Duckwater pyrg

The Duckwater pyrg, scientific name Pyrgulopsis aloba, is a species of freshwater snail in the family Hydrobiidae. It is endemic to the United States and only known from two springs in the Duckwater Reservation, Nye County, Nevada.

It is a small Pyrgulopsis with a shell height of 1-1.9 mm and shell width of 1-1.7 mm.