Sharp Wedge
Xolotrema obstrictum (Say, 1821)

Taxonomy

Kingdom	Animalia
Phylum	Mollusca
Class	Gastropoda
Order	Stylommatophora
Family	Polygyridae
Genus	Xolotrema
Species	Xolotrema obstrictum (Say, 1821)

Description

Diagnostic characters

Ecological class: Trogloxene
Realm: Terrestrial

Distribution

Range

Known from three counties in Tennessee.

Continent

North America

Country

United States

States and provinces

Tennessee

Counties

Tennessee: Cumberland, Sequatchie, Warren

Conservation and management

NatureServe

G4 Apparently Secure

National ranks

United States: N4 Apparently Secure

Subnational ranks

Tennessee: S5 Secure
Louisiana: SH Possibly Extirpated
Mississippi: SH Possibly Extirpated
Illinois: SNR Unranked
Indiana: S1 Critically Imperiled
Kentucky: S3 Vulnerable
Alabama: SNR Unranked

Ranks looked up 3 September 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.

References

Lewis, J.J. 2005a. A biological inventory of caves of the Cumberland Plateau. Tennessee Chapter Cave Program, The Nature Conservancy, Nashville, Tennessee, USA. 156 pp.

This account was last revised 6 September 2026. Conservation ranks were looked up 3 September 2026.

How to cite this account

Xolotrema obstrictum (Say, 1821). Cave Biology Data Portal, account SP-3062. https://cavebiology.org/species/xolotrema-obstrictum/ (accessed 22 October 2026).

Data sources and funding are listed in the Acknowledgments.

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