clade Hypsogastropoda Parafossarulus striatulus is a species of freshwater snail with gills and an operculum, an aquatic prosobranch gastropod mollusk in the family Bithyniidae. Parafossarulus striatulus is the type species of the genus Parafossarulus. == Distribution == This species occurs in: == Parasites == Parafossarulus striatulus is a host f...