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Stenotrema depilatum
A Great Smoky slitmouth shell collected in Sevier County, Tennessee
Conservation status
Imperiled  (NatureServe)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Stylommatophora
Family:	Polygyridae
Genus:	Stenotrema
Species:	S. depilatum
Binomial name
Stenotrema depilatum (Pilsbry, 1895)
Synonyms
Polygyra (Stenotrema) stenotrema var. depilata Pilsbry, 1895 (original combination)

Stenotrema depilatum, also known as the Great Smoky slitmouth, is a rare, range-restricted species of pulmonate land snail in the family Polygyridae.

Physical appearance

The Great Smoky slitmouth possesses a globose, lightly wrinkled shell with an elevated spire, lacking the fine hairs typical of species in the Stenotrema genus. Biologist Henry Pilsbry described the base of the shell as having "the luster of silk." The parietal tooth is small, and the lip is shallow and wide.

Ecology

The Great Smoky slitmouth is endemic to the southeastern United States, where it can be found in eastern-southeastern Tennessee and western North Carolina. It has been found in Sevier and Monroe Counties in Tennessee and in Graham and Swain Counties in North Carolina. Due to its rarity and a lack of knowledge surrounding population size and range, the species is listed as imperiled in both states. The majority of occurrences have been recorded in the Great Smoky Mountains National Park.

This species is most commonly found at elevations above 1,000 m (3,280.84 ft) in dense hardwood forests under wet leaf litter or moss. It is sometimes found with Stenotrema altispira.

References

1. Pilsbry, H. A. (1895). New forms of American Zonitidae and Helicidae. The Nautilus. 9(2): 16.
2. LeGrand, H.E., Jr., S.P. Hall, S.E. McRae, and J.T. Finnegan. 2006. Natural Heritage Program List of the Rare Animal Species of North Carolina. North Carolina Natural Heritage Program, Raleigh, North Carolina. 104 pp.
3. ^ Hubricht, Leslie (1985). The distributions of the native land mollusks of the Eastern United States. Field Museum of Natural History. 40.
4. "Stenotrema depilatum". NatureServe Explorer. Retrieved 2025-01-19.
5. Dourson, D.C. 2013. Land snails of the Great Smoky Mountains National Park and southern Appalachians. Goatslug Publications, Bakersville, NC. 336 pp.

• NatureServe imperiled species
• Molluscs of North America
• Polygyridae
• Molluscs described in 1895