// Workers AI · dad joke modeWhat did the varicose rocksnail say? Shell shocked.

Varicose rocksnail
Conservation status
	; Least Concern (IUCN 3.1)
	; Apparently Secure (NatureServe)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	incertae sedis
Family:	Pleuroceridae
Genus:	Lithasia
Species:	L. verrucosa
Binomial name
	Lithasia verrucosa; (Rafinesque, 1820)
Synonyms
	List Angitrema verrucosa (Rafinesque, 1820) ; Goniobasis aequalis (Haldeman, 1842) ; Goniobasis auricoma Lea, 1862 ; Goniobasis procissa Tryon, 1864 ; Goniobasis stewardsoniana Lea, 1862 ; Melania aequalis Haldeman, 1842 ; Melania fusiformis Lea, 1841 ; Melania holstonia Lea, 1841 ; Melania nupera Say, 1829 ; Melania procissa Anthony, 1854 ; Melania proscissa Anthony, 1854 ; Melanopsis semigranulosa Deshayes, 1832 ; Paludina humerosa Anthony, 1860 ; Pleurocera verrucosa Rafinesque, 1820;

The varicose rocksnail also known as the verrucose file snail, scientific name Lithasia verrucosa, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species is endemic to the United States.

References

↑ Cordeiro, J.; Perez, K. (2011). "Lithasia verrucosa". IUCN Red List of Threatened Species. 2011 e.T12133A3324814. doi:10.2305/IUCN.UK.2011-2.RLTS.T12133A3324814.en. Retrieved 15 November 2021.
↑ NatureServe. "Lithasia verrucosa". NatureServe Explorer. Arlington, Virginia. Retrieved 30 March 2026.
↑ Bieler R, Bouchet P, Gofas S, Marshall B, Rosenberg G, La Perna R, Neubauer TA, Sartori AF, Schneider S, Vos C, ter Poorten JJ, Taylor J, Dijkstra H, Finn J, Bank R, Neubert E, Moretzsohn F, Faber M, Houart R, Picton B, Garcia-Alvarez O (eds.). "Lithasia verrucosa (Rafinesque, 1820)". MolluscaBase. World Register of Marine Species. Retrieved 1 April 2026.

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