South Sierra Nevada springsnail

The south Sierra Nevada springsnail, scientific name Pyrgulopsis giuliani, is a species of very small freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae.
This species is endemic to the Sierra Nevada in the United States. This species is threatened by habitat loss.
References

Bogan, A.E. 2000. Pyrgulopsis giuliani.
2006 IUCN Red List of Threatened Species. Downloaded on 7 August 2007.
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