G4 IL, IN, KY, MO, Mexico
- Sinella baca G3G4 BC, CA, TX
- Sinella barri Barr's Cave Springtail G5 AL, AR, IL, IN, KY, MO, Mexico, TN, VA, WI
- Sinella basidens G3G4 IN, KY, TN
- Sinella caeca AL, IA, MN, MO, WI
- Sinella cavernarum G5 IL, IN, KY, LA, MD, MO, OH, PA, TN, VA, WA
- Sinella hoffmani Hoffman's Cave Springtail G5 KY, MD, Mexico, PA, TN, VA, WV
- Sinella krekeleri G3G4 KY, Mexico, WV
- Sinella tecta G1G2 CA
- Sinella yosiia G2G3 HI
- Sitophilus oryzae Rice Weevil GNR IA
- Skistodiaptomus pallidus GNR IN, KY
- Sminthurides lepus GNR TN
- Sminthurides malmgreni IL
- Sminthurinus henshawi GNR IL
- Soldanellonyx chappuisi G1 IN
- Soldanellonyx chapuisi G1 IN
- Soldanellonyx monardi Mite IN
- Soldanellonyx morardi G1 IN
- Solenopsis geminata Tropical Fire Ant
- Somatochlora tenebrosa Clamp-Tipped Emerald G5 AL
- Sorex cinereus Cinereus Shrew G5
- Sorex fumeus Smoky Shrew G5 KY
- Sorex hoyi American Pygmy Shrew G5
- Sorex palustris American Water Shrew G5
- Sparganophilus eiseni AL, NC
- Sparganophilus tamesis Amerikaanse Wortelwroeter GA
- Spelaedrilus multiporus G1 VA
- Spelaeorchestia koloana Kauai Cave Amphipod G1G2 HI
- Spelaeorchestia pahoehoe HI
- Speleobama vana G1 AL
- Speleochus blanchardensis AR, AZ
- Speleochus croceus G1G2 AL
- Speleochus eurous G2G3 AL
- Speleochus ferus G1G2 AL, TN
- Speleochus macosar AR, AZ
- Speleochus steevesi G4 AL, TN
- Speleochus stygicus G1G2 AL
- Speleochus synstygicus G1 AL
- Speleomaster lexi G1G2 ID
- Speleomaster pecki G1G2 ID
- Speleonura kenchristianseni G1 VA
- Speleonychia sengeri G1G2 WA
- Speleonycta ozarkensis Ozark Cave Bristletail AR, OK
- Spelobia clunipes GNR VA
- Spelobia maculipennis GNR CO
- Spelobia pseudosetaria GNR CO
- Spelobia semioculata GNR IA, IL, TN, VA, WI
- Spelobia tenebrarum Cave dung fly G5 AL, AR, GA, IL, IN, KY, MO, NY, OK, PA, TN, VA, WV
- Spelobia tuberculosa GNR CO
- Spelungula cavernicola Nelson Cave Spider
- Speocirolana hardeni G2G3 TX
- Speodesmus bicornourus G2G3 TX
- Speodesmus castellanus TX
- Speodesmus echinourus G2G3 TX
- Speodesmus falcatus Sickled Cave Millipede GNR TX
- Speodesmus ivyi Ivy's Cave Millipede GNR TX
- Speodesmus reddelli Reddell's Cave Millipede GNR TX
- Speolepta leptogaster IN
- Speoplatyrhinus poulsoni Alabama cavefish G1 AL
- Speorthus reyesi TX
- Speorthus tuganbius G2G3 NM, TX
- Speoseya grahami G2G3 CA
- Speotrombicula trifurca
- Spermophora senoculata Shortbodied Cellar Spider GNR FL
- Sphaeridia serrata GNR IL
- Sphaerium simile Grooved Fingernailclam
- Sphaerium transversum Long Fingernail Clam MO
- Sphaeroderus stenostomus Small Snail-Eating Ground Beetle G5 GA
- Sphaeromicola moria G1G2 TX
- Sphalloplana buchanani Buchanan's Cave Flatworm G1G2 KY, MD, TN
- Sphalloplana californica California Cave Flatworm G1G2 CA
- Sphalloplana chandleri Chandler's Cave Flatworm G1G2 IN, TN, VA
- Sphalloplana consimilis Powell Valley Cave Flatworm G2G3 TN, VA
- Sphalloplana culveri Culver's Cave Flatworm G1 WV
- Sphalloplana evaginata Perryville Cave Flatworm G1G2 MO
- Sphalloplana georgiana Georgia Cave Flatworm G1 GA
- Sphalloplana hoffmasteri Hoffmaster's Cave Flatworm G3G4 MD, WV
- Sphalloplana holsingeri Holsinger's Cave Flatworm G1G2 VA
- Sphalloplana hubrichti Hubricht's Cave Flatworm G2G4 IL, MO
- Sphalloplana hypogea G1G2 VA
- Sphalloplana kansensis Kansas Cave Flatworm G1G2 KS
- Sphalloplana mohri G3G4 TX
- Sphalloplana percoeca G5 AL, KY, TN, WV
- Sphalloplana pricei Refton Cave Flatworm G2G3 MD, PA
- Sphalloplana subtilis Biggers Cave Flatworm G1G2 VA
- Sphalloplana virginiana Rockbridge County Cave Flatworm G1 VA
- Sphalloplana weingartneri Weingartner's cave flatworm G4 IN
- Sphendononema guildingii Quarenta-Pernas
- Spinanycta alabamensis Alabama Cave Bristletail AL
- Spiniphora slossonae GNR AL
- Spongilla lacustris Common Freshwater Sponge G5 KY
- Steatoda triangulosa Triangulate Bud Spider GNR IL
- Steatornis caripensis Oilbird
- Stegana coleoptrata Pomace Fly
- Stelidota geminata Strawberry Sap Beetle GNR KY
- Stenistoderus rubripennis Red-Winged Rove Beetle GNR IA
- Stenochironomus pulchripennis GNR
- Stenolophus ochropezus G5 MO, TN
- Stenonema femoratum Cream Cahill G5 AR, IL
- Stenophilus californicus G1G2 CA
- Stenoponia americana GNR IA, TN
- Stenotrema angellum Kentucky Slitmouth G4 KY, TN
- Stenotrema edvardsi Ridge-And-Valley Slitmouth G4 KY
- Stenotrema exodon Alabama Slitmouth G2 AL
- Stenotrema hirsutum Hairy Slitmouth G5 KY
- Stenotrema spinosum Carinate Slitmouth G4 AL, TN
- Stenotrema stenotrema Inland Slitmouth AL, TN
- Stenotrema turbinella AL
- Stenus alacer MO
- Sternopsylla distincta NM
- Storeria occipitomaculata Mexican Yellowbelly Brown Snake [Hidalgoensis] G5 AR
- Striaria eldora G2G3 CA
- Striatura meridionalis Median Striate G5 TN
- Strigamia branneri IA, VA
- Strix varia Barred Owl G5 FL
- Strobilops affinis Eightfold Pinecone G4 IL
- Strobilops texasianus Southern Pinecone G5 GA
- Stygobromus abditus James Cave Amphipod G2G3 VA
- Stygobromus acicularis GNR MO
- Stygobromus ackerlyi G1G2 GA
- Stygobromus alabamensis Alabama cave amphipod G5 AL, AR, KS, LA, MO, MS, OK, TN, TX
- Stygobromus albapinus White Pine amphipod NV
- Stygobromus allegheniensis G5 MD, NY, PA, WV
- Stygobromus amicus Friendly Cave Amphipod G1 MD
- Stygobromus anacostensis DC
- Stygobromus araeus Tidewater Interstitial Amphipod G3 NC, VA
- Stygobromus arbucklensis Arbuckle Mountains Cave Amphipod GNR OK
- Stygobromus arizonensis Arizona Cave Amphipod G1 AZ
- Stygobromus bakeri TX
- Stygobromus balconis Balcones Cave Amphipod G2G3 TX
- Stygobromus baroodyi Rockbridge County Cave Amphipod G1 VA
- Stygobromus barri Barr's Cave Amphipod G2G3 MO, TN
- Stygobromus barryi G1 TN
- Stygobromus bifurcatus Bifurcated Cave Amphipod G3G4 TX
- Stygobromus biggersi Biggers' Cave Amphipod G2G4 MD, PA, VA, WV
- Stygobromus blinni Blinn's Cave Amphipod G1G2 AZ
- Stygobromus borealis Taconic Cave Amphipod G2G3 MA, NY, QC, VT
- Stygobromus boultoni Boulton's Cave Amphipod G1G2 AZ
- Stygobromus bowmani Bowman's Cave Amphipod G1G2 OK
- Stygobromus caecilius Cecil Groundwater Amphipod G1 MD
- Stygobromus canadensis Castleguard Cave Amphipod G1 AB
- Stygobromus carolinensis Carolina Seep Amphipod GH NC
- Stygobromus cherylae G1 CA
- Stygobromus clantoni Clanton's Cave Amphipod G4 AR, KS, MO, OK
- Stygobromus coloradensis Colorado Cave Amphipod G1G2 CO
- Stygobromus conradi Conrad's Cave Amphipod G1 VA
- Stygobromus cooperi Cooper's Cave Amphipod G1G2 WV
- Stygobromus cowani Cowan's Cave Amphipod G1 CA
- Stygobromus culveri Culver's Cave Amphipod G1 WV
- Stygobromus cumberlandus Cumberland Cave Amphipod G3G4 VA
- Stygobromus curroae Curro's Cave Amphipod G1G2 NM
- Stygobromus dejectus Cascade Cave Amphipod G1G2 TX
- Stygobromus dicksoni Dickson cave stygobromid G5 AL, GA, TN
- Stygobromus doughertyensis Dougherty Plain Cave Amphipod G1G2 FL, GA
- Stygobromus duplus G1G2 WA
- Stygobromus elatus G1 AR
- Stygobromus elliotti Elliott's Cave Amphipod G1G2 WA
- Stygobromus emarginatus Greenbrier Cave Amphipod G3 MD, WV
- Stygobromus ephemerus Ephemeral Cave Amphipod G1G2 VA
- Stygobromus estesi Craig County Cave Amphipod G4 VA
- Stygobromus exilis Central Kentucky Cave Amphipod G5 AL, KY, TN
- Stygobromus fecundus G1G2 TN
- Stygobromus felleri Feller's Groundwater Amphipod G1 MD
- Stygobromus fergusoni Ferguson's Cave Amphipod G1 VA
- Stygobromus finleyi Finley's Cave Amphipod G3G4 TN, VA
- Stygobromus flagellatus Ezell's Cave Amphipod G2G3 TX
- Stygobromus floridanus Florida Panhandle Cave Amphipod G1G2 CA, FL
- Stygobromus foliatus Rappahannock Spring Amphipod G2 MD, VA
- Stygobromus fontinalis G1G2 CO
- Stygobromus franzi Franz's Cave Amphipod G3G4 MD, PA, WV
- Stygobromus gallawayae Gallaway's Cave Amphipod G1 CA
- Stygobromus gardneri GNR AR, MO
- Stygobromus glacialis Glacier National Park Cave Amphipod G1 MT
- Stygobromus gracilipes G3G4 MD, PA, VA, WV
- Stygobromus gradyi Grady's Cave Amphipod G1 CA
- Stygobromus grahami Graham's Cave Amphipod G2 CA
- Stygobromus grandis G1 GA
- Stygobromus hadenoecus Devil's Sinkhole Amphipod G1G2 TX
- Stygobromus harai Hara's Cave Amphipod G1 CA
- Stygobromus hayi Hay's Spring Amphipod G1G2 DC, PA
- Stygobromus herbsti Herbst's Cave Amphipod G2G3 NV
- Stygobromus heteropodus Pickle Springs Amphipod G1G2 MO
- Stygobromus hoffmani Hoffman's Cave Amphipod G2 VA
- Stygobromus holsingeri Holsinger's Cave Amphipod G1G2 CO
- Stygobromus hubbardi Hupp's Hill Cave Amphipod G1 VA
- Stygobromus hubbsi Malheur Cave Amphipod G1G2 OR
- Stygobromus hyporheicus Hyporheic Amphipod G1 CA
- Stygobromus idahoensis Idaho Groundwater Amphipod G1 ID
- Stygobromus imperialis Imperial Cave Amphipod G1 CA
- Stygobromus indentatus Tidewater Amphipod G3 MD, NC, VA
- Stygobromus inexpectatus G1 AL
- Stygobromus interitus New Castle Murder Hole Cave Amphipod G1G2 VA
- Stygobromus interstitialis Interstitial Amphipod G1G3 CO
- Stygobromus iowae Iowa Cave Amphipod G2G3 IA, IL, MN
- Stygobromus jemezensis Jemez Mountains Groundwater Amphipod G1G2 NM
- Stygobromus kenki Rock Creek Groundwater Amphipod G2 DC, MD, VA
- Stygobromus lacicolus Lake Tahoe Groundwater Amphipod G1 CA, NV
- Stygobromus lanensis Lane County Groundwater Amphipod G1G2 OR
- Stygobromus latus G1G3 WA
- Stygobromus leensis Lee County Cave Amphipod G1G2 VA
- Stygobromus limbus Border Cave Amphipod G1G2 TX
- Stygobromus longipes Long-legged Cave Amphipod G2G3 TX
- Stygobromus lucifugus Rubious Cave Amphipod G1G2 IL
- Stygobromus mackenziei MacKenzie's Cave Amphipod G1 CA
- Stygobromus mackini Southwestern Virginia Cave Amphipod G5 IN, KY, TN, TX, VA, WV
- Stygobromus mausi Round Hill Cave Amphipod G1 VA
- Stygobromus minutus G2G3 GA
- Stygobromus montanensis G1G2 MT
- Stygobromus montanus Mountain Cave Amphipod G1 AR
- Stygobromus morrisoni Morrison's Cave Amphipod G1G2 VA, WV
- Stygobromus mundus Bath County Cave Amphipod G1 VA
- Stygobromus myersae Myers' Groundwater Amphipod G1 CA, NV
- Stygobromus mysticus Secret Cave Amphipod G1 CA
- Stygobromus nanus G1 WV
- Stygobromus nortoni Norton's Cave Amphipod G2G3 TN
- Stygobromus obrutus Pittsylvania Well Amphipod G1G2 VA
- Stygobromus obscurus G1G2 MT
- Stygobromus onondagaensis Onondaga Cave Amphipod G3 AR, KS, MO, OK
- Stygobromus oregonensis G1G2 OR
- Stygobromus ozarkensis Ozark Cave Amphipod G4 AR, MO, OK
- Stygobromus parvus Minute Cave Amphipod G2 VA, WV
- Stygobromus paveki Pavek's Groundwater Amphipod MD
- Stygobromus paxillus Prettyboy Groundwater Amphipod G1 MD
- Stygobromus pecki Peck's Cave Amphipod G1G2 TX
- Stygobromus pennaki Pennak Cave Amphipod G2G3 CO
- Stygobromus phreaticus Northern Virginia Well Amphipod G1 VA
- Stygobromus pizzinii Pizzini's Cave Amphipod G3G4 DC, MD, PA, VA
- Stygobromus pollostus Least Cave Amphipod G2G3 WV
- Stygobromus pseudospinosus Luray Caverns Amphipod G1 VA
- Stygobromus putealis Wisconsin Well Amphipod G2G3 WI
- Stygobromus puteanus G1G2 MT
- Stygobromus quatsinensis Quatsino Cave Amphipod G1G2 AK, BC
- Stygobromus rallus Narrow Groundwater Amphipod G1G3 WA
- Stygobromus redactus Pattons Cave Amphipod G1 WV
- Stygobromus reddelli G1G2 TX
- Stygobromus rudolphi Rudolph's Groundwater Amphipod G1 CA
- Stygobromus russelli Russell's Cave Amphipod G4 TX
- Stygobromus saltuaris Williamette Natonal Forest Groundwater Amphipod G1G2 OR
- Stygobromus scottsruni Scotts Run Groundwater Amphipod VA
- Stygobromus secundus G1 AB
- Stygobromus sextarius Capital Area Groundwater Amphipod G1 DC, MD, VA
- Stygobromus sheldoni Sheldon's Groundwater Amphipod G1 CA
- Stygobromus sierrensis Sierra Groundwater Amphipod G1 CA
- Stygobromus simplex Simple Cave Amphipod G1G2 CO
- Stygobromus smithi Alabama Well Amphipod G2G3 AL, TN
- Stygobromus sparsus Gregory Cave Amphipod G1 TN
- Stygobromus spinatus Spiny Cave Amphipod G2G3 VA, WV
- Stygobromus spinosus Blue Ridge Cave Amphipod G3 VA
- Stygobromus stegerorum Madison Cave Amphipod G1 VA
- Stygobromus stellmacki Stellmack's Cave Amphipod G1G2 PA
- Stygobromus subtilis Subtle Cave Amphipod G2 IL, MI, MO
- Stygobromus tahoensis G1 CA, NV
- Stygobromus tenuis G4 CT, DC, MA, MD, NY, PA, VA, WV
- Stygobromus trinus Trinity County Cave Amphipod G1 CA
- Stygobromus tritus Worn Groundwater Amphipod G1 MT
- Stygobromus urospinatus Spinose Cave Amphipod G1G3 CO
- Stygobromus utahensis Utah Cave Amphipod G1G2 UT
- Stygobromus vitreus Mammoth Cave stygobromid G4 AL, IN, KY, TN
- Stygobromus wahkeenensis Wahkeena Creek Groundwater Amphipod G1G2 OR
- Stygobromus wardi Ward's Groundwater Amphipod G1G2 CO
- Stygobromus wengerorum Wenger Cave Amphipod G1 CA
- Stygonyx courtneyi G1G2 OR
- Stygoparnus comalensis Comal Springs Dryopid Beetle G1G2 TX
- Stygoporus oregonensis G1G2 OR
- Stygopyrgus bartonensis Barton cavesnail G1 TX
- Stygopyrgus gracilis TX
- Stygopyrgus variabilis TX
- Stylodrilus beattiei G1 VA, WV
- Stylodrilus californianus CA
- Stylodrilus wahkeenensis AL, OR, TN
- Subulina octona Miniature Awlsnail G5
- Superodontella cornifer GNR IL
- Superodontella substriata GNR IL
- Sus scrofa Eurasian Wild Pig G5 KY
- Sylvilagus floridanus Eastern Cottontail G5 AL, KY
- Syngrapha alias Spruce Climbing Cutworm G5
- Syrphus rectus
- Tachinus fimbriatus G5 GA
- Tachinus fumipennis G5 IA
- Tachycines asynamorus Greenhouse Camel Cricket GNR AL, GA, IL, OK
- Tachypeza humeralis GNR
- Tachyporus maculipennis IL
- Tachys proximus GNR NM
- Tachys pumilus GNR MO
- Tachys scitulus G5 VA
- Tachyura lutea TN
- Tadarida brasiliensis Brazilian Free-Tailed Bat G5 FL, KY, NM, TX
- Taiyutyla loftinae CA
- Tamias striatus Eastern Chipmunk G5 AR, IN, KY, TN
- Tamiasciurus hudsonicus Red Squirrel G5 KY
- Tanytarsus recurvatus GNR GA
- Taracus aspenae OR
- Taracus fluvipileus CA
- Taracus marchingtoni OR
- Taracus silvestrii G1G2 OR
- Taracus taylori GNR NV
- Taranucnus ornithes GNR AL
- Tarebia granifera Quilted Melania G5 FL
- Tarlina noorundi
- Tarnania tarnanii GNR
- Tartarocreagris altimana G1G2 TX
- Tartarocreagris amblyopa G1G2 TX
- Tartarocreagris attenuata G1G2 TX
- Tartarocreagris domina G1G2 TX
- Tartarocreagris grubbsi G1G2 TX
- Tartarocreagris hoodensis G1G2 TX
- Tartarocreagris infernalis G2G3 TX
- Tartarocreagris intermedia G1G2 TX
- Tartarocreagris proserpina G1G2 TX
- Tartarocreagris reyesi GNR TX
- Tartarocreagris texana Tooth Cave Pseudoscorpion G1G2 TX
- Taxidea taxus American Badger G5
- Tayshaneta anopica G1G2 TX
- Tayshaneta archambaulti GNR TX
- Tayshaneta bullis GNR TX
- Tayshaneta concinna G1G2 TX
- Tayshaneta fawcetti GNR TX
- Tayshaneta microps Government Canyon Bat Cave Spider G1 TX
- Tayshaneta myopica Tooth Cave Spider G1G2 TX
- Tayshaneta oconnorae GNR TX
- Tayshaneta sandersi GNR TX
- Tayshaneta sprousei GNR TX
- Tayshaneta vidrio GNR TX
- Tayshaneta whitei GNR TX
- Tectocepheus velatus GNR IA
- Tegenaria domestica Barn Funnel Weaver GNR AL, GA, IL, IN
- Tegenaria pagana Rural Funnel-Web Spider NM
- Telomerina cana AL, TN
- Telomerina chillcotti GNR TN, TX
- Telomerina flavipes GNR AR
- Tenuiphantes sabulosus GNR AL, IL, TN
- Terrapene carolina Common Box Turtle G5 AL, FL, GA, IL, KY, TN
- Terrapene triunguis Three-Toed Box Turtle GNR AR
- Terrilimosina racovitzai GNR IA, IL, NY, PA, WI
- Tethysbaena texana GNR TX
- Tetracion jonesi Jones' Cave Millipede G3G4 AL, TN
- Tetracion tennesseensis Tennessee Cave Millipede G2G3 TN
- Tetragnatha elongata Elongate Stilt Spider G5
- Tetragnatha laboriosa Long-Jawed Orb Weaver G5 IN
- Tetragnatha shoshone Amerikanische Streckerspinne GNR IL
- Tetragnatha versicolor Versicolor Long-Jawed Orbweaver G5 AL, KY
- Texamaurops reddelli Kretschmarr Cave Mold Beetle G1G2 TX
- Texanobathynella aaronswinki TX
- Texanobathynella bowmani GNR TX
- Texanobathynella coloradoensis TX
- Texanobathynella sachi CA
- Texapyrgus diaboli Devil Tryonia TX
- Texapyrgus longleyi Striated hydrobe G1 TX
- Texella cokendolpheri Cokendolpher Cave Harvestman G1 TX
- Texella elliotti TX
- Texella hardeni G1G2 TX
- Texella hilgerensis TX
- Texella martensi CA
- Texella mulaiki G2G3 TX
- Texella reyesi Bone Cave Harvestman G2G3 TX
- Texella shoshone Shoshone Cave Harvestman G1 CA
- Texella tuberculata TX
- Texella welbourni G1G2 NM
- Texella whitei TX
- Texicerberus amistad GNR TX
- Texicerberus castilloi TX
- Texicerberus schotteae GNR TX
- Texiweckelia texensis G2G3 TX
- Texiweckeliopsis insolita G3 TX
- Texoreddellia aquilonalis TX
- Texoreddellia capitesquameo TX
- Texoreddellia coahuilensis Mexico, TX
- Texoreddellia media TX
- Texoreddellia occasus TX
- Texoreddellia texensis G4 TX
- Thalassaphorura encarpata Springtail IL
- Thalkethops grallatrix G1G2 NM
- Thamnophis proximus Western Ribbon Snake G5
- Thaumatogryllus cavicola Vovanoes Cave Cricket G1G2 HI
- Theatops phanus G2G3 TX
- Theotima makua G2G3 HI
- Theridion flavonotatum AL
- Theridion glaucescens GNR AL
- Theridiosoma gemmosum Common Eastern Ray Spider G5 AL, GA, IL, IN
- Theridula opulenta Cobweb Spiders GNR AL
- Thermobia domestica Firebrat GNR IA
- Thesiastes fossulatus IL
- Thymoites marxi GNR AL, GA
- Thymoites minero G1G2 AZ
- Tidarren sisyphoides Tent Cobweb Weaver AL
- Tingupa pallida Tingupa Cave Millipede G4 AR, IL, MO, TN
- Tipula abdominalis Giant Crane Fly GNR GA
- Tipula algonquin GNR AR
- Tipula caloptera GNR
- Tmesiphorus costalis GNR AL
- Tolus appalachius Appalachian Cave Spider G3G4 AL, TN
- Tomocerus curtus IA
- Tomocerus dubius FL, KY
- Tomocerus flavescens GA, IL, TN
- Tomocerus vulgaris GNR TN, WI
- Tomoderus impressulus TN
- Toxidium compressum GNR IA
- Trachelipus rathkii Rathke's Woodlouse GNR KY, WV
- Trachemys scripta Pond Slider G5 FL
- Traegaardhia gracilis
- Traegaardhia holsingeri AR, KY, MO, OK
- Traegaardhia paralleloseta G1 VA
- Traegaardhia similis AR, MO
- Trechus cumberlandus G2 KY, TN
- Trechus tennesseensis GNR TN
- Trechus tuckaleechee GNR TN
- Triacanthella copelandi G1 TN
- Trichobius major GNR FL, NM
- Trichocera fattigiana GA
- Trichocera hiemalis Winterpluimantennemug GNR
- Trichocera maculipennis GNR
- Trichocera regelationis Dooimug GNR IA, IL
- Trichodrilus comalensis TX
- Trichodrilus culveri G1 WV
- Trichomorpha capillata
- Trichoniscus provisorius Ansarisiiranen VA
- Trichoniscus pusillus Common Pygmy Woodlouse KY, OK, TN, VA
- Trichopetalum dux G4 KY
- Trichopetalum stannardi MD
- Trichopetalum uncum GNR AR, IN, MO
- Trichophya pilicornis Staph Beetle GNR MN
- Trichotichnus dichrous GNR AL
- Trichotichnus fulgens MO
- Tridenchthonius juxtlahuaca
- Trigenotyla blacki Black's cave millipede G1 OK
- Trigenotyla parca G2 AR
- Trimiomelba dubia GNR TN
- Trinectes maculatus Freshwater Flounder G5 FL
- Triodopsis complanata Glossy Threetooth G2 KY, TN
- Triodopsis hopetonensis Magnolia Threetooth G4 FL
- Triodopsis tridentata Northern Threetooth G5 AL
- Triodopsis vulgata Dished Threetooth G5 IL
- Triphosa haesitata Tissue Moth G5
- Trisetobisium fallax GNR AL
- Trochosa terricola Gewone Nachtwolfspin G5
- Troglichthys rosae Ozark cavefish G3 AR, MO, OK
- Troglocambarus maclanei North Florida Spider Cave Crayfish G1G2 FL
- Trogloglanis pattersoni Toothless Blindcat G1G2 TX
- Trombicula cavernarum
- Trombicula tibbettsi AL, TX
- Tropisternus collaris Collared Water Scavenger Beetle GNR AR
- Tropocyclops extensus IN
- Tropocyclops prasinus IL, IN, KY
- Trox aequalis Even Hide Scarab Beetle G5 GA
- Trox laticollis GNR IA
- Trox scaber Hide Beetle GNR
- Tuberochernes aalbui G1G2 CA
- Tuberochernes cohni GNR AZ
- Tuberochernes ubicki G1 AZ
- Tuberona leonidasi TX
- Tullbergia clavata IA, IL
- Tullbergia granulata IA
- Tullbergia macrochaeta IA
- Tychobythinus bythinioides GNR IL
- Tychobythinus hubrichti G1G2 KY
- Tychobythinus jonesi G1G2 AL
- Tychobythinus strinatii G1G2 TN
- Tylparua troglodytes HI
- Typhlichthys eigenmanni Salem Plateau Cavefish G3 AR, MO
- Typhlichthys subterraneus Southern Cavefish G4 AL, GA, KY, TN
- Typhlobius caecus AL, GA
- Typhloelmis caroline GNR TX
- Typhloelmis finegan GNR TX
- Typhloelmis sanfelipe GNR TX
- Typhloelmis spangleri GNR TX
- Typhlogastrura alabamensis G1G2 AL
- Typhlogastrura christianseni G1 AL, TN
- Typhlogastrura fousheensis Foushee Cave Springtail G1 AR
- Typhlogastrura helleri Heller Cave Springtail GNR PA
- Typhlogastrura hubbardi G2G3 VA
- Typhlogastrura valentini Valentine's Cave Springtail G1 VA
- Typhlonesticus silvestrii Silvestri's Cave Spider CA, OR
- Tyrannochthonius alabamensis G1 AL
- Tyrannochthonius aladdinensis G1 AL
- Tyrannochthonius aralu G1 AL
- Tyrannochthonius archeri G1 AL
- Tyrannochthonius attenuatus G1 AL
- Tyrannochthonius avernicolus G1 AL
- Tyrannochthonius barri Barr's Cave Pseudoscorpion G1 AL
- Tyrannochthonius binoculatus G1 AL
- Tyrannochthonius chamberlini G1 AL
- Tyrannochthonius charon G1 AL
- Tyrannochthonius diabolus G1G2 AL
- Tyrannochthonius erebicus G1 AL
- Tyrannochthonius felix G1 AL
- Tyrannochthonius fiskei G1 TN
- Tyrannochthonius gnomus G1 AL
- Tyrannochthonius halopotamus G1 AL, TN
- Tyrannochthonius hypogeus G1 KY
- Tyrannochthonius infernalis G1 AL
- Tyrannochthonius jonesi Jones' Cave Pseudoscorpion G1 AL
- Tyrannochthonius muchmoreorum GNR TX
- Tyrannochthonius nergal G1 AL
- Tyrannochthonius orpheus G1G2 AL
- Tyrannochthonius osiris G1 AL
- Tyrannochthonius parvus G1G2 AL
- Tyrannochthonius pecki Peck's Cave Peudoscorpion G1 AL
- Tyrannochthonius pholeter G1 AL
- Tyrannochthonius pluto G1G2 AL
- Tyrannochthonius pupukeanus G1 HI
- Tyrannochthonius satan G1 AL
- Tyrannochthonius sheltae Shelta Cave Pseudoscorpion G1 AL
- Tyrannochthonius skeletonis G1 AL
- Tyrannochthonius steevesi Steeves' Cave Pseudoscorpion G1 TN
- Tyrannochthonius stonei HI
- Tyrannochthonius stygius G1 AL
- Tyrannochthonius tartarus G1 AL
- Tyrannochthonius tenuis G1 AL
- Tyrannochthonius torodei Torode's Cave Pseudoscorpion G1 AL
- Tyrannochthonius troglodytes G1G2 TX
- Ufocandona hannaleeae TX
- Ula elegans GNR
- Uloborus glomosus Featherlegged Orbweaver GNR AL, NM
- Ulomorpha pilosella GNR KY
- Uncinocythere ambophora G2G3 FL
- Uncinocythere equicurva
- Uncinocythere pholetera G1G2 MO
- Uncinocythere simondsi KY
- Uncinocythere warreni G1 AR, FL, GA
- Uncinocythere xania G3 AR, GA, IN, MO
- Uncinocythere zancla KY
- Uniomerus carolinianus Eastern Pondhorn G4 FL
- Uroblaniulus canadensis Sickle Tailed Millipede G5
- Uroctonus grahami G1G2 CA
- Uroseius infirmus TN
- Ursus americanus American Black Bear G5 AR, IN, KY, TN
- Ursus arctos Brown Bear G4
- Usofila gracilis G1G2 CA
- Uvarus texanus TX
- Vachonium boneti
- Vachonium maya
- Vaejovis carolinianus Southern Unstriped Scorpion G5 AL
- Vallonia pulchella Beautiful Grass Snail G5 KY
- Varacosa avara Spurred Secretive Wolf Spider GNR IL
- Veigaia bakeri Baker's Cave Mite G1 IN, NM
- Veigaia kochi GNR
- Veigaia wyandottensis Wyandotte Cave Mite G1 IN
- Ventridens demissus Perforate Dome G5 FL, TN
- Ventridens gularis Throaty Dome G5 AL, GA, KY, TN
- Ventridens intertextus Pyramid Dome G5 IL
- Ventridens ligera Globose Dome G5 GA, KY
- Vetericaris chaceorum G1 HI
- Virginia valeriae Smooth Earth Snake G5 AR
- Vitronura giselae IL, TN
- Vitropyrgus lillianae TX
- Vulcanochthonius aa HI
- Vulcanochthonius howarthi G1G2 HI
- Vulcanochthonius pohakuloae HI
- Wadotes calcaratus G5 GA, TN
- Wadotes saturnus GA
- Watobius anderisus AL
- Wormaldia moesta G4 KY
- Wulfila albens AL
- Xenolimosina sicula GNR CO
- Xenotrechus condei G1G2 MO
- Xenotrechus denticollis G1G2 MO
- Xenylla welchi Springtail GNR IL
- Xironodrilus formosus TN
- Xironogiton instabilius VA, WV
- Xolotrema denotatum Velvet Wedge G4 IL
- Xolotrema fosteri Bladetooth Wedge G5 IL
- Xolotrema obstrictum Sharp Wedge G4 TN
- Yunohamella lyrica Lyric Cobweaver GNR AL, IN
- Zealeuctra narfi Northern Needlefly G4 IL
- Zonitoides arboreus Bark Snail AL, FL, GA, IL, KY, MO, TN, VA
- Zonitoides limatulus Dull Gloss G4 KY
- Zonitoides nitidus Black Gloss IL
- Zosteractis interminata Zosteractis Cave Millipede G1 IL, MO
- Zygonopus krekeleri West Virginia Blind Cave Millipede G4 WV
- Zygonopus packardi Packard's Blind Cave Millipede G4 VA, WV
- Zygonopus weyeriensis Grand Caverns Blind Cave Millipede G3G4 VA, WV
- Zygonopus whitei Luray Caverns Blind Cave Millipede G3G4 VA, WV
No species match that filter.