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A journal PDF is kept for our reference only; an author manuscript, agency report, or thesis may be hosted if you say we can.Species it concernsStart typing a scientific or common nameMy species is not in this listI am not sure what it is— or choose from the species below —Larca aalbui – Aalbu’s Cave PseudoscorpionAbacion lactariumAbacion magnumAcanthocyclops brevispinosusAcanthocyclops einsleiAcanthocyclops exilisAcanthocyclops parasensitivusAcanthocyclops robustus – RobusthopsAcanthocyclops venustoidesAcanthocyclops vernalis – SurvannshopsAchemenides pectinatusAclodes nicuesaAcris blanchardi – Blanchard’s Cricket FrogAcris crepitans – Northern Cricket FrogAcris gryllus – Southern Cricket FrogAcroneuria abnormis – Common StoneAcrotrichis lucidulaActia diffidensAedes abserratus – Serrated MosquitoAedes aurifer – Golden Bog MosquitoAedes canadensis – Woodland Pool MosquitoAedes cinereusAedes communis – Snow MosquitoAedes fitchiiAedes provocans – Provoking MosquitoAedes punctor – Moustique Pointu Provocateur CanadienAedes sticticus – Floodwater MosquitoAedes stimulans – Woodland MosquitoAedes triseriatus – Eastern Treehole MosquitoAedes vexans – Vexans MosquitoAgastoschizomus texanusAgelenopsis pennsylvanica – Pennsylvania Grass SpiderAgkistrodon conanti – Green-Tailed MoccasinAgkistrodon contortrix – CopperheadAgonum extensicolle – Extensive Harp Ground BeetleAgonum punctiforme – Punctiform Harp Ground BeetleAgyneta gagneiAgyneta hediniAgyneta unimaculataStygobromus alabamensis – Alabama cave amphipodPseudanophthalmus alabamae – Alabama Cave BeetleSpinanycta alabamensis – Alabama Cave BristletailCambarus jonesi – Alabama Cave CrayfishScoterpes alabama – Alabama Cave MillipedePalaemonias alabamae – Alabama Cave ShrimpSpeoplatyrhinus poulsoni – Alabama cavefishAlabamocreagris mortis – Alabama pseudoscorpionStygobromus smithi – Alabama Well AmphipodAlabamocreagris peckiBanksula californica – Alabaster Cave HarvestmanAlbiorix anophthalmusAlectorobius concanensisAlectorobius kelleyiAleochara castaneimarmotaeAleochara castaneipennisAleochara fumata – Rove BeetleAleochara lucifugaAleochara ocularisChaetaspis aleyorum – Aley’s Cave MillipedPseudanophthalmus alladini – Alladin’s Cave BeetleCaecidotea alleghenyensis – Allegheny Spring IsopodAlligator mississippiensis – Louisiana AlligatorAllocosa funereaAllocosa sublataAllolobophora chlorotica – Green WormAllomideopsis wichitaensisAllotexiweckelia hirsutaAlmuerzothyas comalensisAlocodesmus angustatusAloconota diversisetaAloconota insecta – Staph BeetleAloconota neospeleaAloconota sulcifrons – Sulcate-Faced Minute Rove BeetleAlucita huebneriAmara musculisAmbloplites rupestris – Rock BassAmbystoma maculatum – Spotted SalamanderAmbystoma opacum – Marbled SalamanderAmbystoma tigrinum – Eastern Tiger SalamanderAmeiurus catus – White CatfishAmeiurus melas – Black BullheadAmeiurus natalis – Yellow BullheadAmeiurus nebulosus – Brown BullheadAmeractis satisCaecidotea putea – American WaterslatersAmericina adustaAmericocreagris columbianaAmerigoniscus centralisAmerigoniscus curvatusAmerigoniscus georgiensisAmerigoniscus gipsocolusAmerigoniscus malheurensisAmerigoniscus nicholasiAmerigoniscus proximusAmerizus wingateiAmeroduvalius jeanneliAmnestus subferrugineusAmoeba guttulaAmoeba vespertilioAmoebaleria defessaAmphasia interstitialis – Red-Headed Ground BeetleAmphibiocapillaria texensisAmplaria flucticulusAmplaria shastaeAmynthas diffringens – Japanese JumperAmynthas minimusNesidiolestes ana – Ana Wingless Thread BugAnachemmis jungiAnahita punctulata – Southeastern Wandering SpiderAnargyrtes annulata – Grillo De CuevaAnasaitis canosus – Twin-Flagged Jumping SpiderAnaxyrus americanus – American ToadAnaxyrus fowleri – Fowler’s ToadAnaxyrus terrestris – Southern ToadAndrognathus corticarius – Cope’s Noodle MillipedeAneides aeneus – Green SalamanderAnevrina olympiaeAnguilla rostrata – American EelAnguispira alternataAnguispira mordax – Appalachian TigersnailAnillaspis explanataAnillinus actuipennisAnillinus bexarensisAnillinus cavicolaAnillinus clineiAnillinus folkertsioidesAnillinus forthoodensisAnillinus hildebrandtiAnillinus longicepsAnillinus reddelliAnillinus smokiensisAnillinus tombarriAnillinus valentineiAnillinus wisemanensisAnisodactylus opaculusAnisolabis howarthiAniulus nigransAnkyrodrilus legaeusAnolis carolinensis – Carolina AnoleAnopheles earleiAnopheles punctipennis – Woodland Malaria MosquitoAnopheles quadrimaculatus – Common Malaria MosquitoAnotylus exiguus – Rove BeetleAnotylus tetracarinatus – Rove BeetleAnthicus cervinus – Cloudy Flower BeetleAnthrobia coyleiAnticarsia gemmatalis – Velvetbean CaterpillarAntrodiaetus unicolorAntrolana liraAntroxestoblatta immaculataAnurida tullbergiAnyphaena celerAphaenogaster tennesseensis – Tennessee Collared AntApheloria corrugataApheloria montanaApheloria virginiensis – Black-And-Gold Flat MillipedeAphrastochthonius pachysetusAphrastochthonius peckiAphrastochthonius tenaxAphredoderus gibbosusAplexa hypnorum – Moss Bladder SnailApocheiridium reddelliApochthonius coecusApochthonius colecampiApochthonius diabolusApochthonius forbesiApochthonius grubbsiApochthonius holsingeriApochthonius minorApochthonius moestusApochthonius titanicusAporrectodea longa – Deep-Burrowing LongwormAporrectodea rosea – Pink SoilwormAporrectodea trapezoidesAporrectodea tuberculataAporrectodea turgidaOrconectes packardi – Appalachian Cave CrayfishPorrhomma cavernicola – Appalachian Cave SpiderTolus appalachius – Appalachian Cave SpiderFontigens bottimeri – Appalachian SpringsnailCrangonyx antennatus – Appalachian Valley crangonyctidAppaleptoneta barrowsiAppaleptoneta credulaAppaleptoneta fiskeiAppaleptoneta jonesiAquarius conformisAquarius remigis – North American Common Water StriderAraneus cavaticus – Barn OrbweaverAraneus diadematus – Cross OrbweaverAraneus marmoreus – Marbled OrbweaverHorologion speokites – Arbuckle Cave BeetleStygobromus arbucklensis – Arbuckle Mountains Cave AmphipodLiocranoides archeri – Archer’s Two-clawed Cave SpiderArcteonais lomondi – Aquatic Oligochaete WormArenophilus bipuncticeps – Northern Short-Clawed CentipedeArgyrodes nephilaeArianops cavernensisArianops goreiArianops jeanneliArianops peckiArianops steevesiArianops stygicaArion fasciatus – Banded SlugStygobromus arizonensis – Arizona Cave AmphipodArmadillidium nasatum – Nosy Pill WoodlouseArmadillidium vulgare – Common Pill WoodlouseArrhopalites benitusArrhopalites caecusArtesia subterraneaArtesia welbourniBrackenridgia ashleyi – Ashley’s Terrestrial Cave IsopodAtheta alabamaAtheta annexaAtheta klagesiAtheta lucifugaAtheta troglophilaAtranus pubescensAttagenus brunneusAttheyella illinoisensisAttheyella nordenskioldiiAttheyella pilosaEurycea waterlooensis – Austin Blind SalamanderAustralinocreagris grahamiAustrotyla awishosholaAustrotyla coloradensisAustrotyla montivagaAustrotyla specusAustrotyla stephensoniPseudanophthalmus avernus – Avernus Cave BeetleSinella avita – Avita Cave SpringtailAxonopsella bakeriAzilia affinis – Longjawed Orb WeaversBactrurus brachycaudusBactrurus cellulanusBactrurus mucronatusBactrurus wilsoniPseudanophthalmus insularis – Baker Station Cave BeetleVeigaia bakeri – Baker’s Cave MiteBalantiopteryx plicata – Gray Sac-Winged BatStygobromus balconis – Balcones Cave AmphipodPalaemonetes antrorum – Balcones Cave ShrimpBalconorbis uvaldensis – Balcones ghostsnailBalconorbis coronaeCicurina bandida – Bandit Cave MeshweaverBanksula grahamiCrangonyx barri – Barr’s Cave AmphipodStygobromus barri – Barr’s Cave AmphipodPseudotremia barri – Barr’s Cave MillipedeScoterpes tombarri – Barr’s Cave MillipedeTyrannochthonius barri – Barr’s Cave PseudoscorpionNesticus barri – Barr’s Cave SpiderSinella barri – Barr’s Cave SpringtailMiktoniscus barri – Barr’s Terrestrial Cave IsopodStygopyrgus bartonensis – Barton cavesnailBasacallis tarachodesBasilia boardmaniCaecidotea macropropoda – Bat Cave IsopodStygobromus mundus – Bath County Cave AmphipodBathynella fraternaBathynella germanitasBathynella ripariaBathyphantes alboventris – Notch-Tipped Shield SheetweaverBathyphantes nigrinus – Donker WevertjeBathyphantes pallidus – Pale Sheetweb WeaverBathyphantes reprobus – Reprobus Sheetweb WeaverBatriasymmodes greeveriBatriasymmodes monstrosusBatriasymmodes parkiBatriasymmodes quisnamusBatriasymmodes spelaeusBatriasymmodes troglodytesBatrisodes barriBatrisodes cavernosusBatrisodes clypeospecusBatrisodes denticollisBatrisodes dentifronsBatrisodes fantiBatrisodes feminiclypeusBatrisodes feruliferBatrisodes gemmoidesBatrisodes gemmusBatrisodes gravesiBatrisodes grubbsiBatrisodes henrotiBatrisodes hubrichtiBatrisodes incispesBatrisodes jocuvestusBatrisodes jonesiBatrisodes krekeleriBatrisodes lineaticollisBatrisodes pannosusBatrisodes pekinsiBatrisodes profundusBatrisodes reyesiBatrisodes rossiBatrisodes schmittiBatrisodes shadeaeBatrisodes specusBatrisodes subterraneusBatrisodes tumorisBatrisodes valentineiBatrisodes wartoniBdellodrilus illuminatusPhreatodrobia rotunda – Beaked cavesnailPseudanophthalmus beakleyi – Beakley’s Cave BeetleCaecidotea beattyi – Beatty’s Groundwater IsopodOreonetides beattyi – Beatty’s Sheetweb Cave SpiderPseudanophthalmus major – Beaver Cave BeetleBelba bulbipedataBembidion affineBembidion lacunarium – Greenbrier Riverbank Ground BeetleBembidion nigripesBembidion texanum – Simple Riverbank Ground BeetlePseudanophthalmus bendermani – Benderman’s Cave BeetleCaecidotea carolinensis – Bennett’s Mill Cave IsopodCambarus aculabrum – Benton County Cave CrayfishGyrinophilus gulolineatus – Berry cave salamanderBertkauia crosbyanaBibio xanthopus – Yellow-Footed March FlyBicornucandona fineganensisStygobromus bifurcatus – Bifurcated Cave AmphipodProcambarus horsti – Big Blue Spring Cave CrayfishProcambarus delicatus – Bigcheek Cave CrayfishSphalloplana subtilis – Biggers Cave FlatwormStygobromus biggersi – Biggers’ Cave AmphipodBimastos heimburgeriBimastos longicinctusBimastos rubidus – Gilt-TailBimastos tumidusBimastos zetekiBishopella jonesiBishopella laciniosa – Bishop’s HarvestmanBishopella mariannaBittacomorpha clavipes – Phantom Crane FlyBlaberus giganteus – Caribbean Giant CockroachPygmarrhopalites ater – Black Medusa Cave SpringtailPseudotremia blacki – Black’s Cave MillipedTrigenotyla blacki – Black’s cave millipedeBlackburnia aaaeBlackburnia howarthiEurycea robusta – Blanco Blind SalamanderBlancosoma scaturgoBlaniulus guttulatus – Snake MillepedeBlarina brevicaudaBlarina carolinensis – Southern Short-Tailed ShrewBleptina caradrinalis – Bent-Winged OwletGlyphyalinia pecki – Blind GlyphStygobromus blinni – Blinn’s Cave AmphipodPseudanophthalmus ventus – Blowing Cave BeetleStygobromus spinosus – Blue Ridge Cave AmphipodPseudotremia indianae – Blue River Cave MillipedeDiacyclops conversus – Blue River Groundwater CopepodBodo minimusBoisea trivittata – Boxelder BugPseudanophthalmus audax – Bold Cave BeetleBolitophila cinereaBolitophila hybridaBolitophila perlataConotyla bollmani – Bollman’s Cave MillipedeTexella reyesi – Bone Cave HarvestmanStygobromus limbus – Border Cave AmphipodBos taurus – Taurine CattleBosmina longirostris – Common Long-Nosed WaterfleaStygobromus boultoni – Boulton’s Cave AmphipodStygobromus bowmani – Bowman’s Cave AmphipodBrachinus fumans – American Bombardier BeetleBrachycybe lecontiiBrachycybe petasataBrachycybe productaBrachydesmus superus – Compact Flat-Backed MillipedeBrackenridgia cavernarumBrackenridgia reddelliBradycellus rupestris – Rock-Dwelling Harp Ground BeetleBradysia forficulataBrathinus nitidusBremia caricisCalileptoneta briggsi – Briggs’ Cave SpiderCambarus setosus – Bristly Cave CrayfishBryocamptus newyorkensisBryocamptus nivalisSphalloplana buchanani – Buchanan’s Cave FlatwormApochthonius hobbsi – Buckskin Cave PseudoscorpionPseudotremia burnsorum – Burn’s Cave MillipedCaconemobius albusCaconemobius paralbusCaconemobius uukuCaecidotea acuticarpaCaecidotea adentaCaecidotea alabamensisCaecidotea ancylaCaecidotea antricolaCaecidotea bilineataCaecidotea catachaetusCaecidotea circulusCaecidotea cyrtorhynchusCaecidotea dauphinaCaecidotea dimorphaCaecidotea extensolingualaCaecidotea fisherorumCaecidotea fonticulusCaecidotea leslieiCaecidotea mackiniCaecidotea metcalfiCaecidotea ornatusCaecidotea packardiCaecidotea paurotrigonaCaecidotea reddelliCaecidotea scyphusCaecidotea simoniniCaecidotea simulatorCaecidotea sinuncusCaecidotea spatulataCaecidotea teresaeCaecidotea tridentataCalasellus californicusCalasellus longusCalathus opaculusCalifobathynella noodtiCalifobathynella teuchertiSphalloplana californica – California Cave FlatwormCalifornibathynella californicaPseudotremia callae – Call’s Cave MillipedCallinectes sapidus – American Blue CrabCalliphora terraenovaeCalliphora vicinaCalliphora vomitoria – Orange-Bearded BluebottleCallobius bennetti – Bennett’s LaceweaverCaloptilia alnivorella – Alder LeafminerCalymmaria persicaCalymmaria virginicaCambala annulata – Violet Ridged MillipedeCambala hubrichtiCambala minor – Amber Ridged MillipedeCambala ochraCambala reddelliCambala speobiaCambarincola alienusCambarincola demissusCambarincola dubiusCambarincola fallaxCambarincola heterognathusCambarincola holostomusCambarincola leoniCambarincola leptadenusCambarincola manniCambarincola marthaeCambarincola philadelphicusCambarincola sheltensisCambarincola steevesiCambarincola susanaeCambarincola vitreaCambarus bartonii – Appalachian Brook CrayfishCambarus hubbsi – Hubbs’ CrayfishCambarus latimanus – Variable CrayfishCambarus parvoculus – Mountain Midget CrayfishCambarus striatus – Ambiguous CrayfishCambarus tenebrosus – Cavespring CrayfishCamponotus sayi – Say’s Carpenter AntCampostoma anomalum – Central StonerollerCampostoma oligolepis – Largescale StonerollerFaxonius stygocaneyi – Caney Mountain Cave CrayfishCanis dirus – Dire WolfCanis familiaris – Domestic DogCanis latrans – CoyoteCanis rufus – Red WolfCaecidotea cannula – Cannulate Cave IsopodCanthon imitatorStygobromus sextarius – Capital Area Groundwater AmphipodCarcinophora americanaCarebara urichiAphrastochthonius similis – Carlow’s Cave PseudoscorpionCarnarimelita janstockiStygobromus carolinensis – Carolina Seep AmphipodPygmarrhopalites carolynae – Carolyn’s Cave SpringtailCarphophis amoenus – Common WormsnakeCartodere constricta – Plaster BeetleCarychium clappi – Appalachian ThornCarychium exile – Ice ThornCarychium mexicanum – Southern ThornCarychium nannodes – File ThornCarychium riparium – Floodplain ThornStygobromus dejectus – Cascade Cave AmphipodStygobromus canadensis – Castleguard Cave AmphipodCastor canadensis – American BeaverCathartes aura – Turkey VulturePseudanophthalmus catherinae – Catherine’s Cave BeetleCatopocerus alabamaeCatopocerus appalachianusCatopocerus jonesiCatops gratiosusCatostomus commersonii – White SuckerCauseyella causeyaeCauseyella dendropus – Causeyella Cave MillipedeCauseyella youngsteadtorumCavaticovelia aaaBactrurus speleopolis – Cave City Cave AmphipodSpelobia tenebrarum – Cave dung flyPhysella spelunca – Cave PhysaIslandiana cavealis – Cave Sheet-web SpiderIslandiana lewisi – cave sheet-web spiderNesticus jonesi – Cave Spring Cave SpiderCarychium stygium – Cave thornCavenderia aureostipesIslandiana speophila – Cavern Sheet-web SpiderCavernicola pilosa – BarbeiroStygobromus caecilius – Cecil Groundwater AmphipodCemophora coccinea – Scarlet SnakeStygobromus exilis – Central Kentucky Cave AmphipodCentromerus cornupalpis – Eastern Spurred SheetweaverCentromerus denticulatusCentromerus latidensCentromerus tennapexCentropyxis aculeataCeraticelus fissicepsCeraticelus minutusCeratophysella boletivora – SpringtailCeratophysella brevisCeratophysella denticulataCeratophysella engadinensisCeratozetes gracilisPseudotremia cerberus – Cerberus Cave MillipedCerobasis guestfalica – Book LiceCeuthophilus brevipes – Short-Legged Camel CricketCeuthophilus carlsbadensisCeuthophilus conicaudusCeuthophilus elegansCeuthophilus ensiferCeuthophilus gracilipes – Slender-Legged Camel CricketCeuthophilus isletaeCeuthophilus latens – Black-Sided Camel CricketCeuthophilus latibuliCeuthophilus longipesCeuthophilus maculatus – Spotted Camel CricketCeuthophilus pallidipesCeuthophilus palmeriCeuthophilus seclususCeuthophilus stygius – Cave Camel CricketCeuthophilus virgatipesCeuthophilus williamsoniChaetaspis attenuatusChaetaspis debilisChaetaspis fragilisChaetaspis mollisChaetogaster diaphanus – Aquatic Oligochaete WormSphalloplana chandleri – Chandler’s Cave FlatwormChaoborus albatusChauliodes pectinicornis – Summer FishflyCheiracanthium inclusum – Yellow Sac SpiderCheiridium reyesiChelydra serpentina – North American Snapping TurtleCherokia georgianaCheumatopsyche minusculaChilodonella caudataChinquipellobunus madlaeChinquipellobunus russelliChionea scitaChironomus decorusChironomus plumosus – Chironome PlumosusChiroptonyssus robustipesChitrella archeriChitrella cavicolaChitrella elliottiChitrella majorChitrella superbaChitrella welbourniChitrellina chiricahuaeChlaenius aestivus – Summer Harp Ground BeetleChlamydotheca texasiensisChoctella cumminsiPseudosinella christianseni – Christiansen’s Cave SpringtailChrosomus erythrogaster – Southern Redbelly DaceChrysops univittatus – One-Striped Deer FlyChthonius cryptusChthonius paludisCicurina arcataCicurina arcuataCicurina banderaCicurina barriCicurina breviariaCicurina brevis – Small-Eared MeshweaverCicurina browniCicurina brunsiCicurina bullisCicurina buwataCicurina caligaCicurina cavealisCicurina cavernaCicurina coryelliCicurina delrioCicurina ezelliCicurina grutaCicurina holsingeriCicurina hoodensisCicurina joyaCicurina loftiniCicurina macheteCicurina mckenzieiCicurina medinaCicurina menardiaCicurina minimaCicurina mirificaCicurina mixmasterCicurina neovesperaCicurina obscuraCicurina orelliaCicurina pabloCicurina pallidaCicurina pasturaCicurina pateiCicurina placidaCicurina platypusCicurina porteriCicurina puentecillaCicurina rainesiCicurina reclusaCicurina reddelliCicurina russelliCicurina sansabaCicurina selectaCicurina serenaCicurina sheariCicurina sprouseiCicurina stowersiCicurina suttoniCicurina travisaeCicurina troglobiaCicurina ubickiCicurina uvaldeCicurina variansCicurina veneficaCicurina viboraCicurina watersiCicurina wiltoniCirolanides texensisCirolanides wassenichaeCladura flavoferrugineaStygobromus clantoni – Clanton’s Cave AmphipodPseudotremia nefanda – Clark Cave MillipedePygmarrhopalites clarus – Clarus Cave SpringtailCleidogona baroquaCleidogona crucisCleidogona crystallinaCleidogona hoffmaniCleidogona mayapecCleidogona peckiCleidogona unitaClethrionomys gapperiPseudanophthalmus caecus – Clifton Cave BeetleCaecidotea barri – Clifton Cave IsopodClimacia areolarisCalicina cloughensis – Clough Cave HarvestmanPseudanophthalmus gracilis – Clover Hollow Cave BeetleMexistenasellus coahuila – Coahuila Groundwater IsopodProcambarus leitheuseri – Coastal Lowland Cave CrayfishCoecobrya kukaeCoecobrya luaCoecobrya nupaCoecobrya tenebricosaBatrisodes cryptotexanus – Coffin Cave Mold BeetleTexella cokendolpheri – Cokendolpher Cave HarvestmanColacium vesiculosumPseudanophthalmus colemanensis – Coleman Cave BeetleColoradesmus aquiliensisColoradesmus beckleyiColoradesmus hopkinsaeColoradesmus manitouColoradesmus warneriStygobromus coloradensis – Colorado Cave AmphipodColuber constrictor – North American RacerColumba livia – Common PigeonColumbasellus acheronColusa illectaEurycea tridentifera – Comal Blind SalamanderComaldessus stygius – Comal Springs Diving BeetleStygoparnus comalensis – Comal Springs Dryopid BeetleComalcandona mixoniComalcandona tressleriConasellus burkensisConasellus communis – Eastern WaterslaterConasellus forbesi – Forbes’ WaterslaterConasellus jeffersoniConasellus kenkiConasellus phreaticusConasellus washingtoniPseudanophthalmus abditus – Concealed Cave BeetleCondeicampa langeiConicera similisConosoma velocipesConotyla blakeiConotyla vistaStygobromus conradi – Conrad’s Cave AmphipodPseudotremia cookorum – Cook’s Cave MillipedLitocampa cookei – Cooke’s Cave DipluranStygobromus cooperi – Cooper’s Cave AmphipodCopestylum vesicularium – Iridescent Bromeliad FlyCoquillettidia perturbans – Cattail MosquitoCoragyps atratus – Black VultureCoras juvenilisCoras lamellosusCoras taugynusCorbicula fluminea – Asian Basket ClamCordylophora caspia – Ponto-Caspian Freshwater HydroidCorydalus cornutus – DobsonflyCorynorhinus rafinesquii – Eastern Big-Eared BatCorynorhinus townsendii – Pacific Townsend’s Big-Eared BatCottus bairdii – Mottled SculpinCottus carolinae – Banded SculpinStygobromus cowani – Cowan’s Cave AmphipodStygobromus estesi – Craig County Cave AmphipodCrangonyx anomalus – Large Male CrangonyctidCrangonyx baculispina – Lancaster County AmphipodCrangonyx bousfieldiCrangonyx caecusCrangonyx castellanumCrangonyx consimilisCrangonyx cooperiCrangonyx floridanus – Florida CrangonyctidCrangonyx forbesi – Forbes CrangonyctidCrangonyx gracilis – Northern Lake CrangonyctidCrangonyx insolitusCrangonyx longidactylusCrangonyx minor – Small Stream CrangonyctidCrangonyx montanusCrangonyx obliquus – Oblique-Hand CrangonyctidCrangonyx palustrisCrangonyx pseudogracilis – Northern River CrangonyctidCrangonyx richmondensis – Alpine Lake CrangonyctidCrangonyx rivularis – Ontario Stream CrangonyctidCrangonyx setodactylus – Hairy-Fingered CrangonyctidCrangonyx shoemakeri – Shoemaker CrangonyctidCrangonyx specusCreaserinus fodiens – Digger CrayfishCreophilus maxillosus – Hairy Rove BeetleCrosbycus goodnightiCrosbyella distinctaCrosbyella roeweriCrosbyella spinturnixPseudanophthalmus intersectus – Crossroads Cave BeetleCrotalus adamanteus – Eastern Diamond-Backed RattlesnakeCrotalus horridus – Timber RattlesnakeCryptachaea porteri – Cobweb SpidersCryptachaea rupicolaCryptobranchus alleganiensis – HellbenderCryptocreagris desticaCryptocreagris steinmanniCryptophagus valensCtenophthalmus pseudagyrtesCtenus captiosus – Florida False Wolf SpiderPseudanophthalmus simulans – Cub Run Cave BeetleCulex erraticusCulex pipiens – Northern House MosquitoCulex restuans – White-Dotted MosquitoCulex territans – Northern Frog-Biting MosquitoCulicoides paraensisCuliseta impatiens – Impatient MosquitoStygobromus culveri – Culver’s Cave AmphipodSphalloplana culveri – Culver’s Cave FlatwormPseudotremia culveri – Culver’s Cave MillipedStygobromus cumberlandus – Cumberland Cave AmphipodBactrurus angulus – Cumberland Gap Cave AmphipodPseudanophthalmus hirsutus – Cumberland Gap Cave BeetleCaecidotea cumberlandensis – Cumberland Gap Cave IsopodOrconectes barri – Cumberland Plateau Cave CrayfishStygobromus curroae – Curro’s Cave AmphipodCybaeopsis pantoplaCybaeopsis tibialisCybaeus giganteusCybaeus patritusCyclidium glaucomaCyclocosmia truncata – Ravine Trapdoor SpiderCyclocypris sharpeiCyclops cavernarumCyclops leariiCyclosa conica – Cone-Shaped OrbweaverCyclotrachelus fucatusCyclotrachelus sodalis – Blue-Tinged Harp Ground BeetleCylindrodesmus hirsutusCylindroiulus arborumCylisticus convexus – Curly WoodlouseCyllopsis gemma – Gemmed SatyrCyphoderus inaequalisCyphoderus similisCypria lacrimaCypridopsis vidua – Cypris Veuve (La)Cyprinella spiloptera – Spotfin ShinerCyprinodon diabolis – Devil’s Hole PupfishCyprinus carpio – Eurasian CarpCyrtodesmus archimedesDactylocythere arcuataDactylocythere prionataDactylocythere steevesiDactylocythere ungulataDactylolabis hudsonicaDactylolabis montanaDarlingtonea kentuckensisDarwinula stevensoniDasycerus nikwasiDasypus novemcinctus – Nine-Banded ArmadilloPseudanophthalmus deceptivus – Deceptive Cave BeetleCambarus subterraneus – Delaware County Cave CrayfishPseudanophthalmus delicatus – Delicate Cave BeetleDemogorgonichthys arcanus – Demon CavefishDendrobaena octaedra – Octagonal-Tail WormDendrocoelopsis americanaDendronucleata americanaDermacentor variabilis – American Dog TickDeroceras laeve – Meadow SlugDeroceras reticulatum – Gray FieldslugDerops divalisDesmognathus abditus – Cumberland Dusky SalamanderDesmognathus brimleyorum – Ouachita Dusky SalamanderDesmognathus conanti – Spotted Dusky SalamanderDesmognathus fuscus – Northern Dusky SalamanderDesmognathus gvnigeusgwotli – Cherokee Blackbelly SalamanderDesmognathus monticola – Seal SalamanderDesmognathus ocoee – Ocoee SalamanderDesoria trispinataDesoria truncataDesoria violaceaDeuteraphorura janaPseudotremia inexpectata – Devault’s Cave MillipedStygobromus hadenoecus – Devil’s Sinkhole AmphipodDiacyclops alabamensisDiacyclops bicuspidatus – DamhopsDiacyclops chrisaeDiacyclops clandestinusDiacyclops crassicaudis – KompakthopsDiacyclops jeanneliDiacyclops navusDiacyclops nearcticusDiacyclops nikolasarburniDiacyclops sororumDiadophis punctatus – Ring-Necked SnakeDichogaster affinis – EarthwormDichogaster bolaui – EarthwormStygobromus dicksoni – Dickson cave stygobromidDicranomyia humidicolaDicranomyia stultaDicranota flaveolaDicrotendipes neomodestusDictyostelium giganteumDictyostelium mucoroidesDictyostelium purpureumDictyostelium sphaerocephalumDidelphis virginiana – Virginia OpossumDifflugia globulosaDineutus assimilisDinocheirus astutusDinocheirus cavicolaDiplectrona marianaeDiplocardia carolinianaDiplocardia singularisDiplocardia verrucosaPhreatodrobia plana – Disc cavesnailDiscourella dubiosaDiscus catskillensis – Angular DiscDiscus macclintocki – Iowa Pleistocene SnailDiscus nigrimontanus – Black Mountain DiscDiscus patulus – Domed DiscDiscus whitneyi – Forest DiscDissochaetus oblitusDocosia paradichroaDohrniphora perplexaDolichopeza dorsalisDolichopeza tridenticulataDolichopeza venosaDolichopeza walleyiDolichopus fulvipesDolichopus penicillatusDolomedes scriptus – Dock SpiderDolomedes tenebrosus – Dark Fishing SpiderDolomedes vittatus – Banded Fishing SpiderPhreatodrobia nugax – Domed CavesnailMegacyclops donnaldsoni – Donaldson’s Cave CopepodHamohalacarus subterraneus – Donaldson’s Cave Water MiteDonnaldsoncythere hiwasseensisDonnaldsoncythere tuberosaDorosoma cepedianum – American Gizzard ShadDorypteryx domestica – Cave BarklouseStygobromus doughertyensis – Dougherty Plain Cave AmphipodCambarus cryptodytes – Dougherty Plain Cave CrayfishPseudotremia douglasi – Douglas’ Cave MillipedDrosophila funebris – AzijnvliegPseudanophthalmus montanus – Dry Fork Valley Cave BeetleApochthonius paucispinosus – Dry Fork Valley Cave PseudoscorpionDryobius sexnotatus – Maple DryobiusDryomyza anilis – Hooded DryomyzaDryophytes chrysoscelis – Cope’s Gray TreefrogDryophytes cinereus – Green TreefrogDryophytes gratiosus – Barking TreefrogDryophytes squirellus – Squirrel TreefrogDryophytes versicolor – Gray TreefrogPseudanophthalmus tullahoma – Duck River Cave BeetleDugesia tigrinaCaecidotea dunlaporum – Dunlap’s Groundwater IsopodDuvalius jurecekiDuvalius lombardiiPseudanophthalmus acherontis – Echo Cave BeetleEclipidrilus palustris – Aquatic Oligochaete WormHaideoporus texanus – Edwards Aquifer Diving BeetleEidmannella bullataEidmannella delicataEidmannella nasutaEidmannella pallida – Pallid Cave SpiderEidmannella reclusaEidmannella rostrataEidmannella tuckeriEisenia fetida – BrandlingEisenia roseaEiseniella tetraedra – Square-Tailed WormEisenoides carolinensis – Carolina WormEisenoides lonnbergiElaphoidella bidensElaphropus ferrugineusElaphropus incurvusElaver excepta – White Sac SpiderEleodes eschscholtzii – Pinacate De EschscholtzEleodes micropsEleutherodactylus planirostris – Greenhouse FrogElimia athearni – Knobby ElimiaElimia clenchi – Slackwater ElimiaElimia comalensis – Balcones ElimiaElimia curvicostataElimia proxima – Sprite ElimiaPseudanophthalmus pusio – Ellet Valley Cave BeetlePseudotremia cavernarum – Ellett Valley Pseudotremia MillipedeStygobromus elliotti – Elliott’s Cave AmphipodElliotta howarthiEmblyna florensEmpherozoster antaeusFissilicreagris imperialis – Empire Cave PseudoscorpionNeochthonius imperialis – Empire Cave PseudoscorpionPseudanophthalmus englehardti – Englehardt’s Cave BeetleFontigens antroecetes – Enigmatic ghostsnailEnoplognatha ovata – Common Candy-Striped SpiderEnterobryus oxidiEntomobrya bicolorEntomobrya confusaEntomobrya intermediaEntomobrya nivalisEntomobrya troglodytesEntomobryoides purpurascens – SpringtailEphemera simulans – Brown DrakeStygobromus ephemerus – Ephemeral Cave AmphipodEphippiochthonius tetrachelatus – Dimple-Clawed ChthonidEphippiochthonius virginicusEpicharis rusticaEpitedia cavernicolaEpitedia wenmanni – Deermice FleaEptesicus fuscus – Big Brown BatEquus caballus – Domestic HorseErebomaster flavescens – Golden Cave HarvestmanEremidrilus allegheniensisEremidrilus coyoteEremidrilus elegansEremidrilus feliniEremidrilus parvithecaEremidrilus ritocsiEremidrilus samacosErethizon dorsatumErgodesmus remingtoniErichsonius nanusErichsonius patella – Kneecap Rove BeetleErigone autumnalis – Autumn Money SpiderErigone infernalisErigone stygiusErpobdella dubiaPseudosinella espana – Espana Cave SpringtailEtheostoma artesiae – Redspot DarterEtheostoma caeruleum – Rainbow DarterEtheostoma duryi – Black DarterEtheostoma flabellare – Fantail DarterEtheostoma swaini – Gulf DarterEthopolys bipunctatusEuborellia annulipes – Ring-Legged EarwigEuborellia antoniEucyclops agilisEucyclops bondiEucyclops elegansEucyclops speratus – FintagghalehopsEuglandina rosea – Rosy Predator SnailEuglesa casertana – Caserta Pea MusselEuhadenoecus fragilis – Tawneys Cave CricketEuhadenoecus insolitus – Highland Rim Crevice CricketEuhadenoecus puteanus – Allegheny Crevice CricketEupeodes volucris – Large-Tailed AphideaterEurycea bislineataEurycea chisholmensis – Salado SalamanderEurycea cirrigera – Southern Two-Lined SalamanderEurycea guttolineata – Three-Lined SalamanderEurycea longicauda – Long-Tailed SalamanderEurycea lucifuga – Cave SalamanderEurycea melanopleura – Dark-Sided SalamanderEurycea multiplicata – Many-Ribbed SalamanderEurycea pterophila – Fern Bank SalamanderEurycea wilderae – Blue Ridge Two-Lined SalamanderEuryurus erythropygosEuryurus evidesEuryurus leachii – Log LurkerEuschoengastia pipistrelliEuschoengastia staffordiEustala anastera – Orb WeaverEustilicus condeiEutrichota affinisEutrichota lipsiaEutrombicula alfreddugesiExechia attritaExechia auxiliariaExechia bifurcataExechia obediensExechia shawiExechia umbraticaExechiopsis nugaxPseudanophthalmus exoticus – Exotic Cave BeetleStygobromus flagellatus – Ezell’s Cave AmphipodFaiditus cancellatusBactrurus pseudomucronatus – False Sword-tailed Cave AmphipodFaxonius neglectus – Ringed CrayfishFaxonius rusticus – Rusty CrayfishFaxonius validus – Powerful CrayfishFaxonius virilis – Virile CrayfishFelis rufusStygobromus felleri – Feller’s Groundwater AmphipodFeralia jocosa – Jocose SallowStygobromus fergusoni – Ferguson’s Cave AmphipodPseudotremia fergusoni – Ferguson’s Cave MillipedCaecidotea filicispeluncae – Fern Cave IsopodLitocampa fieldingae – Fielding’s Cave DipluranStygobromus finleyi – Finley’s Cave AmphipodPseudotremia piscator – Fisher Cave MillipedFlabellorhagidia peckiPhreatodrobia micra – Flattened CavesnailCrangonyx parhobbsi – Florida Big Bend Cave AmphipodCrangonyx grandimanus – Florida Cave AmphipodCaecidotea hobbsi – Florida Cave IsopodMexistenasellus floridensis – Florida Cave IsopodStygobromus floridanus – Florida Panhandle Cave AmphipodFolsomia bisetosaFolsomia candida – SpringtailFolsomia elongataFolsomia fimetaria – SpringtailFolsomia nivalisFolsomia peniculaFolsomia primaFolsomia stella – SpringtailFolsomia variabilisFolsomides americanusFontigens aldrichi – Hoosier SpringsnailFontigens orolibas – Blue Ridge SpringsnailForbesichthys agassizii – Spring CavefishForbesichthys papilliferusForcipomyia pholetorPseudosinella fonsa – Fountain Cave SpringtailTyphlogastrura fousheensis – Foushee Cave SpringtailAmnicola cora – Foushee CavesnailFoveacheles auriculariaFoveacheles goffiFoveacheles tenorioaeFoveacheles titanicaFoveacheles tuktoyaktukensisPseudanophthalmus fowlerae – Fowler’s Cave BeetleStygobromus franzi – Franz’s Cave AmphipodCaecidotea franzi – Franz’s Cave IsopodStygobromus amicus – Friendly Cave AmphipodFriesea claviseta – Bark-TretornspringhaleCaecidotea rotunda – Frost Cave IsopodFumonelix wetherbyi – Clifty CovertFundulus notatus – Blackstripe TopminnowCaecidotea fustis – Fustis Cave IsopodGabrius microphthalmusGaeolaelaps queenslandicusGalba modicella – Rock FossariaGalerita bicolorGalerita leconteiBanksula galilei – Galile’s Cave HarvestmanStygobromus gallawayae – Gallaway’s Cave AmphipodGallus gallus – Red JunglefowlGalumna alata – MiteGambusia affinis – Western MosquitofishGambusia holbrooki – Eastern MosquitofishGammarus cohabitusGammarus limnaeusGammarus minusGammarus minus tenuipesGammarus pseudolimnaeus – Northern Spring AmphipodGammarus troglophilusPseudosinella certa – Gandy Creek Cave SpringtailPseudanophthalmus hortulanus – Garden Cave BeetlePseudotremia garlandae – Garland’s Cave MillipedePseudanophthalmus horni – Garman’s Cave BeetleGastrellarius honestusGastrocopta abbreviata – Plains SnaggletoothGastrocopta armifera – Armed SnaggletoothGastrocopta contracta – Bottleneck SnaggletoothGastrocopta pentodon – Comb SnaggletoothGastrocopta similis – Great Lakes SnaggletoothGastrodonta interna – Brown BellytoothGastrophryne carolinensis – Eastern Narrow-Mouthed ToadGastrophryne olivacea – Great Plains Narrow-Mouthed ToadGaucelmus augustinusGaucelmus cavernicolaGaucelmus strinatiiGaucelmus tropicusGennadota puberulaGeocentrophora cavernicolaGeocolus caecusGeodromicus brunneusGeomys bursarius – Plains Pocket GopherEurycea wallacei – Georgia Blind SalamanderPseudanophthalmus georgiae – Georgia Cave BeetleSphalloplana georgiana – Georgia Cave FlatwormNesticus georgia – Georgia Cave SpiderPseudotremia lusciosa – Germany Valley Cave MillipedeKleptochthonius gertschi – Gertsch’s Cave PseudoscorpionOrconectes inermis – Ghost CrayfishComalcandona gibsoni – Gibson’s Groundwater OstracodGirardia dorotocephala – FlatwormGlacicavicola bathyscioidesStygobromus glacialis – Glacier National Park Cave AmphipodGlobocreagris nigrescensGlyphyalinia carolinensis – Spiral Mountain GlyphGlyphyalinia cryptomphala – Thin GlyphGlyphyalinia indentata – Carved GlyphGlyphyalinia latebricola – Stone GlyphGlyphyalinia lewisiana – Pale GlyphGlyphyalinia luticola – Furrowed GlyphGlyphyalinia praecox – Brilliant GlyphGlyphyalinia rhoadsi – Sculpted GlyphGlyphyalinia sculptilis – Suborb GlyphGlyphyalinia wheatleyi – Bright GlyphGnathonaroides pedalisGnophomyia tristissimaGopherus polyphemus – Gopher TortoiseGordionus lineatusCicurina vespera – Government Canyon Bat Cave MeshweaverTayshaneta microps – Government Canyon Bat Cave SpiderStygobromus gradyi – Grady’s Cave AmphipodStygobromus grahami – Graham’s Cave AmphipodLarca cavicola – Grand Canyon Cave PseudoscorpionZygonopus weyeriensis – Grand Caverns Blind Cave MillipedeGrandidierella palamaPseudanophthalmus jonesi – Grassy Cove Cave BeetleNesticus dilutus – Grassy Creek Cave SpiderKleptochthonius griseomanus – Gray-handed Cave PseudoscorpionMicrocreagris grandis – Great Basin Cave PseudoscorpionPseudanophthalmus pholeter – Greater Adams Cave BeetleStygobromus emarginatus – Greenbrier Cave AmphipodCambarus nerterius – Greenbrier Cave CrayfishFontigens turritella – Greenbrier CavesnailPseudotremia fulgida – Greenbrier Valley Cave MillipedeKleptochthonius henroti – Greenbrier Valley Cave PseudoscorpionStygobromus sparsus – Gregory Cave AmphipodCottus specus – Grotto sculpinAphrastochthonius grubbsi – Grubb’s Cave PseudoscorpionBanksula grubbsi – Grubbs’ Cave HarvestmanLarca guadalupensis – Guadalupe Cave PseudoscorpionHesperochernes occidentalis – Guano PseudoscorpionGymnophora luteiventrisGyraulus parvus – Ash GyroGyrinophilus porphyriticus – Spring SalamanderHadenoecus barri – Barr’s Cave CricketHadenoecus cumberlandicus – Cumberland Cave CricketHadenoecus jonesi – Limrock Blowing Cave CricketHadenoecus opilionoidesHadenoecus subterraneus – Mammoth Cave CricketHalocaridina palahemoHalocaridina rubraHaplophthalmus danicus – Spurred RidgebackHaplotaxis brinkhurstiHaplotaxis gordioides – Haplotaxid WormHaplotrema concavum – Gray-Foot LancetoothStygobromus harai – Hara’s Cave AmphipodHarpalus pennsylvanicusPseudotremia jaculohamatum – Harpoon Cave MillipedPtomaphagus hatchi – Hatch’s Cave Fungus BeetleHawaiia minuscula – Minute GemHawaiioscia micropthalmaHawaiioscia paeninsulaeHawaiioscia parvituberculataHawaiioscia rotundataHawinella lavaStygobromus hayi – Hay’s Spring AmphipodHeleomyza brachypternaHeleomyza serrataHelicina orbiculataHelicodiscus fimbriatus – Fringed CoilHelicodiscus hadenoecus – Cricket CoilHelicodiscus inermisHelicodiscus multidens – Twilight CoilHelicodiscus notius – Tight CoilHelicodiscus parallelus – Compound CoilHelicodiscus punctatellusHelicodiscus shimeki – Temperate CoilHelius flavipesCambarus zophonastes – Hell Creek Cave CrayfishTyphlogastrura helleri – Heller Cave SpringtailHelodrilus foetidusHelodrilus tenuisBatrisodes venyivi – Helotes Cave Mold BeetleHemidactylium scutatum – Four-Toed SalamanderHeminothrus targioniiHemiscolopendra marginata – Eastern Bark CentipedeHemisotoma thermophilaHemitremia flammea – Flame ChubPseudobaicalasellus henroti – Henrot’s Cave IsopodHentziectypus globosus – Fingered CobweaverStygobromus herbsti – Herbst’s Cave AmphipodHesperochernes bradybaughiHesperonemastoma inopsHesperonemastoma pallidimaculosumHesperonemastoma smilaxHeteraphorura subtenuisHeterelmis comalensis – Comal Springs Riffle BeetleHeteromurus nitidusHeterophrys glabrescensHexabathynella hessleriHexabathynella muliebrisHexabathynella otayanaHexabathynella virginiaeHibana gracilis – Garden Ghost SpiderHickmania troglodytes – Tasmanian Cave SpiderPseudanophthalmus conditus – Hidden Cave BeetleFontigens cryptica – Hidden springsnailPhreatodrobia punctata – High-hat cavesnailPseudosinella hirsuta – Hirsute Cave SpringtailHirundo rustica – Barn SwallowCrangonyx hobbsi – Hobb’s Cave AmphipodHobbsinella edwardensisHobbsinella gunnisonensisOncopodura hoffi – Hoff’s Cave SpringtailStygobromus hoffmani – Hoffman’s Cave AmphipodPseudanophthalmus hoffmani – Hoffman’s Cave BeetlePseudotremia hoffmani – Hoffman’s Cave MillipedeSinella hoffmani – Hoffman’s Cave SpringtailSphalloplana hoffmasteri – Hoffmaster’s Cave FlatwormHogna frondicola – Forest Wolf SpiderPhagocata holleri – Holler’s Cave FlatwormPseudotremia hollidayi – Holliday’s Cave MillipedHelicodiscus notius specus – Hollow CoilGlyphyalinia specus – Hollow glyphStygobromus holsingeri – Holsinger’s Cave AmphipodPseudanophthalmus holsingeri – Holsinger’s Cave BeetleSphalloplana holsingeri – Holsinger’s Cave FlatwormPseudobaicalasellus holsingeri – Holsinger’s Cave IsopodPseudotremia johnholsingeri – Holsinger’s Cave MillipedHesperochernes holsingeri – Holsinger’s Cave PseudoscorpionNesticus holsingeri – Holsinger’s Cave SpiderHolsingerius samacosHomaeotarsus bicolorHomaeotarsus carolinusHomidia socia – Three-Lined SpringtailAmblyopsis hoosieri – Hoosier CavefishHorologion hubbardiHorreolanus orphanusHowaia mogera – KasholenspinCaconemobius howarthi – Howarth’s Cave CricketPseudanophthalmus hubbardi – Hubbard’s Cave BeetlePseudotremia hubbardi – Hubbard’s Cave MillipedPseudanophthalmus hubrichti – Hubricht’s Cave BeetleSphalloplana hubrichti – Hubricht’s Cave FlatwormAllocrangonyx hubrichti – Hubricht’s Long-tailed Cave AmphipodPhreatodrobia conica – Hueco CavesnailStygobromus hubbardi – Hupp’s Hill Cave AmphipodPseudanophthalmus parvicollis – Hupps Hill Cave BeetleHyalella azteca – Mexican Freshwater ShrimpHyalella cretaeHygrotus sayi – Say’s Diving BeetleHylarana grandocula – Big-Eyed FrogHypena scabra – Green CloverwormHypentelium nigricans – Northern Hog SuckerHypoaspis angustaHypochilus bonnetiHypochilus coyleiHypochilus gertschiHypochilus pococki – Pocock’s Lampshade-Web SpiderHypochilus thorelli – Thorell’s Lampshade-Web SpiderHypogastrura antraHypogastrura assimilis – Mark-TornspringhaleHypogastrura maturaHypogastrura nothaHypogastrura purpurescens – Purpur-TornspringhaleHypogastrura spartaHypogastrura tullbergiStygobromus hyporheicus – Hyporheic AmphipodPseudanophthalmus frigidus – Icebox Cave BeetleIctalurus punctatus – Channel CatfishIctidomys tridecemlineatus – Thirteen-Lined Ground SquirrelIctiobus bubalus – Smallmouth BuffaloIdagona jasperiIdagona lehmanensisStygobromus idahoensis – Idaho Groundwater AmphipodIdagona westcotti – Idaho Lave Tube MillipedeIllacme tobiniGammarus acherondytes – Illinois Cave AmphipodPseudanophthalmus illinoisensis – Illinois Cave BeetleStygobromus imperialis – Imperial Cave AmphipodPseudobaicalasellus incurvus – Incurved Cave IsopodPseudanophthalmus tiresias – Indian Grave Point Cave BeetleCrangonyx indianensis – Indiana Cave AmphipodApochthonius indianensis – Indiana Cave PseudoscorpionDiacyclops indianensis – Indiana Groundwater CopepodRheocyclops indiana – Indiana Groundwater CopepodInflectarius inflectus – ShagreenInflectarius rugeli – Deep-Tooth ShagreenBatrisodes texanus – Inner Space Cavern Mold BeetlePseudanophthalmus inquisitor – Inquirer Cave BeetlePseudanophthalmus intermedius – Intermediate Cave BeetleStygobromus interstitialis – Interstitial AmphipodIolania frankanstoneiStygobromus iowae – Iowa Cave AmphipodIslandiana flaveola – Unequal Whiskered Money SpiderIslandiana mumaIslandiana princeps – Eastern Whiskered Money SpiderIslandiana unicornisIsotoma andreiIsotoma gelidaIsotoma tarivaIsotoma trispinataIsotoma viridis – EngspringhaleIsotomiella minor – SpringtailSpeodesmus ivyi – Ivy’s Cave MillipedeIxodes conepatiIxodes cookei – American Castor Bean TickIxodes scapularis – Black Legged TickIxodes woodiCrangonyx manubrium – Jackson County Cave AmphipodJalysus wickhami – Spined Stilt BugStygobromus abditus – James Cave AmphipodPseudocandona jeanneli – Jeannel’s Cave OstracodStygobromus jemezensis – Jemez Mountains Groundwater AmphipodEurycea tonkawae – Jollyville Plateau SalamanderTetracion jonesi – Jones’ Cave MillipedeTyrannochthonius jonesi – Jones’ Cave PseudoscorpionPseudotremia salifodina – Jones’ Saltpetre Cave MillipedCaecidotea jordani – Jordan’s Cave IsopodSphalloplana kansensis – Kansas Cave FlatwormBactrurus hubrichti – Kansas Well AmphipodSpelaeorchestia koloana – Kauai Cave AmphipodAdelocosa anops – Kauai Cave Wolf SpiderCaecidotea kendeighi – Kendeigh’s Groundwater IsopodPtomaphagus hirtus – Kentucky Cave BeetleCaecidotea insula – Kindt’s Cave IsopodBanksula tutankhamen – King Tut Cave HarvestmanKleptochthonius affinisKleptochthonius anophthalmusKleptochthonius attenuatusKleptochthonius barriKleptochthonius binoculatusKleptochthonius cerberusKleptochthonius charonKleptochthonius daemoniusKleptochthonius erebicusKleptochthonius hageniKleptochthonius hubrichtiKleptochthonius infernalisKleptochthonius krekeleriKleptochthonius magnusKleptochthonius microphthalmusKleptochthonius multispinosusKleptochthonius myopiusKleptochthonius plutoKleptochthonius proximosetusKleptochthonius regulusKleptochthonius rexKleptochthonius similisKleptochthonius stygiusKleptochthonius tantalusKomarekiona eatoni – Kentucky EarthwormPseudanophthalmus krameri – Kramer’s Cave BeetleTexamaurops reddelli – Kretschmarr Cave Mold BeetleCaconemobius varius – Kuamana Cave CricketLabidostomma neotropicaLaccophilus maculosus – Dingy DiverLarca laceyi – Lacey’s Cave PseudoscorpionCambarus laconensis – Lacon Exit Cave CrayfishLacrimacandona wiseiLacunicambarus diogenes – Devil CrawfishLadislavella elodes – Marsh PondsnailLaelaps cavernicolaStygobromus lacicolus – Lake Tahoe Groundwater AmphipodDendrocoelopsis hymanae – Lake Tahoe planarianLampetra aepyptera – Least Brook LampreyLampropeltis holbrooki – Speckled KingsnakeStygobromus lanensis – Lane County Groundwater AmphipodLarca welbourniPseudanophthalmus cnephosus – Larue County Cave BeetleLascoria ambigualis – Ambiguous MothLasionycteris noctivagans – Black BatLasiurus borealis – Eastern Red BatLasiurus cinereusLasiurus seminolus – Seminole BatLatrodectus variolus – Northern Black WidowPseudotremia laudermilki – Laudermilk’s Cave MillipedeStygobromus pollostus – Least Cave AmphipodLebia ornata – Ornate Harp Ground BeetleStygobromus leensis – Lee County Cave AmphipodLirceus usdagalun – Lee County Cave IsopodLeia cuneolaLeiobunum aldrichi – Aldrich’s HarvestmanLeiobunum calcarLeiobunum longipesLeiobunum politumLeiobunum vittatum – Eastern HarvestmanLepidocyrtus atropurpureusLepidocyrtus helenaeLepidocyrtus paradoxusLepidocyrtus usitatusLepomis auritus – Redbreast SunfishLepomis cyanellus – Green SunfishLepomis gulosus – WarmouthLepomis humilis – Orangespotted SunfishLepomis macrochirus – BluegillLepomis megalotis – Mojarra De Cuatro CienegasLepomis microlophus – Redear SunfishLepthyphantes leprosus – Household Fine SheetweaverLeptocera atraLeptocera caenosaLeptopeza comptaLeptotrombidium myotisLepus americanus – Snowshoe HarePseudanophthalmus catoryctos – Lesser Adams Cave BeetleLesteva cribratulaLesteva pallipesLestodiplosis grassatorLestodiplosis satiataLeucauge venusta – Orchard OrbweaverLeucohya heteropodaLeucohya texanaKleptochthonius lewisorum – Lewis Cave PseudoscorpionCrangonyx lewisi – Lewis’ Cave AmphipodKenkia lewisi – Lewis’ cave planarianPygmarrhopalites lewisi – Lewis’ Cave SpringtailDiacyclops lewisi – Lewis’ Groundwater CopepodLeydigia leydigi – Gewone BreedstaartwatervloLiagoceradocus lonomakaLiancalus genualisProcambarus lucifugus – Light-fleeing Cave CrayfishLigidium elrodiiLigidium kofoidiPseudanophthalmus calcareus – Limestone Cave BeetleLimomyza cavernicolaLimonia annulata – SyyssienikiekkoLimonia badiaLimonia indigenaLimonia maculicostaLimonia stultaLinopodes mammouthiaLiocranoides coyleiLiocranoides tennesseensisLiocranoides unicolorLiposcelis decolor – Book LouseLiposcelis divinatoriaLirceolus bisetusLirceolus cocytusLirceolus hardeniLirceolus nidulusLirceolus pilusLirceus bicuspidatusLirceus bidentatusLirceus bisetusLirceus fontinalis – Lower Ohio WaterslaterLirceus garmaniLirceus holsingeriLirceus hoppinae – Blunt-Toothed SpringslaterLirceus littonensisLirceus orndorffiLirceus slayorum – Flat WaterslatersLirceus zigleri – Flat WaterslatersLissocreagris eurydiceLissocreagris nickajackensisLissocreagris persephoneLissocreagris plutoLissocreagris subatlanticaLitargus balteatus – Stored Grain Hairy Fungus BeetleLithasia obovata – Shawnee RocksnailLithobates catesbeianus – American BullfrogLithobates clamitans – Green FrogLithobates grylioLithobates heckscheriLithobates palustris – Pickerel FrogLithobates sphenocephalus – Southern Leopard FrogLithobates sylvaticusLithobius atkinsoniLitocampa henrotiLitocampa hoffmaniLitocampa jonesiLitocampa valentineiPseudanophthalmus cordicollis – Little Kennedy Cave BeetleLobosculum pustuloides – Tiny LiptoothPseudanophthalmus longiceps – Long-headed Cave BeetleStygobromus longipes – Long-legged Cave AmphipodLontra canadensis – Common OtterPseudotremia loomisi – Loomis’s Rough-backed MillipedeLophomus skamaniaPseudanophthalmus troglodytes – Louisville Cave BeetleLoxosceles panama – Violin SpidersLucilla inermis – Oldfield CoilLucilla singleyana – Singley’s Subterranean Discus SnailLumbricus rubellus – Blood WormLumbricus terrestris – NightcrawlerStygobromus pseudospinosus – Luray Caverns AmphipodZygonopus whitei – Luray Caverns Blind Cave MillipedeLustrochernes minorKleptochthonius lutzi – Lutz’s Cave PseudoscorpionLuxilus chrysocephalus – Striped ShinerLycosa howarthiLymantes nadineaeLynx rufus – BobcatLyogyrus retromargo – Indented DuskysnailLythrurus fasciolaris – Scarlet ShinerStygobromus mackenziei – MacKenzie’s Cave AmphipodPseudanophthalmus macradyi – Macrady’s Cave BeetleMacrobrachium carcinus – Bigclaw River ShrimpMacrocera hirsutaMacrocera nobilisMacrocheles penicilligerMacrocheles robustulus – MiteMacrocheles stygiusMacrocheles troglodytesMacrocyclops albidus – White CopepodMacrocyclops fuscus – Giant CopepodMacromastus umpquaPseudanophthalmus limicola – Maddens Cave BeetleStygobromus stegerorum – Madison Cave AmphipodCicurina madla – Madla Cave MeshweaverPygmarrhopalites madonnensis – Madonna Cave SpringtailMaevia inclemens – Dimorphic JumperPseudanophthalmus virginicus – Maiden Spring Cave BeetleMalaconothrus monodactylusStygobromus hubbsi – Malheur Cave AmphipodKenkia rhynchida – Malheur Cave FlatwormApochthonius malheuri – Malheur PseudoscorpionOrconectes pellucidus – Mammoth Cave CrayfishPalaemonias ganteri – Mammoth Cave ShrimpAnthrobia monmouthia – Mammoth Cave SpiderStygobromus vitreus – Mammoth Cave stygobromidMangora placida – Tuftlegged OrbweaverAntrorbis breweri – Manitou cavesnailPseudotremia manni – Mann’s Cave MillipedeManota obscuraPseudanophthalmus stricticollis – Marengo Cave BeetlePseudocandona marengoensis – Marengo Cave OstracodMargarinotus egregiusMarmota monax – GroundhogMarpissa lineata – Four-Lined Slender Jumping SpiderMarstonia comalensis – Comal MarstoniaMarstonia ogmorhaphe – Royal MarstoniaMartes americana – American MartenBanksula martinorum – Martins’ Cave HarvestmanMastigoproctus giganteus – Giant VinegaroonMaymena ambitaMecyclothorax aaMecynogea lemniscata – Basilica OrbweaverMegacyclops latipesMegacyclops viridis – Cyclopoid CopepodMegalothorax minimusMegalothorax tristaniMegapallifera mutabilis – Changeable MantleslugMegascops asio – Eastern Screech OwlMegaselia brevitergaMegaselia cavernicolaMegaselia nigricepsMegaselia rufipes – Hump-Backed FlyMegaselia spelunciphilaMelanoides tuberculataMelanolestes picipes – Black CorsairBanksula melones – Melones Cave HarvestmanMephitis mephitis – Striped SkunkPseudanophthalmus sidus – Meredith Cave BeetleMermessus antraeusMermessus denticulatus – Amerikaanse KasdwergspinMermessus indicabilisMermessus maculatus – Sheet-Web SpidersMermessus tridentatus – SpiderMeropelopia flavifronsMesaphorura iowensisMesaphorura krausbaueriMesaphorura pacificaMesaphorura silvicolaMesocyclops edaxMesodon clausus – Yellow GlobeletMesodon thyroidus – White-Lip GlobeMesodon zaletus – Toothed GlobeMesomphix andrewsae – Mountain ButtonMesomphix anurus – Frog ButtonMesomphix capnodes – Dusky ButtonMesomphix cupreus – Copper ButtonMesomphix perlaevis – Smooth ButtonMesomphix pilsbryi – Striate ButtonMeta ovalis – Cave Orb WeaverMetajapyx subterraneusMetalimnobia cinctipesMetaltella simoni – Hacklemesh WeaverMetisotoma grandicepsPrietella phreatophila – Mexican BlindcatMexichthonius exoticusMexiweckelia hardeniProcambarus milleri – Miami Cave CrayfishMicrobisium parvulumMicrocyclops rubellusMicrocylloepus pusillusMicropogonias undulatus – CroakerMicropterus dolomieu – Smallmouth BassMicropterus punctulatus – Spotted BassMicropterus salmoides – American Black BassMicrotus ochrogaster – Prairie VoleMicrotus pennsylvanicus – Meadow VoleMicrotus pinetorum – Pine VoleMicrotus xanthognathus – Taiga VoleMicrovelia americanaMiktoniscus linearisMiktoniscus medcofi – Small Alabama SowbugMiktoniscus morganensisMimetus notius – Reticulated Pirate SpiderMimetus puritanus – Common Pirate SpiderPhreatodrobia imitata – Mimic cavesnailMinicreagris pumilaStygobromus parvus – Minute Cave AmphipodLethemurus missus – Missus Cave SpringtailMixojapyx reddelliMochlonyx cinctipesMolothrus ater – Brown-Headed CowbirdMonopis crocicapitella – Bird Nest MothMonopsyllus wagneriMontanabathynella pecosensisMontanabathynella salishNesticus pecki – Monteagle Cave SpiderMoraria cristataMormoops megalophylla – Ghost-Faced BatMorone saxatilis – Maryland Bass HybridStygobromus morrisoni – Morrison’s Cave AmphipodBryocamptus morrisoni – Morrison’s Cave CopepodStygobromus montanus – Mountain Cave AmphipodMoxostoma erythrurum – Golden RedhorseMundochthonius cavernicolaMundochthonius holsingeriMus musculus – House MouseMusca domestica – Common House FlyMuscina prolapsa – Muscoid FlyMusculium securisPseudogarypus orpheus – Music Hall Cave PseudoscorpionMustela nivalis – Least WeaselMycetophila analisMycetophila byersiMycetophila fisheraeMycetophila ichneumoneaMycetophila ruficollisMycetophila sordidaMycomya nitidaStygobromus myersae – Myers’ Groundwater AmphipodMyodopsylla insignis – Bat FleaMyotis austroriparius – Southeastern MyotisMyotis grisescens – Gray BatMyotis leibii – Eastern Small-Footed BatMyotis lucifugus – Little Brown BatMyotis sodalis – Cluster BatMyotis velifer – Cave MyotisMyrmecina americana – American Mite-Eating AntMystacides sepulchralis – Black Dancer CaddisflyApochthonius mysterius – Mystery Cave PseudoscorpionNadabius amelesNais variabilis – Aquatic Oligochaete WormNamiotkocypria haysensisNampabius mycophorNampabius turbatorNannopetalum fontisNannopetalum vespertiloNarceus americanus – American Giant MillipedeNarceus annularisStygobromus rallus – Narrow Groundwater AmphipodPseudanophthalmus pontis – Natural Bridge Cave BeetlePseudobaicalasellus bowmani – Natural Bridge Cave IsopodEreboporus naturaconservatus – Nature Conservancy Diving BeetleNeanura hawaiiensisNeanura muscorum – Moss SpringtailNeanura persimilisNeanura pseudoquadrioculataNeaphaenops tellkampfiNecrophilus pettitiiNeelides minutusNelima elegansNelima paessleri – Aggregating HarvestmanPseudanophthalmus nelsoni – Nelson’s Cave BeetleNelsonites jonesiNelsonites walteriNemadus horniiNemoura trispinosaNeoallochernes incertusNeoallochernes stercoreusNeobisnius paederoidesNeochthonius troglodytesNeoechinorhynchus cylindratusNeogale vison – American MinkNeohelix albolabris – Eastern WhitelipNeolithobius voraciorNeoporus clypealisNeoscona domiciliorum – Red-Femured Spotted OrbweaverNeospintharus trigonum – Horned Parasitic CobweaverNeotoma floridana – Eastern WoodratNeotoma magister – Allegheny WoodratNepalomyia sombreaNeriene radiata – Filmy Dome SpiderNerodia erythrogaster – Plain-Bellied Water SnakeNerodia fasciata – Southern Water SnakeNerodia sipedon – Common WatersnakeNesticus barrowsiNesticus brimleyiNesticus carolinensis – Linville Caverns SpiderNesticus carteri – Carter’s Cave SpiderNesticus cressleriNesticus gertschiNesticus lulaNesticus mimusNesticus payneiNesticus potteriusNesticus reclusus – Lost Nantahala Cave SpiderNesticus sodanusNesticus stupkaiNesticus stygiusNeuratelia sayiNevadesmus hubbsiNevadesmus ophimontisNevadesmus superstitionaStygobromus interitus – New Castle Murder Hole Cave AmphipodPseudanophthalmus egberti – New River Valley Cave BeetlePseudanophthalmus nickajackensis – Nickajack Cave BeetleCaecidotea nickajackensis – Nickajack Cave IsopodNiptus arcanusNitidotachinus scrutatorNitocrellopsis texanaPseudanophthalmus paulus – Nobletts Cave BeetleNopoiulus kochii – HaakwangCaecidotea nordeni – Norden’s Groundwater IsopodTroglocambarus maclanei – North Florida Spider Cave CrayfishAmblyopsis spelaea – Northern CavefishCauloxenus stygius – Northern Cavefish CopepodEurycea nerea – Northern Grotto SalamanderMyotis septentrionalis – Northern Long-eared BatStygobromus phreaticus – Northern Virginia Well AmphipodStygobromus nortoni – Norton’s Cave AmphipodPseudanophthalmus nortoni – Norton’s Cave BeetleCaecidotea nortoni – Norton’s Cave IsopodNotemigonus crysoleucas – Golden ShinerNotiobia terminataNotophthalmus viridescens – Eastern NewtNotropis atherinoides – Emerald ShinerNovobisium carolinenseNovobisium ingratumNycteridopsylla chapiniNycticeius humeralis – Evening BatNyctinomops femorosaccus – Pocketed Free-Tailed BatPhreatoceras taylori – Nymph trumpetOaphantes prometheusOccasjapyx kofoidiOchrotrichia spinosaOcrepeira ectypaOctolasion lacteum – White WormOctolasion tyrtaeum – Woodland White WormOdiellus pictus – Painted HarvestmanOdocoileus virginianus – White-Tailed DeerOdontotaenius disjunctus – Patent Leather BeetleOecothea fenestralisOecothea specus – Small Cave Sun FlyOedipodrilus macbainiCrangonyx ohioensis – Ohio Cave AmphipodPseudanophthalmus ohioensis – Ohio Cave BeetleAllocrangonyx pellucidus – Oklahoma Cave AmphipodCambarus tartarus – Oklahoma Cave CrayfishPseudanophthalmus puteanus – Old Well Cave BeetleOliarus gagneriOliarus kalaupapaeOliarus lorettaeOliarus makaikiOliarus polyphemusOliarus priolaOliarus waikauOmalium rivulare – Ocillate Rove BeetleOmorgus alatusOmorgus amictusOmorgus batesiOmorgus bruckiOmorgus carinatusOmorgus costatusOmorgus fuliginosusOmorgus lindemannaeOmorgus punctatusOmorgus rubricansOmorgus suberosus – Hide BeetleOncopodura cruciataOncopodura fenestraOncopodura hubbardiOncopodura iowaeOncopodura mala – Malheur Cave SpringtailOncopodura prietoiOncopodura subhoffiOniscus asellus – Common Shiny WoodlouseStygobromus onondagaensis – Onondaga Cave AmphipodOnychiurus eousOnychiurus gelusOnychiurus janusOnychiurus obesusOnychiurus opusOnychiurus oregonensisOnychiurus paroOnychiurus parvicornisOnychiurus pipistrellaeOnychiurus pseudoarmatusOnychiurus pseudofimetariusOnychiurus reluctusOnychiurus similisOpheodrys aestivus – GreensnakeOphisaurus ventralis – Eastern Glass LizardOphyiulus pilosus – Furry Snake MillipedeOpiona catorychaOpiona graeningiOppia nitensProcambarus franzi – Orange Lake Cave CrayfishOrchesella hexfasciataOrchopeas leucopus – PulgaOrchopeas sexdentatusPhagocata oregonensis – Oregon Cave FlatwormOregonasellus elliottiOreonetides vaginatus – Undergrowth Sheet-Web WeaverOreophantes recurvatusOrfelia elegansKleptochthonius hetricki – Organ Cave PseudoscorpionFontigens tartarea – Organ cavesnailOriganates rostratusProcambarus acherontis – Orlando Cave CrayfishOrmosia affinis – CraneflyOrmosia meigeniiPseudotremia orndorffi – Orndorff’s Cave MillipedOropsylla arctomysKleptochthonius orpheus – Orpheus Cave PseudoscorpionOrthocyclops modestusOrus rubensOryzaephilus surinamensis – Sawtoothed Grain BeetleOsphranticum labronectumOsteopilus septentrionalis – Cuban TreefrogOtiorhynchus ovatus – Strawberry Root WeevilOtostigmus cooperiPseudanophthalmus praetermissus – Overlooked Cave BeetleOxidus gracilis – Greenhouse MillipedeOxyopes salticus – Lynx SpiderOxytelus exiguusStygobromus ozarkensis – Ozark Cave AmphipodSpeleonycta ozarkensis – Ozark Cave BristletailTroglichthys rosae – Ozark cavefishOzarkia alabamaOzarkia arkansaOzarkia blandaOzarkia georgiaOzarkia novaegalleciaeOzarkia serenaPachydesmus crassicutisPacificabathynella kalispellensisPacificabathynella ruthaePacificabathynella sequoiaePacificabathynella stanfordiPacificabathynella yupikZygonopus packardi – Packard’s Blind Cave MillipedeCrangonyx packardi – Packard’s Cave AmphipodPseudanophthalmus packardi – Packard’s Cave BeetleKleptochthonius packardi – Packard’s Cave PseudoscorpionPackardesmus cavicolaPaeromopus cavicolensPaitobius arienusPaitobius carolinaePaitobius juventusPalaemon kadiakensis – Mississippi Grass ShrimpPalaemon paludosus – Eastern Grass ShrimpPseudanophthalmus pallidus – Pale Cave BeetlePaleonura petebellingeriProcambarus pallidus – Pallid Cave CrayfishPangaeus docilisPanstrongylus geniculatus – BarbeiroPantelozetes cavaticusPantherophis guttatus – Corn SnakePantherophis obsoletus – Pilot Black SnakePantherophis quadrivittatus – Yellow Rat Snake (Quadrivittata)Pantherophis spiloides – Gray Rat SnakeParabogidiella americanaParacyclops canadensisParacyclops chiltoniParacyclops poppei – CopepodParagnetina media – Embossed StoneParaholsingerius smaragdinusParametriocnemus lundbeckiiParamoera lokowaiParamoera paakaiParamoera ruaParaplanaria occultaPararhynchelmis texanaParascalops breweri – Brewer’s MoleParasitus fimetorumParasitus rembertiParasteatoda tepidariorum – Common House SpiderParatachys aaaParatheridula perniciosa – Cobweb SpidersParavachonium bolivariParavitrea capsellaParavitrea multidentata – Dentate SupercoilParazaona cavicolaParia sexnotata – Juniper PariaParisotoma notabilisParobisium charlotteaeParobisium petilumParobisium yosemiteParvidrilus strayeriPatera appressa – Flat BladetoothPatera laevior – Smooth BladetoothPatera perigrapta – Engraved BladetoothPatera sargentiana – Grand BladetoothPatrobus longicornis – Long-Horned Patrobus BeetleStygobromus redactus – Pattons Cave AmphipodPseudanophthalmus paynei – Payne’s Cave BeetleStygobromus pecki – Peck’s Cave AmphipodScoterpes stewartpecki – Peck’s Cave MillipedeTyrannochthonius pecki – Peck’s Cave PeudoscorpionPseudosinella pecki – Peck’s Cave SpringtailPegoplata infirmaPelegrina exiguaPelegrina proterva – Common White-Cheeked Jumping SpiderPenaeus setiferus – Northern White ShrimpStygobromus pennaki – Pennak Cave AmphipodCrangonyx dearolfi – Pennsylvania Cave AmphipodPercina caprodes – Common LogperchPercina nigrofasciata – Blackbanded DarterPercymoorensis lateralisPerichaeta minimaPericoma scotiaePerimyotis subflavus – Tricolored BatPeriplaneta americana – American CockroachPerissopalla flagellisetulaPeromyscopsylla hesperomysPeromyscus attwateri – Attwater’s MousePeromyscus boylii – Brush DeermousePeromyscus gossypinus – Cotton DeermousePeromyscus leucopus – White-Footed DeermousePeromyscus maniculatus – Deer MousePerpolita binneyana – Blue GlassSphalloplana evaginata – Perryville Cave FlatwormPetrochelidon pyrrhonota – American Cliff SwallowPseudanophthalmus petrunkevitchi – Petrunkevitch’s Cave BeetlePhagocata angustaPhagocata bursaperforataPhagocata carolinensisPhagocata gracilis – Slender Spring FlatwormPhagocata morganiPhagocata notorchisPhagocata proceraPhagocata pygmaeaPhagocata spuriaPhalangodes armataCambarus pecki – Phantom Cave CrayfishPhaonia soccataPhelister fulvulusPhelister luculentus – Escarabajo PayasoPhenacomys intermedius – Heather VolePheretima rodericensisPhidippus purpuratus – Marbled Purple JumperPhilomycus carolinianus – Carolina MantleslugPhilomycus togatus – Toga MantleslugPhilonthus cyanipennis – Staph BeetlePhilonthus lomatusPhoberus capensisPhoberus pusillusPhoberus sulcatus – Grooveneck Keratin BeetlePholcus dadePholcus jusahiPholcus lanieriPholcus phalangioides – Cosmopolitan Cellar SpiderPhoxinus erythrogasterPhreatodrobia bullaPhreatodrobia coronaePhreatodrobia embossaPhronia exiguaPhronia flavipesPhronia incertaPhysella acuta – European PhysaPhysella gyrina – Tadpole PhysaPhysocyclus enaulusPhysocypria denticulataPhysocypria globulaStygobromus heteropodus – Pickle Springs AmphipodPimephales promelas – Fathead Minnow (Rosy Reds)Pimoa altioculataKenkia glandulosa – Pink Cave FlatwormPinodytes pusioPinodytes rothiPirata alachuusPirata sedentariusPiratula insularis – Lonely Wolf SpiderPisaurina mira – Nursery Web SpiderStygobromus obrutus – Pittsylvania Well AmphipodStygobromus pizzinii – Pizzini’s Cave AmphipodPlathemis lydia – Common Whitetail or Long-Tailed SkimmerPlatynus angustatusPlatynus cincticollisPlatynus parmarginatusPlatynus tenuicollis – Slender Ground BeetlePlestiodon fasciatus – Common Five-Lined SkinkPlethodon albagula – Western Slimy SalamanderPlethodon angusticlavius – Ozark SalamanderPlethodon caddoensis – Caddo Mountain SalamanderPlethodon cinereus – Eastern Red-Backed SalamanderPlethodon dorsalis – Northern Zigzag SalamanderPlethodon glutinosus – Northern Slimy SalamanderPlethodon grobmani – Southeastern Slimy SalamanderPlethodon petraeus – Pigeon Mountain SalamanderPlethodon richmondi – Ravine SalamanderPlethodon serratus – Southern Red-Backed SalamanderPlethodon ventralis – Southern Zigzag SalamanderPlethodon websteri – Webster’s SalamanderPlumatyla humerosaPlutomurus californicusPlutomurus grahamiPnyxia scabiei – Potato Scab GnatPoecilochirus carabiPoecilophysis extraneostellaPoecilophysis pratensis – MitePoecilophysis weyerensisPogonognathellus bidentatusPogonognathellus danieliPogonognathellus dubius – Ghost Silver Bullet SpringtailPogonognathellus flavescensPogonognathellus nigritusPolycentropus barriPolycentropus elarusPolydesmus inconstans – European Sculpted MillipedePolydrusus impressifrons – Pale Green WeevilPolygonia comma – Eastern CommaPolynoncus gemmingeriPolysphondylium violaceumPomatiopsis lapidaria – Slender WalkerPomoxis nigromaculatus – Black CrappiePonera pennsylvanica – Common Porthole AntPorcellio laevis – Smooth SlaterPorcellio scaber – Common Rough WoodlousePorcellio spinicornis – Painted WoodlousePorrhomma egeria – KelderkleinoogjePorrhomma terrestre – Terrestrial Wide-Eyed SheetweaverPotamocypris fulvaPotamothrix bavaricus – Aquatic Oligochaete WormSphalloplana consimilis – Powell Valley Cave FlatwormAmerigoniscus henroti – Powell Valley Terrestrial Cave IsopodPratherodesmus despainiPratherodesmus ecclesiaPratherodesmus voylesiPrenolepis imparis – American Winter AntStygobromus paxillus – Prettyboy Groundwater AmphipodConasellus pricei – Price’s Cave IsopodCambarus hamulatus – Prickly Cave CrayfishPrimicimex cavernisPrionochaeta opaca – Small Carrion BeetlePristiloma subrupicola – Southern TightcoilPristina leidyi – Aquatic Oligochaete WormProcambarus alleni – Everglades CrayfishProcambarus blandingii – Santee CrayfishProcambarus clarkii – Red Swamp CrayfishProcambarus cuevachicaeProcambarus fallax – Slough CrayfishProcambarus paeninsulanus – Peninsula CrayfishProcambarus pilosimanusProcambarus spiculifer – White Tubercled CrayfishProcambarus toltecae – Toltecae CrayfishProcambarus versutus – Sly CrayfishProcambarus villalobosiProcaris hawaianaProceratium micrommatumProcladius bellusProcyon lotor – Common RaccoonProgomphus obscurus – Common SanddragonProgradungula carraiensis – Carrai Cave SpiderProisotoma frisoniProisotoma minuta – SpringtailProisotoma sepulcralisProisotoma vecaProisotoma vesiculataKleptochthonius proserpinae – Proserpina Cave PseudoscorpionFontigens proserpina – Proserpine SpringsnailProsimulium mixtum – Mixed-Up Black FlyProsimulium saltusProstoma graecenseProteocephalus poulsoniProtolimnesia ventriplacophoraPsephenus herricki – Herrick’s Water Penny BeetlePseudachorutes aureofasciatusPseudachorutes saxatilisPseudachorutes subcrassoidesPseudacris crucifer – Spring PeeperPseudacris feriarum – Southeastern Chorus FrogPseudacris triseriata – Striped Chorus FrogPseudanophthalmus barberiPseudanophthalmus barriPseudanophthalmus cerberusPseudanophthalmus chthoniusPseudanophthalmus ciliarisPseudanophthalmus cumberlandusPseudanophthalmus darlingtoniPseudanophthalmus desertusPseudanophthalmus digitusPseudanophthalmus distinguensPseudanophthalmus elongatusPseudanophthalmus emersoniPseudanophthalmus eremitaPseudanophthalmus exiguusPseudanophthalmus farrelliPseudanophthalmus fluviatilisPseudanophthalmus fulleriPseudanophthalmus fuscusPseudanophthalmus globicepsPseudanophthalmus grandisPseudanophthalmus henrotiPseudanophthalmus hesperusPseudanophthalmus higginbothamiPseudanophthalmus humeralisPseudanophthalmus hypertrichosisPseudanophthalmus hypolithosPseudanophthalmus lallemantiPseudanophthalmus leonaePseudanophthalmus lodingiPseudanophthalmus loganensisPseudanophthalmus menetriesiPseudanophthalmus meridionalisPseudanophthalmus orthosulcatusPseudanophthalmus pilosusPseudanophthalmus princepsPseudanophthalmus productusPseudanophthalmus profundusPseudanophthalmus pubescensPseudanophthalmus rittmaniPseudanophthalmus scutilisPseudanophthalmus solivagusPseudanophthalmus striatusPseudanophthalmus sylvaticusPseudanophthalmus tennesseensisPseudanophthalmus tenuisPseudanophthalmus transfluvialisPseudanophthalmus umbratilisPseudanophthalmus vanburenensisPseudemys peninsularis – Peninsular CooterPseudobaicalasellus magnieziPseudobaicalasellus mausiPseudocandona albicansPseudodifflugia gracilisPseudogarypus hypogeusPseudogarypus speleusPseudoleria parvitarsusPseudopolydesmus erasusPseudopolydesmus pinetorumPseudopolydesmus serratus – Common Pink Flat-BackPseudosinella aeraPseudosinella albaPseudosinella argenteaPseudosinella bonaPseudosinella bonetiPseudosinella collinaPseudosinella dubiaPseudosinella duodecimpunctataPseudosinella erehwonPseudosinella espanitaPseudosinella extraPseudosinella flatuaPseudosinella folsomiPseudosinella georgiaPseudosinella gisiniPseudosinella gisini carolinaPseudosinella gisini virginiaPseudosinella grandaPseudosinella josemariiPseudosinella meganporteriPseudosinella nataPseudosinella opsPseudosinella orbaPseudosinella rolfsiPseudosinella sexoculataPseudosinella vesperaPseudosinella violentaPseudosinella vitaPseudotremia acheronPseudotremia aeacusPseudotremia amphioraxPseudotremia armesiPseudotremia carterensisPseudotremia cercopsPseudotremia cocytusPseudotremia deprehendorPseudotremia eburneaPseudotremia fongiPseudotremia fractaPseudotremia handiPseudotremia hobbsiPseudotremia kerboiPseudotremia lethePseudotremia lictorPseudotremia meropsPseudotremia minosPseudotremia momusPseudotremia nodosaPseudotremia nyxPseudotremia princeps – South Branch Valley Cave MillipedePseudotremia rhadamanthusPseudotremia schneideraePseudotremia spiraPseudotremia styxPseudotremia tuberculataPseudotremia uncaPseudotremia valgaPseudotriton montanus – Mud SalamanderPseudotriton ruber – Red SalamanderPsilochorus cordatusPsychoda cinereaPsychoda minutaPsychoda phalaenoidesPsychoda pusillaPsychoda reevesiPsychoda satchelliPsychoda umbracolaPsychopomporus felipiPsyllipsocus ramburii – Cave BarklousePtenothrix atraPtenothrix marmorataPtenothrix quadrangularisPteronotropis harperi – Redeye ChubPteronotus rubiginosus – Wagner’s Common Mustached BatPterostichus coracinusPterostichus lachrymosusPterostichus relictusPterygoplichthys disjunctivus – Vermiculated Sailfin CatfishPtomaphagus appalachianusPtomaphagus barriPtomaphagus bedfordensisPtomaphagus californicusPtomaphagus cavernicolaPtomaphagus chromolithusPtomaphagus cocytusPtomaphagus consobrinusPtomaphagus cumberlandusPtomaphagus elabraPtomaphagus episcopusPtomaphagus fecundusPtomaphagus fiskeiPtomaphagus fumosusPtomaphagus giaquintoiPtomaphagus gypsumPtomaphagus hazelaePtomaphagus hubrichtiPtomaphagus inyoensisPtomaphagus juliusPtomaphagus laticornisPtomaphagus leoPtomaphagus loedingiPtomaphagus longicornisPtomaphagus nashvillensisPtomaphagus neojonesiPtomaphagus parashantPtomaphagus shapardiPtomaphagus solanumPtomaphagus spelaeusPtomaphagus ulkeiPtomaphagus walteriPtomaphagus whiteselliPtyoiulus impressus – Flocculent Tailed MillipedeLitocampa pucketti – Puckett’s Cave DipluranPuliciphora suavisPuliciphora virginiensisPseudotremia peponocranium – Pumpkin-headed Cave MillipedPupoides albilabrisCalathaemon holthuisi – Purgatory Cave ShrimpPseudotremia purselli – Pursell’s Cave MillipedProcambarus morrisi – Putnum County Cave CrayfishPygmarrhopalites altusPygmarrhopalites arcusPygmarrhopalites ashcraftensisPygmarrhopalites benitusPygmarrhopalites bimusPygmarrhopalites buffaloensisPygmarrhopalites caedusPygmarrhopalites commorusPygmarrhopalites dubiusPygmarrhopalites fransjanssensPygmarrhopalites hirtusPygmarrhopalites hubbardiPygmarrhopalites incantatorPygmarrhopalites jayPygmarrhopalites lacunaPygmarrhopalites leonardwoodensisPygmarrhopalites marshalliPygmarrhopalites obtususPygmarrhopalites pavoPygmarrhopalites plethorasariPygmarrhopalites pygmaeusPygmarrhopalites sacerPygmarrhopalites salemensisPygmarrhopalites sapoPygmarrhopalites sextusPygmarrhopalites shoshoneiensisPygmarrhopalites silvusPygmarrhopalites texensisPygmarrhopalites youngsteadtiiPylodictis olivaris – Flathead CatfishStygobromus quatsinensis – Quatsino Cave AmphipodQuedius alesiQuedius capucinusQuedius erythrogasterQuedius fulgidus – Large Rove BeetleQuedius mesomelinus – Staph BeetleQuedius spelaeusHelicodiscus barri – Raccoon coilNesticus furtivus – Racoon Mountain Caverns Cave SpiderMiktoniscus oklahomensis – Racovitza’s Cave IsopodMiktoniscus racovitzai – Racovitza’s Terrestrial Cave IsopodStygobromus foliatus – Rappahannock Spring AmphipodSpeodesmus reddelli – Reddell’s Cave MillipedeScoterpes willreevesi – Reeves’ Cave MillipedeSphalloplana pricei – Refton Cave FlatwormRemasellus parvusPseudotremia reynoldsae – Reynolds Cave MillipedeRhadine austinicaRhadine babcockiRhadine bullisRhadine caudataRhadine exilisRhadine grubbsiRhadine howdeniRhadine infernalisRhadine insolitaRhadine ivyiRhadine koepkeiRhadine larvalisRhadine longicollisRhadine noctivagaRhadine ozarkensisRhadine reyesiRhadine rubraRhadine russelliRhadine specaRhadine sprouseiRhadine subterraneaRhadine tenebrosaRhagidia diversicolorRhagidia variaRhamdia quelen – Silver CatfishRhantus suturalis – Cosmopolitan Diving BeetleRheocyclops virginianusRhinichthys obtusus – Western Blacknose DaceRhinocricus ocraceusRhinotus panamanusRhyacodrilus sodalis – Aquatic Oligochaete WormRhyacophila nigritaRhynchomonas nasutaPseudanophthalmus krekeleri – Rich Mountain Cave BeetlePseudanophthalmus paradoxus – Ridetop Cave BeetleCicurina baronia – Robber Baron Cave MeshweaverPseudanophthalmus robustus – Robust Cave BeetleRobustocheles hilliRobustocheles occultaStygobromus kenki – Rock Creek Groundwater AmphipodStygobromus baroodyi – Rockbridge County Cave AmphipodSphalloplana virginiana – Rockbridge County Cave FlatwormPseudotremia roebuckorum – Roebuck’s Cave MillipedePseudanophthalmus rogersae – Roger’s Cave BeetleRotomelita anaRotomelita lokoaPseudanophthalmus rotundatus – Rotund Cave BeetleStygobromus mausi – Round Hill Cave AmphipodChitrella regina – Royal Syarinid PseudoscorpionStygobromus lucifugus – Rubious Cave AmphipodRudiloria trimaculataRudolfina cavernicolaBanksula rudolphi – Rudolph’s Cave HarvestmanStygobromus rudolphi – Rudolph’s Groundwater AmphipodParamexiweckelia ruffoi – Ruffo’s Cave AmphipodRugathodes sexpunctatus – Common Six-Spotted CobweaverRugilus dentatusRugosuscandona scharfiApochthonius russelli – Russell Cave PseudoscorpionStygobromus russelli – Russell’s Cave AmphipodPseudanophthalmus seclusus – Rye Cove Cave BeetleLirceus culveri – Rye Cove Cave IsopodPseudotremia ryensis – Rye Cove Cave MillipedRyloviella pilosaRymosia fasciataRymosia filipesRymosia triangularisSabacon cavicolens – North American Cavernicolous HarvestmanSaetigerocreagris phyllisaeSagittocythere barriSagittocythere stygiaPseudanophthalmus sanctipauli – Saint Paul Cave BeetleCambarus hubrichti – Salem Cave CrayfishCaecidotea salemensis – Salem Cave IsopodTyphlichthys eigenmanni – Salem Plateau CavefishPseudotremia salisae – Salisa’s Cave MillipedDiacyclops salisae – Salisa’s Groundwater CopepodSalmasellus howarthiSalmasellus steganothrixSalpingoeca amphoridiumProcambarus erythrops – Santa Fe Cave CrayfishSayornis phoebe – Eastern PhoebeScalopus aquaticus – Eastern MoleScaphinotus andrewsii – Andrew’s Snail-Eating BeetleScaphinotus unicolorScatopse notata – Black Compost FlySceloporus undulatus – Eastern Fence LizardSchaefferia asymmetricaSchaefferia steinmanniSchaefferia unicaSchizocosa ocreata – Brush-Legged Split Wolf SpiderSchizocosa saltatrixPseudanophthalmus scholasticus – Schoolhouse Cave BeetleSchornikovdona bellensisSchrankia howarthiSciaphilus asperatus – Strawberry Root WeevilScincella lateralis – Ground SkinkSciodrepoides latinotumSciodrepoides terminansSciurus carolinensis – Eastern Gray SquirrelSclerobunus cavicolensSclerobunus jemezSclerobunus klomaxSclerobunus madhousensisSclerobunus speoventusSclerobunus steinmanniSclerobunus ungulatusScoliocentra brachypternaScoliocentra fraternaScoliocentra tinctaScoliopteryx libatrix – Herald MothScolopocryptops sexspinosus – Eastern Fire CentipedeScoterpes austrinusScoterpes blountensisScoterpes copeiScoterpes hesperusScoterpes jackdanieliScoterpes musicarusticaScoterpes nudusScoterpes syntheticusScoterpes tricornerScoterpes ventusScotinella redemptaScutacarus strinatiiScutigera coleoptrata – House CentipedeScytodes intricata – Spitting SpidersScytonotus australisScytonotus granulatus – Granulated MillipedeSeborgia hershleriSeborgia relictaStygobromus mysticus – Secret Cave AmphipodSehirus cinctus – White-Margined Burrower BugSelachochthonius heterodentatusSemionellus placidus – Salmon Cherry MillipedeSemotilus atromaculatus – Creek ChubPseudanophthalmus senecae – Seneca Cave BeetleSensillanura barberiSensillanura illinaSepedophilus crassusSepedophilus littoreus – Staph BeetleBowmanasellus sequoiae – Sequoia Cave IsopodSequoiadesmus krejcaePseudanophthalmus sequoyah – Sequoyah Cave BeetleCaecidotea serrata – Serrated Cave IsopodAntroselates spiralis – Shaggy cavesnailDasyscias franzi – Shaggy ghostsnailPseudotremia sheari – Shear’s Cave MillipedeStygobromus sheldoni – Sheldon’s Groundwater AmphipodPseudosinella testa – Shelled Cave SpringtailPseudotremia shelleyi – Shelley’s Cave MillipedeCambarus sheltae – Shelta Cave CrayfishTyrannochthonius sheltae – Shelta Cave PseudoscorpionShibaia longisensillaPseudanophthalmus shilohensis – Shiloh Cave BeetleTexella shoshone – Shoshone Cave HarvestmanHubbardia shoshonensis – Shoshone Cave WhipscorpionSicifera bifurcaSicifera dentataSpeodesmus falcatus – Sickled Cave MillipedeStygobromus sierrensis – Sierra Groundwater AmphipodSigmocheir calaverasSigmoria fumimontisPseudanophthalmus sericus – Silken Cave BeetleProcambarus attiguus – Silver Glen Springs Cave CrayfishStygobromus simplex – Simple Cave AmphipodPseudanophthalmus simplex – Simple Cave BeetleSimulium parnassum – Dark Black FlySimulium tuberosum – Tubercled Black FlySimulium venustum – Whitestockinged Black FlySimulium vernumSinella agnaSinella alataSinella bacaSinella basidensSinella caecaSinella cavernarumSinella krekeleriSinella tectaSinella yosiiaSitophilus oryzae – Rice WeevilSkistodiaptomus pallidusCaecidotea stiladactyla – Slender-fingered Cave IsopodSminthurides lepusSminthurides malmgreniSminthurinus henshawiSoldanellonyx chappuisiSoldanellonyx chapuisiSoldanellonyx monardi – MiteSoldanellonyx morardiSolenopsis geminata – Tropical Fire AntScoterpes sollmani – Sollman’s Cave MillipedeSomatochlora tenebrosa – Clamp-Tipped EmeraldSorex cinereus – Cinereus ShrewSorex fumeus – Smoky ShrewSorex hoyi – American Pygmy ShrewSorex palustris – American Water ShrewPseudanophthalmus potamaca – South Branch Valley Cave BeetleHesperochernes mirabilis – Southeastern Cave PseudoscorpionOrconectes australis – Southern Cave CrayfishTyphlichthys subterraneus – Southern CavefishEurycea braggi – Southern Grotto SalamanderCaecidotea recurvata – Southwest Virginia Cave IsopodStygobromus mackini – Southwestern Virginia Cave AmphipodSparganophilus eiseniSparganophilus tamesis – Amerikaanse WortelwroeterSpelaedrilus multiporusSpelaeorchestia pahoehoeSpeleobama vanaSpeleochus blanchardensisSpeleochus croceusSpeleochus eurousSpeleochus ferusSpeleochus macosarSpeleochus steevesiSpeleochus stygicusSpeleochus synstygicusSpeleomaster lexiSpeleomaster peckiSpeleonura kenchristianseniSpeleonychia sengeriSpelobia clunipesSpelobia maculipennisSpelobia pseudosetariaSpelobia semioculataSpelobia tuberculosaSpelungula cavernicola – Nelson Cave SpiderSpeocirolana hardeniSpeodesmus bicornourusSpeodesmus castellanusSpeodesmus echinourusSpeolepta leptogasterSpeorthus reyesiSpeorthus tuganbiusSpeoseya grahamiSpeotrombicula trifurcaSpermophora senoculata – Shortbodied Cellar SpiderSphaeridia serrataSphaerium simile – Grooved FingernailclamSphaerium transversum – Long Fingernail ClamSphaeroderus stenostomus – Small Snail-Eating Ground BeetleSphaeromicola moriaSphalloplana hypogeaSphalloplana mohriSphalloplana percoecaSphendononema guildingii – Quarenta-PernasPhreatodrobia spica – Spiky CavesnailSpiniphora slossonaeStygobromus urospinatus – Spinose Cave AmphipodStygobromus spinatus – Spiny Cave AmphipodPseudosinella spinosa – Spiny Cave SpringtailSpongilla lacustris – Common Freshwater SpongePseudanophthalmus punctatus – Spotted Cave BeetlePalaemonetes cummingi – Squirrel Chimney Cave ShrimpSteatoda triangulosa – Triangulate Bud SpiderSteatornis caripensis – OilbirdPseudanophthalmus steevesi – Steeves’ Cave BeetleCaecidotea steevesi – Steeves’ Cave IsopodTyrannochthonius steevesi – Steeves’ Cave PseudoscorpionStegana coleoptrata – Pomace FlyStelidota geminata – Strawberry Sap BeetleStygobromus stellmacki – Stellmack’s Cave AmphipodStenistoderus rubripennis – Red-Winged Rove BeetleStenochironomus pulchripennisStenolophus ochropezusStenonema femoratum – Cream CahillStenophilus californicusStenoponia americanaStenotrema angellum – Kentucky SlitmouthStenotrema edvardsi – Ridge-And-Valley SlitmouthStenotrema exodon – Alabama SlitmouthStenotrema hirsutum – Hairy SlitmouthStenotrema spinosum – Carinate SlitmouthStenotrema stenotrema – Inland SlitmouthStenotrema turbinellaStenus alacerSternopsylla distinctaPseudanophthalmus tenebrosus – Stevens Creek Cave BeetleApochthonius typhlus – Stone County Cave PseudoscorpionStoreria occipitomaculata – Mexican Yellowbelly Brown Snake [Hidalgoensis]Pseudanophthalmus quadratus – Straley’s Cave BeetleStriaria eldoraTexapyrgus longleyi – Striated hydrobeStriatura meridionalis – Median StriateStrigamia branneriStrix varia – Barred OwlStrobilops affinis – Eightfold PineconeStrobilops texasianus – Southern PineconeCaecidotea stygia – Stygian Cave IsopodAmnicola stygius – Stygian cavesnailStygobromus acicularisStygobromus ackerlyiStygobromus allegheniensisStygobromus anacostensisStygobromus bakeriStygobromus barryiStygobromus cherylaeStygobromus duplusStygobromus elatusStygobromus fecundusStygobromus fontinalisStygobromus gardneriStygobromus gracilipesStygobromus grandisStygobromus inexpectatusStygobromus latusStygobromus minutusStygobromus montanensisStygobromus nanusStygobromus obscurusStygobromus oregonensisStygobromus paveki – Pavek’s Groundwater AmphipodStygobromus puteanusStygobromus reddelliStygobromus scottsruni – Scotts Run Groundwater AmphipodStygobromus secundusStygobromus tahoensisStygobromus tenuisStygonyx courtneyiStygoporus oregonensisStygopyrgus gracilisStygopyrgus variabilisStylodrilus beattieiStylodrilus californianusStylodrilus wahkeenensisPhanetta subterranea – Subterranean Sheetweb SpiderStygobromus subtilis – Subtle Cave AmphipodSubulina octona – Miniature AwlsnailCrangonyx sulphurium – Sulphurous Cave AmphipodSuperodontella corniferSuperodontella substriataPseudanophthalmus inexpectatus – Surprising Cave BeetlePseudanophthalmus orientalis – Surprising Cave BeetleSus scrofa – Eurasian Wild PigCambarus speleocoopi – Sweet Home Alabama Cave CrayfishSylvilagus floridanus – Eastern CottontailSyngrapha alias – Spruce Climbing CutwormSyrphus rectusTachinus fimbriatusTachinus fumipennisTachycines asynamorus – Greenhouse Camel CricketTachypeza humeralisTachyporus maculipennisTachys proximusTachys pumilusTachys scitulusTachyura luteaStygobromus borealis – Taconic Cave AmphipodTadarida brasiliensis – Brazilian Free-Tailed BatTaiyutyla loftinaeTamias striatus – Eastern ChipmunkTamiasciurus hudsonicus – Red SquirrelTanytarsus recurvatusPseudanophthalmus fastigatus – Tapered Cave BeetleTaracus aspenaeTaracus fluvipileusTaracus marchingtoniTaracus silvestriiTaracus tayloriTaranucnus ornithesTarebia granifera – Quilted MelaniaTarlina noorundiTarnania tarnaniiTartarocreagris altimanaTartarocreagris amblyopaTartarocreagris attenuataTartarocreagris dominaTartarocreagris grubbsiTartarocreagris hoodensisTartarocreagris infernalisTartarocreagris intermediaTartarocreagris proserpinaTartarocreagris reyesiPseudanophthalmus parvus – Tatum Cave BeetleTaxidea taxus – American BadgerTayshaneta anopicaTayshaneta archambaultiTayshaneta bullisTayshaneta concinnaTayshaneta fawcettiTayshaneta oconnoraeTayshaneta sandersiTayshaneta sprouseiTayshaneta vidrioTayshaneta whiteiTectocepheus velatusTegenaria domestica – Barn Funnel WeaverTegenaria pagana – Rural Funnel-Web SpiderTelomerina canaTelomerina chillcottiTelomerina flavipesPseudanophthalmus templetoni – Templeton’s Cave BeetleOrconectes incomptus – Tennessee Cave CrayfishTetracion tennesseensis – Tennessee Cave MillipedeGyrinophilus palleucus – Tennessee Cave SalamanderNesticus tennesseensis – Tennessee Cave SpiderAntrorbis tennesseensis – Tennessee CavesnailCaecidotea richardsonae – Tennessee Valley Cave IsopodTenuiphantes sabulosusTerrapene carolina – Common Box TurtleTerrapene triunguis – Three-Toed Box TurtleTerrilimosina racovitzaiTethysbaena texanaTetragnatha elongata – Elongate Stilt SpiderTetragnatha laboriosa – Long-Jawed Orb WeaverTetragnatha shoshone – Amerikanische StreckerspinneTetragnatha versicolor – Versicolor Long-Jawed OrbweaverTexanobathynella aaronswinkiTexanobathynella bowmaniTexanobathynella coloradoensisTexanobathynella sachiTexapyrgus diaboli – Devil TryoniaEurycea rathbuni – Texas Blind SalamanderLirceolus smithii – Texas Troglobitic Water SlaterTexella elliottiTexella hardeniTexella hilgerensisTexella martensiTexella mulaikiTexella tuberculataTexella welbourniTexella whiteiTexicerberus amistadTexicerberus castilloiTexicerberus schotteaeTexiweckelia texensisTexiweckeliopsis insolitaTexoreddellia aquilonalisTexoreddellia capitesquameoTexoreddellia coahuilensisTexoreddellia mediaTexoreddellia occasusTexoreddellia texensisThalassaphorura encarpata – SpringtailThalkethops grallatrixThamnophis proximus – Western Ribbon SnakeHolsingeria unthanksensis – Thankless ghostsnailTheatops phanusTheotima makuaTheridion flavonotatumTheridion glaucescensTheridiosoma gemmosum – Common Eastern Ray SpiderTheridula opulenta – Cobweb SpidersThermobia domestica – FirebratThesiastes fossulatusPseudanophthalmus thomasi – Thomas’ Cave BeetleThymoites marxiThymoites mineroTidarren sisyphoides – Tent Cobweb WeaverStygobromus indentatus – Tidewater AmphipodStygobromus araeus – Tidewater Interstitial AmphipodPseudanophthalmus hadenoecus – Timber Ridge Cave BeetleTingupa pallida – Tingupa Cave MillipedePseudanophthalmus pusillus – Tiny Cave BeetleTipula abdominalis – Giant Crane FlyTipula algonquinTipula calopteraTmesiphorus costalisPseudotremia conservata – TNC Cave MillipedTokophrya cyclopumTomocerus curtusTomocerus dubiusTomocerus flavescensTomocerus vulgarisTomoderus impressulusRhadine persephone – Tooth Cave BeetleTartarocreagris texana – Tooth Cave PseudoscorpionTayshaneta myopica – Tooth Cave SpiderTrogloglanis pattersoni – Toothless BlindcatPtomaphagus torodei – Torode’s Cave Fungus BeetleTyrannochthonius torodei – Torode’s Cave PseudoscorpionToxidium compressumTrachelipus rathkii – Rathke’s WoodlouseTrachemys scripta – Pond SliderTraegaardhia gracilisTraegaardhia holsingeriTraegaardhia parallelosetaTraegaardhia similisTrechus cumberlandusTrechus tennesseensisTrechus tuckaleecheeTriacanthella copelandiTrichobius majorTrichocera fattigianaTrichocera hiemalis – WinterpluimantennemugTrichocera maculipennisTrichocera regelationis – DooimugTrichodrilus comalensisTrichodrilus culveriTrichomorpha capillataTrichoniscus provisorius – AnsarisiiranenTrichoniscus pusillus – Common Pygmy WoodlouseTrichopetalum duxTrichopetalum stannardiTrichopetalum uncumTrichophya pilicornis – Staph BeetleTrichotichnus dichrousTrichotichnus fulgensTridenchthonius juxtlahuacaTrigenotyla parcaTrimiomelba dubiaTrinectes maculatus – Freshwater FlounderStygobromus trinus – Trinity County Cave AmphipodTriodopsis complanata – Glossy ThreetoothTriodopsis hopetonensis – Magnolia ThreetoothTriodopsis tridentata – Northern ThreetoothTriodopsis vulgata – Dished ThreetoothTriphosa haesitata – Tissue MothTrisetobisium fallaxTrochosa terricola – Gewone NachtwolfspinTrombicula cavernarumTrombicula tibbettsiTropisternus collaris – Collared Water Scavenger BeetleTropocyclops extensusTropocyclops prasinusTrox aequalis – Even Hide Scarab BeetleTrox laticollisTrox scaber – Hide BeetleTuberochernes aalbuiTuberochernes cohniTuberochernes ubickiTuberona leonidasiTullbergia clavataTullbergia granulataTullbergia macrochaetaAntrobia culveri – Tumbling Creek cavesnailBanksula tuolumne – Tuolumne Cave HarvestmanPseudotremia contorta – Twisted-gonopod Cave MillipedCaecidotea bicrenata – Two-toothed Cave IsopodTychobythinus bythinioidesTychobythinus hubrichtiTychobythinus jonesiTychobythinus strinatiiTylparua troglodytesTyphlobius caecusTyphloelmis carolineTyphloelmis fineganTyphloelmis sanfelipeTyphloelmis spangleriTyphlogastrura alabamensisTyphlogastrura christianseniTyphlogastrura hubbardiTyphlonesticus silvestrii – Silvestri’s Cave SpiderTyrannochthonius alabamensisTyrannochthonius aladdinensisTyrannochthonius araluTyrannochthonius archeriTyrannochthonius attenuatusTyrannochthonius avernicolusTyrannochthonius binoculatusTyrannochthonius chamberliniTyrannochthonius charonTyrannochthonius diabolusTyrannochthonius erebicusTyrannochthonius felixTyrannochthonius fiskeiTyrannochthonius gnomusTyrannochthonius halopotamusTyrannochthonius hypogeusTyrannochthonius infernalisTyrannochthonius muchmoreorumTyrannochthonius nergalTyrannochthonius orpheusTyrannochthonius osirisTyrannochthonius parvusTyrannochthonius pholeterTyrannochthonius plutoTyrannochthonius pupukeanusTyrannochthonius satanTyrannochthonius skeletonisTyrannochthonius stoneiTyrannochthonius stygiusTyrannochthonius tartarusTyrannochthonius tenuisTyrannochthonius troglodytesUfocandona hannaleeaeUla elegansUloborus glomosus – Featherlegged OrbweaverUlomorpha pilosellaUncinocythere ambophoraUncinocythere equicurvaUncinocythere pholeteraUncinocythere simondsiUncinocythere warreniUncinocythere xaniaUncinocythere zanclaUniomerus carolinianus – Eastern PondhornPseudanophthalmus unionis – Union County Cave BeetleUroblaniulus canadensis – Sickle Tailed MillipedeUroctonus grahamiUroseius infirmusUrsus americanus – American Black BearUrsus arctos – Brown BearUsofila gracilisStygobromus utahensis – Utah Cave AmphipodUvarus texanusVachonium bonetiVachonium mayaVaejovis carolinianus – Southern Unstriped ScorpionPseudanophthalmus valentinei – Valentine’s Cave BeetlePtomaphagus valentinei – Valentine’s Cave Fungus BeetleLissocreagris valentinei – Valentine’s Cave PseudoscorpionTyphlogastrura valentini – Valentine’s Cave SpringtailVallonia pulchella – Beautiful Grass SnailPseudobaicalasellus vandeli – Vandel’s Cave IsopodVaracosa avara – Spurred Secretive Wolf SpiderVeigaia kochiVentridens demissus – Perforate DomeVentridens gularis – Throaty DomeVentridens intertextus – Pyramid DomeVentridens ligera – Globose DomeVetericaris chaceorumPseudanophthalmus vicarius – Vicariant Cave BeetleFontigens morrisoni – Virginia springsnailVirginia valeriae – Smooth Earth SnakeVitronura giselaeVitropyrgus lillianaeVorticella abreviataVorticella microstomaThaumatogryllus cavicola – Vovanoes Cave CricketVulcanochthonius aaVulcanochthonius howarthiVulcanochthonius pohakuloaeWadotes calcaratusWadotes saturnusStygobromus wahkeenensis – Wahkeena Creek Groundwater AmphipodPseudanophthalmus wallacei – Wallace’s Cave BeetlePseudotremia wallaceae – Wallace’s Cave MillipedeStygobromus wardi – Ward’s Groundwater AmphipodCicurina wartoni – Warton Cave MeshweaverWatobius anderisusSphalloplana weingartneri – Weingartner’s cave flatwormStygobromus wengerorum – Wenger Cave AmphipodZygonopus krekeleri – West Virginia Blind Cave MillipedeGyrinophilus subterraneus – West Virginia Spring SalamanderPseudanophthalmus assimilis – West Wills Valley Cave BeetlePseudanophthalmus occidentalis – Western Cave BeetleEurycea spelaea – Western Grotto SalamanderStygobromus albapinus – White Pine amphipodCambarus veitchorum – White Spring Cave CrayfishBathyphantes weyeri – Wide Shield SheetweaverSatan eurystomus – Widemouth BlindcatStygobromus saltuaris – Williamette Natonal Forest Groundwater AmphipodStygobromus putealis – Wisconsin Well AmphipodPseudotremia withersi – Withers’ Cave MillipedeProcambarus orcinus – Woodville Karst Cave CrayfishWormaldia moestaStygobromus tritus – Worn Groundwater AmphipodWulfila albensVeigaia wyandottensis – Wyandotte Cave MiteCeratophysella lucifuga – Wyandotte Cave SpringtailXenolimosina siculaXenotrechus condeiXenotrechus denticollisXenylla welchi – SpringtailXironodrilus formosusXironogiton instabiliusXolotrema denotatum – Velvet WedgeXolotrema fosteri – Bladetooth WedgeXolotrema obstrictum – Sharp WedgeDiacyclops yeatmani – Yeatman’s Groundwater CopepodPseudanophthalmus youngi – Young’s Cave BeetleYunohamella lyrica – Lyric CobweaverZealeuctra narfi – Northern NeedleflyZonitoides arboreus – Bark SnailZonitoides limatulus – Dull GlossZonitoides nitidus – Black GlossZosteractis interminata – Zosteractis Cave MillipedeChoose as many as apply. A revision or a faunal survey often covers dozens. The list holds species with accounts here, which at present is obligate subterranean species only.Or name it hereIf it is not in the list.Anything elseWhat the work covers, why it matters, or the citation pasted as it appears if that is easier than filling in the fields above.Your nameYour emailSend reference