Bifurcated Cave Amphipod
Stygobromus bifurcatus (Holsinger, 1967)
Taxonomy
| Kingdom | Animalia |
|---|---|
| Phylum | Arthropoda |
| Subphylum | Crustacea |
| Class | Malacostraca |
| Order | Amphipoda |
| Family | Crangonyctidae |
| Genus | Stygobromus |
| Species | Stygobromus bifurcatus (Holsinger, 1967) |
Synonyms
Stygonectes bifurcatus Holsinger, 1967
Description
Diagnostic characters
- Ecological class
- Stygobiont
- Realm
- Aquatic
- Troglomorphy
- Troglomorphic
Distribution
Range
Known from Texas in the Edwards Plateau and Balcones karst region.
Continent
North America
Country
United States
States and provinces
Texas
Counties
County-level records have not been compiled for this taxon. Distribution is recorded at state and karst-region level.
Karst regions
Edwards Plateau and Balcones
Genetics
Molecular resources
| Marker | Molecule | Sequences | Length | Exemplar |
|---|---|---|---|---|
| COI | mitochondrial | 2 | 501-501 bp | JQ358899.1 |
| ITS | nuclear | 2 | 212-212 bp | JQ363740.1 |
4 sequences, retrieved 23 August 2026. Counts change as sequences are deposited. Search GenBank.
Download all 4 sequence records (CSV) Accession, marker, molecule type, length, GenBank definition and a direct link.
Specimens
Type material
- Holotype
- USNM 141720 · National Museum of Natural History, Smithsonian Institution
- Allotype
- USNM 141721 · National Museum of Natural History, Smithsonian Institution
- Paratype ×4
- National Museum of Natural History, Smithsonian Institution
Collections holding material
| Institution | Lots |
|---|---|
| University of Texas, Biodiversity Center, Entomology Collection | 42 |
| National Museum of Natural History, Smithsonian Institution | 25 |
| Edwards Aquifer Research and Data Center, Texas State University | 10 |
77 cataloged lots in 3 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 77 specimen records (CSV) Institution, catalog number, type status and preparation. No coordinates.
Conservation and management
IUCN Red List
VU Vulnerable D2
Assessed in 1996.
NatureServe
G3G4 Vulnerable to Apparently Secure
Global rank last reviewed 21 August 2002.
Subnational ranks
- Texas
- S3 Vulnerable
State and federal status
Not listed under the U.S. Endangered Species Act
Other resources
How to cite this account
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.