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Cave Biology Data Portal
Subterranean biodiversity of North America and around the globe
AnimaliaArthropodaCrustaceaMalacostracaDecapodaAtyidaePalaemonias

Alabama Cave Shrimp
Palaemonias alabamae Smalley, 1961

Taxonomy

Kingdom Animalia
Phylum Arthropoda
Subphylum Crustacea
Class Malacostraca
Order Decapoda
Family Atyidae
Genus Palaemonias
Species Palaemonias alabamae Smalley, 1961

Description

Diagnostic characters

Ecological class
Stygobiont
Realm
Aquatic
Troglomorphy
Troglomorphic
Maximum body length
20 mm

Distribution

Type locality

Shelta Cave, Madison Co. AL

Range

Known from Alabama in the Interior Low Plateau karst region.

Continent

North America

Country

United States

States and provinces

Alabama

Counties

County-level records have not been compiled for this taxon. Distribution is recorded at state and karst-region level.

Karst regions

Interior Low Plateau

Genetics

Molecular resources

MarkerMoleculeSequences LengthExemplar
28S nuclear 6 535-1175 bp PX211068.1
16S mitochondrial 4 539-540 bp FN995381.1
H3 nuclear 4 328-328 bp FN995520.1

14 sequences, retrieved 23 August 2026. Counts change as sequences are deposited. Search GenBank.

Download all 14 sequence records (CSV) Accession, marker, molecule type, length, GenBank definition and a direct link.

Specimens

Type material

Holotype
USNM 107028 · National Museum of Natural History, Smithsonian Institution
Paratype
USNM 107029 · National Museum of Natural History, Smithsonian Institution

Collections holding material

InstitutionLots
Auburn University Museum of Natural History 3
National Museum of Natural History, Smithsonian Institution 2

5 cataloged lots in 2 collections. Compiled from GBIF and not an exhaustive census: many collections are not yet digitised, and holdings are added continually. Search GBIF for specimen records.

Download all 5 specimen records (CSV) Institution, catalog number, type status and preparation. No coordinates.

Conservation and management

IUCN Red List

EN Endangered B1ab(iii)

EXEWCREN▲VUNTLC

Assessed in 2012.

NatureServe

G1 Critically Imperiled

G1▲G2G3G4G5

Global rank last reviewed 31 May 2024.

Subnational ranks

Alabama
S1 Critically Imperiled

State and federal status

Endangered under the U.S. Endangered Species Act listed 1989

Federal: Endangered

Threats

  • Urbanization - Residential
  • Urbanization - Comm. & Industrial
  • Oil & Gas Drilling
  • Pollution -Sewage or Urban Wastewater
  • Pollution - Commercial/Industrial
  • Pollution - Agricultural & Forestry

Other resources

Catalogue of Life
8VBQZ
GBIF
2223015
ITIS
97246
iNaturalist
108240
NCBI Taxonomy
859809

How to cite this account

Palaemonias alabamae Smalley, 1961. Cave Biology Data Portal, account SP-1156. https://cavebiology.org/species/palaemonias-alabamae/ (accessed 3 September 2026).

Data sources and funding are listed in the Acknowledgments.

Spotted something wrong on this page? Report a correction. Accounts are compiled from many sources and corrections from people who know the group are the most useful email we get.

Cave Biology Data Portal

Species accounts, distributions, and conservation status for the subterranean fauna of North America and around the globe, with resources for the cave and karst research community.

Text and data CC BY 4.0. Images all rights reserved unless stated.

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