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Cave Biology Data Portal
Subterranean biodiversity of North America and around the globe
AnimaliaArthropodaCrustaceaMalacostracaIsopodaAsellidaePseudobaicalasellus

Incurved Cave Isopod
Pseudobaicalasellus incurvus (Steeves & Holsinger, 1968)

Taxonomy

Kingdom Animalia
Phylum Arthropoda
Subphylum Crustacea
Class Malacostraca
Order Isopoda
Family Asellidae
Genus Pseudobaicalasellus
Species Pseudobaicalasellus incurvus (Steeves & Holsinger, 1968)

Synonyms

  • Asellus incurvus Steeves & Holsinger, 1968 (prior combination, CoL)
  • Conasellus incurvus (Steeves & Holsinger, 1968) (prior combination, CoL)
  • Caecidotea incurva (Steeves & Holsinger, 1968) (subjective synonym, CoL)

Description

Diagnostic characters

Ecological class
Stygobiont
Realm
Aquatic
Troglomorphy
Troglomorphic

Distribution

Type locality

Berry Cave, Roane Co. TN

Range

Known from four counties across two states in the Appalachians karst region.

Continent

North America

Country

United States

States and provinces

Tennessee, Virginia

Counties

Tennessee
Blount, Roane, Sevier
Virginia
Smyth

Karst regions

Appalachians

Conservation and management

NatureServe

G2G4 Imperiled to Apparently Secure

G1G2▲G3G4▲G5

Global rank last reviewed 2002.

Subnational ranks

Tennessee
S1 Critically Imperiled
Virginia
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

Catalogue of Life
CTKQK
GBIF
4303943
iNaturalist
1664142

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
  • Mays, J.D. 2002. A systematic approach to sampling the arthropod assemblage of Gregorys Cave, Great Smoky Mountains National Park. Western Carolina University, Cullowhee, North Carolina, USA. 83 pp.
  • Niemiller, M.L. & Zigler, K.S. 2013. Patterns of cave biodiversity and endemism in the Appalachians and Interior Plateau of Tennessee, USA. PLOS One 8: e64177. doi:10.1371/journal.pone.0064177
  • Nolfi, D.C. 2009. Review and assessment of known cavernicoles and rare epigean biology of karst and caves, Great Smoky Mountains National Park. Proceedings of the 15th International Congress of Speleology, Kerrville, Texas, USA, Volume 3: 1323–1328.
  • Reeves, W.K. 2000. Invertebrate cavernicoles of the Great Smoky Mountains National Park, USA. Journal of the Elisha Mitchell Scientific Society 116: 334–343. https://www.jstor.org/stable/24335885. details
  • Steeves, H.R. & Holsinger, J.R. 1968. Biology of three new species of troglobitic asellids from Tennessee. The American Midland Naturalist 80: 75–83. doi:10.2307/2423604
  • Wallace, R.L. 1984. Biological survey report of Great Smoky Mountains National Park caves. Great Smoky Mountains National Park, U.S. National Park Service, Gatlinburg, Tennessee, USA. 33 pp.
  • Wallace, R.L. 1990b. Biological survey report of the Great Smoky Mountains National Park caves. Great Smoky Mountains National Park, U.S. National Park Service, Gatlinburg, Tennessee, USA. 34 pp.

This account was last revised 28 August 2026. Conservation ranks were looked up 23 August 2026.

How to cite this account

Pseudobaicalasellus incurvus (Steeves & Holsinger, 1968). Cave Biology Data Portal, account SP-1281. https://cavebiology.org/species/pseudobaicalasellus-incurvus/ (accessed 18 October 2026).
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Cave Biology Data Portal

Species accounts, distributions, and conservation status for the subterranean fauna of North America and around the globe, with resources for the cave and karst research community.

Text and data CC BY 4.0. Images all rights reserved unless stated.

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