Delaware County Cave Crayfish
Cambarus subterraneus Hobbs III, 1993

Taxonomy

Synonyms

Description

Diagnostic characters

Ecological class

Stygobiont

Realm

Aquatic

Troglomorphy

Troglomorphic

Maximum length

50 mm

Distribution

Type locality

Twin Cave, Delaware Co. OK

Range

Known from two counties across two states in the Ozarks karst region.

Continent

North America

Country

United States

States and provinces

Kentucky, Oklahoma

Counties

Kentucky

Fayette

Oklahoma

Delaware

Karst regions

Ozarks

Genetics

Molecular resources

6 sequences, retrieved 23 August 2026. Counts change as sequences are deposited. Search GenBank.

Download all 6 sequence records (CSV) Accession, marker, molecule type, length, GenBank definition and a direct link.

Specimens

Type material

Holotype

USNM 260249 · National Museum of Natural History, Smithsonian Institution

Paratype ×5

National Museum of Natural History, Smithsonian Institution

Collections holding material

7 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 7 specimen records (CSV) Institution, catalog number, type status and preparation. No coordinates.

Conservation and management

IUCN Red List

CR Critically Endangered B1ab(iii)+2ab(iii)

Assessed in 2010.

NatureServe

G1 Critically Imperiled

Global rank last reviewed 17 May 2010.

Subnational ranks

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.

Threats

• Agriculture - Livestock
• Pollution - Agricultural & Forestry

Other resources

Catalogue of Life

7RV5L

GBIF

2227342

ITIS

203634

iNaturalist

96616

NCBI Taxonomy

2703750

References

• Fenolio, D.B. 2011. 2011 Ozark aquatic subterranean wildlife surveys. Report to Oklahoma Biological Survey. Atlanta Botanical Garden, Atlanta, Georgia, USA. 6 pp.
• Fenolio, D.B. 2012. 2012 Ozark aquatic subterranean wildlife surveys. Report to Oklahoma Biological Survey. Atlanta Botanical Garden, Atlanta, Georgia, USA. 3 pp.
• Fenolio, D.B. 2014. 2014 Ozark aquatic subterranean wildlife surveys. Report to Oklahoma Biological Survey. San Antonio Zoo, San Antonio, Texas, USA. 21 pp.
• Fenolio, D.B. 2016. 2016 Ozark aquatic subterranean wildlife surveys. Report to Oklahoma Biological Survey. San Antonio Zoo, San Antonio, Texas, USA. 11 pp.
• Fenolio, D.B., Niemiller, M.L., Slay, M.E. & Carter, E.T. 2017. Biological inventories of caves in the Ozarks of northeastern Oklahoma: December 2017 field report. Report to Oklahoma Biological Survey. San Antonio Zoo, San Antonio, Texas, USA. 17 pp.
• Fenolio, D.B., Niemiller, M.L., Slay, M.E. & Carter, E.T. 2018. Biological inventories of caves in the Ozarks of northeastern Oklahoma: December 2018 field report. Report to Oklahoma Biological Survey. San Antonio Zoo, San Antonio, Texas, USA. 25 pp.
• Fenolio, D.B., Slay, M.E. & Niemiller, M.L. 2023b. Biological inventories of caves in the Ozarks of northeastern Oklahoma: December 2023 field report. Report to Oklahoma Biological Survey. San Antonio Zoo, San Antonio, Texas, USA. 24 pp.
• Fenolio, D.B., Slay, M.E. & Niemiller, M.L. 2023a. Biological inventories of caves in the Ozarks of northeastern Oklahoma: December 2022 field report. Report to Oklahoma Biological Survey. San Antonio Zoo, San Antonio, Texas, USA. 24 pp.
• Hobbs, H.H. Jr., Hobbs, H.H. III & Daniel, M.A. 1977. A review of the troglobitic decapod crustaceans of the Americas. Smithsonian Contributions to Zoology 244: 1–183.

How to cite this account

Data sources and funding are listed in the Acknowledgments.

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