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Helminthoglypta diabloensis
Conservation status
Imperiled  (NatureServe)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Stylommatophora
Family:	Xanthonychidae
Subfamily:	Helminthoglyptinae
Genus:	Helminthoglypta
Species:	H. diabloensis
Binomial name
Helminthoglypta diabloensis (J. G. Cooper, 1869)
Synonyms
Helix diabloensis J. G. Cooper, 1869

Helminthoglypta diabloensis, or the silky shoulderband snail, is a North American species of air-breathing land snail. It is found in California, including the California Coast Ranges, Diablo Range, and other areas in Alameda, Contra Costa, Santa Clara, Yolo, Colusa and Napa Counties. The shell of H. diabloensis is described as having six to seven tightly coiled whorls.

This snail was previously described as Helix diabloensis.

References

1. Binney, William Greene (1885). A Manual of American Land Shells. U.S. Government Printing Office. p. 135.
2. Southern California Academy of Sciences (1902). Bulletin of the Southern California Academy of Sciences. LuEsther T. Mertz Library New York Botanical Garden. Los Angeles, Calif. : The Academy.
3. Pilsbry, Henry A. (1926). "Land Mollusks (Helicidae) from Central and Northern California". Proceedings of the Academy of Natural Sciences of Philadelphia. 78: 477–488. ISSN 0097-3157. JSTOR 4063960.
4. "WoRMS - World Register of Marine Species - Helminthoglypta diabloensis (J. G. Cooper, 1869)". marinespecies.org. Retrieved December 30, 2021.

Further reading

• Cooper, J.G. (1869). On the distribution and localities of west coast helicoid land shells, &c. American Journal of Conchology, 4(4): 211-24

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• NatureServe imperiled species
• Endemic molluscs of the United States
• Helminthoglypta
• Gastropods described in 1869
• Endemic fauna of California
• Helicoidea stubs