Caecidotea dimorpha (Mackin & Hubricht, 1940)
Taxonomy
| Kingdom | Animalia |
|---|---|
| Phylum | Arthropoda |
| Subphylum | Crustacea |
| Class | Malacostraca |
| Order | Isopoda |
| Family | Asellidae |
| Genus | Caecidotea |
| Species | Caecidotea dimorpha (Mackin & Hubricht, 1940) |
Synonyms
- Conasellus dimorphus (Mackin & Hubricht, 1940) (subjective synonym, CoL)
Description
Diagnostic characters
- Ecological class
- Stygobiont
- Realm
- Aquatic
- Troglomorphy
- Troglomorphic
- Maximum length
- 8 mm
Distribution
Type locality
Seep near Greenville, Wayne Co., MO
Range
Known from nine counties across three states in the Ozarks karst region.
Continent
North America
Country
United States
States and provinces
Arkansas, Indiana, Missouri
Counties
- Arkansas
- Baxter, Jackson, Marion, Pope, Searcy, Stone, Van Buren
- Indiana
- Crawford
- Missouri
- Wayne
Karst regions
Ozarks
Specimens
Type material
- Syntype
- USNM 76269 · National Museum of Natural History, Smithsonian Institution
- Paratype
- USNM 108622 · National Museum of Natural History, Smithsonian Institution
Collections holding material
| Institution | Lots |
|---|---|
| National Museum of Natural History, Smithsonian Institution | 17 |
17 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 17 specimen records (CSV) Institution, catalog number, type status and preparation. No coordinates.
Conservation and management
NatureServe
G2G3 Imperiled to Vulnerable
Global rank last reviewed 17 January 2023.
Subnational ranks
- Arkansas
- S2 Imperiled
- Missouri
- S1S3 Critically Imperiled to Vulnerable
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
- Fleming, L.E. 1972. The evolution of the eastern North American isopods of the genus Asellus (Crustacea: Asellidae). Part I. International Journal of Speleology 4: 221–256. https://digitalcommons.usf.edu/cgi/viewcontent.cgi?article=1605&context=ijs. details
- Lewis, J.J. 1988. The systematics, zoogeography and life history of the troglobitic isopods of the Interior Plateaus of the eastern United States. University of Louisville, Louisville, Kentucky, USA. 281 pp.
- McDaniel, V.R. & Smith, K.L. 1976. Cave fauna of Arkansas: selected invertebrate taxa. Journal of the Arkansas Academy of Science 30: 57–60. https://scholarworks.uark.edu/jaas/vol30/iss1/22. details
- Nicholas, G. 1960. Checklist of macroscopic troglobitic organisms of the United States. The American Midland Naturalist 64: 123–160. doi:10.2307/2422897
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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