Kansas Well Amphipod
Bactrurus hubrichti Shoemaker, 1945
Taxonomy
| Kingdom | Animalia |
|---|---|
| Phylum | Arthropoda |
| Subphylum | Crustacea |
| Class | Malacostraca |
| Order | Amphipoda |
| Family | Crangonyctidae |
| Genus | Bactrurus |
| Species | Bactrurus hubrichti Shoemaker, 1945 |
Description
Diagnostic characters
- Ecological class
- Stygobiont
- Realm
- Aquatic
- Troglomorphy
- Troglomorphic
Distribution
Range
Known from 10 counties across four states across two karst regions.
Continent
North America
Country
United States
States and provinces
Kansas, Missouri, Oklahoma, Virginia
Counties
- Kansas
- Butler, Chautauqua, Clay, Cowley, Neosho, Riley, Shawnee
- Missouri
- Miller
- Oklahoma
- Rogers
- Virginia
- Loudoun
Karst regions
Other, Ozarks
Specimens
Type material
- Type
- USNM 80039 · National Museum of Natural History, Smithsonian Institution
Collections holding material
| Institution | Lots |
|---|---|
| National Museum of Natural History, Smithsonian Institution | 25 |
| Naturalis Biodiversity Center | 1 |
26 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 26 specimen records (CSV) Institution, catalog number, type status and preparation. No coordinates.
Conservation and management
NatureServe
G4 Apparently Secure
Global rank last reviewed 21 August 2002.
Subnational ranks
- Kansas
- S3S4 Vulnerable to Apparently Secure
- Missouri
- S1 Critically Imperiled
- Oklahoma
- S1 Critically 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
- Holsinger, J.R. & Lewis, J.J. 2025. Systematics of the subterranean amphipod genus Stygobromus (Crangonyctidae): Species of the Ozarks and adjacent regions. Journal of Cave and Karst Studies 87: 34–81. doi:10.4311/2024LSC0113
- Nicholas, G. 1960. Checklist of macroscopic troglobitic organisms of the United States. The American Midland Naturalist 64: 123–160. doi:10.2307/2422897
- Taylor, S.J. & Niemiller, M.L. 2016. Biogeography and conservation assessment of Bactrurus groundwater amphipods (Crangonyctidae) in the central and eastern United States. Subterranean Biology 17: 1–29. doi:10.3897/subtbiol.17.7298
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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