Pomacea aldersoni
Pomacea aldersoni is a South American species of freshwater snail with gills and an operculum, an aquatic gastropod mollusc in the family Ampullariidae, the apple snails. Etymology. "P. aldersoni" is named after the British conchologist and malacologist E. G. Alderson, who authored a revision of the genus "Ampullaria" in 1925. Distribution. The native distribution of "P. aldersoni" is Ecuador. It was described from thirteen specimens which were collected in Santa Barbara, about 272 km SE. of Quito, in 1939.