False Sword-tailed Cave Amphipod
Bactrurus pseudomucronatus Koenemann & Holsinger, 2001
Taxonomy
| Kingdom | Animalia |
|---|---|
| Phylum | Arthropoda |
| Subphylum | Crustacea |
| Class | Malacostraca |
| Order | Amphipoda |
| Family | Crangonyctidae |
| Genus | Bactrurus |
| Species | Bactrurus pseudomucronatus Koenemann & Holsinger, 2001 |
Description
Diagnostic characters
- Ecological class
- Stygobiont
- Realm
- Aquatic
- Troglomorphy
- Troglomorphic
Distribution
Range
Known from six counties across two states in the Ozarks karst region.
Continent
North America
Country
United States
States and provinces
Arkansas, Missouri
Counties
- Arkansas
- Lawrence, Randolph
- Missouri
- Carter, Douglas, Oregon, Shannon
Karst regions
Ozarks
Genetics
Molecular resources
| Marker | Molecule | Sequences | Length | Exemplar |
|---|---|---|---|---|
| 16S | mitochondrial | 1 | 271-271 bp | KF430292.1 |
| 18S | nuclear | 1 | 2319-2319 bp | AF202985.1 |
| 28S | nuclear | 1 | 310-310 bp | KF430323.1 |
| COI | mitochondrial | 1 | 242-242 bp | KF430262.1 |
| H3 | nuclear | 1 | 354-354 bp | KF484723.1 |
5 sequences, retrieved 23 August 2026. Counts change as sequences are deposited. Search GenBank.
Download all 5 sequence records (CSV) Accession, marker, molecule type, length, GenBank definition and a direct link.
Specimens
Type material
- Holotype
- USNM 296423 · National Museum of Natural History, Smithsonian Institution
- Allotype
- USNM 1011862 · National Museum of Natural History, Smithsonian Institution
- Paratype
- USNM 1011863 · National Museum of Natural History, Smithsonian Institution
- Paratype
- ZMA.CRUS.A.204945 · Naturalis Biodiversity Center
Collections holding material
| Institution | Lots |
|---|---|
| National Museum of Natural History, Smithsonian Institution | 24 |
| Naturalis Biodiversity Center | 1 |
25 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 25 specimen records (CSV) Institution, catalog number, type status and preparation. No coordinates.
Conservation and management
NatureServe
G2G3 Imperiled to Vulnerable
Global rank last reviewed 14 October 2004.
Subnational ranks
- Arkansas
- S1 Critically Imperiled
- Missouri
- S2 Imperiled
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
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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