Pyrgulopsis castaicensis is a species of very small freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae.[1]
^ abHershler R. Liu H.-P. (25 January 2010). "Two new, possibly threatened species of Pyrgulopsis (Gastropoda: Hydrobiidae) from southwestern California". Zootaxa2343: 1-17, 8 plates. preview.
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Pyrgulopsiscastaicensis is a species of very small freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae. Pyrgulopsis...