Pyrgulopsis aardahli, commonly known as the Benton Valley springsnail, is a species of freshwater snails in the family Hydrobiidae. This species' natural habitat is springs. It is endemic to a spring on the Bramlette Ranch, Mono County, California, United States. Description Pyrgulopsis aardahli is a small snail that has a height of and ovate to conical shell. Its differentiated from other Pyrgulopsis in that its penis has a very small lobe and short filament with the penial ornament consisting of a small, circular terminal gland and a stalked ventral gland. References aardahli Molluscs of the United States Endemic fauna of California Freshwater animals of North America Gastropods described in 1989