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 five counties across two states in the Other karst region.
Continent
North America
Country
United States
States and provinces
Maryland, Virginia
Counties
- Maryland
- Charles, Saint Mary's
- Virginia
- Caroline, King and Queen, Westmoreland
Karst regions
Other
Genetics
Molecular resources
| Marker | Molecule | Sequences | Length | Exemplar |
|---|---|---|---|---|
| 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
| Institution | Lots |
|---|---|
| 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
Global rank last reviewed 2 April 2009.
Subnational ranks
- Maryland
- S1 Critically Imperiled
- Virginia
- S3 Vulnerable
- District of Columbia
- SNR Unranked
Ranks looked up 23 August 2026. Conservation status changes, and a rank here is as current as that date and no more.
State and federal status
Not listed under the U.S. Endangered Species Act.
Other resources
References
- Aunins, A.W., Nelms, D.L., Hobson, C.S. & King, T.L. 2016. Comparative mitogenomic analyses of three North American stygobiont amphipods of the genus Stygobromus (Crustacea: Amphipoda). Mitochondrial DNA Part B 1: 560–563. doi:10.1080/23802359.2016.1174086
- Benito, J.B., Porter, M.L. & Niemiller, M.L. 2021. The mitochondrial genomes of five spring and groundwater amphipods of the family Crangonyctidae (Crustacea: Amphipoda) from eastern North America. Mitochondrial DNA Part B 6: 1662–1667. doi:10.1080/23802359.2021.1926350
This account was last revised 28 August 2026. Conservation ranks were looked up 23 August 2026.
How to cite this account
Data sources and funding are listed in the Acknowledgments.
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