Pyrgulopsis carinifera explained

Pyrgulopsis carinifera is a species of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Hydrobiidae.

This species' natural habitat is springs. It is endemic to springs in the Moapa Valley, southern Nevada, United States.^[1]

Description

Pyrgulopsis carinifera is a small snail that has a height of 3.8mm5mm and a trochoid shell. Its differentiated from other Pyrgulopsis in that its penial filament has a medium, distally bifurcated lobe and medium length filament with the penial ornament consisting of a fragmented terminal gland.

Taxonomy

Pyrgulopsis carinifera was originally described as Fluminicola avernalis carinifera in 1935. In 1994, it was transferred to the genus Pyrgulopsis.

References

• Hershler. Robert. Liu. Hsiu-Ping. Gustafson. Daniel L.. A second species of Pyrgulopsis (Hydrobiidae) from the Missouri River basin, with molecular evidence supporting faunal origin through Pliocene stream capture across the northern continental divide. Journal of Molluscan Studies. November 2008. 74. 4. 403–413. 10.1093/mollus/eyn028. free.

Notes and References

1. Book: Hershler. Robert. A Review of the North American Freshwater Snail Genus Pyrgulopsis (Hydrobiidae). registration. 1994. Smithsonian Institution Press. Washington, DC.