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Subterranean biodiversity of North America and around the globe

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

Rappahannock Spring Amphipod
Stygobromus foliatus Holsinger, 2011

Taxonomy

Kingdom Animalia
Phylum Arthropoda
Subphylum Crustacea
Class Malacostraca
Order Amphipoda
Family Crangonyctidae
Genus Stygobromus
Species Stygobromus foliatus Holsinger, 2011

Description

Diagnostic characters

Ecological class
Stygobiont
Realm
Aquatic
Troglomorphy
Troglomorphic

Distribution

Range

Known from two states in the Other karst region.

Continent

North America

Country

United States

States and provinces

Maryland, Virginia

Counties

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

Karst regions

Other

Genetics

Molecular resources

MarkerMoleculeSequences LengthExemplar
COI mitochondrial 1 1572-1572 bp KP693693.1
other mitochondrial 1 15563-15563 bp KU869713.1

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

Download all 2 sequence records (CSV) Accession, marker, molecule type, length, GenBank definition and a direct link.

Specimens

Type material

Holotype
USNM 1154087 · National Museum of Natural History, Smithsonian Institution
Paratype ×9
National Museum of Natural History, Smithsonian Institution

Collections holding material

InstitutionLots
National Museum of Natural History, Smithsonian Institution 10

10 cataloged lots in 1 collection. 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 10 specimen records (CSV) Institution, catalog number, type status and preparation. No coordinates.

Conservation and management

NatureServe

G2 Imperiled

G1G2▲G3G4G5

Global rank last reviewed 2 April 2009.

Subnational ranks

Maryland
S1 Critically Imperiled
Virginia
S3 Vulnerable
District of Columbia
SNR Unranked

State and federal status

Not listed under the U.S. Endangered Species Act

Other resources

Catalogue of Life
538LR
GBIF
8238508
iNaturalist
1173293
NCBI Taxonomy
1678291

How to cite this account

Stygobromus foliatus Holsinger, 2011. Cave Biology Data Portal, account SP-1018. https://cavebiology.org/species/stygobromus-foliatus/ (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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