Davis County springsnail

The Davis County springsnail, scientific name Pyrgulopsis davisi, is a species of small freshwater snails with a gill and an operculum, aquatic gastropod mollusk in the family Hydrobiidae.

This species' natural habitat is streams. It is endemic to a tributary of Limpia Creek about 5 mi northeast of Fort Davis, Texas, United States.

Description
Pyrgulopsis davisi is a small snail that has a height of 1.8 - 2.6 mm and an ovate to narrowly conic, medium-sized shell. Its differentiated from other Pyrgulopsis in that its penial filament has a medium length lobe and medium length filament with the penial ornament consisting of an elongate, proximally bifurcate, penial gland; curved, transverse terminal and ventral glands.