First record of Pseudosuccinea columella (Say, 1817) from Salta province, northwest Argentina (Mollusca: Gastropoda: Lymnaeidae)

Pseudosuccinea columella (Say, 1817) is a widely distributed freshwater snail of medical and veterinary interest because it is the first intermediate host of Fasciola hepatica (Linnaeus, 1758). It is an invasive species in the Neotropical region and in Argentina is known from the central and the northeast regions. Pseudosuccinea columella is reported for the first time from Salta province, northwest Argentina. This new record, the westernmost in Argentina, suggests that P. columella continues to increase its geographic distribution in the Neotropical region. Although P. columella is naturally infected with F. hepatica in northeast Argentina, snails from the new location in Salta province were not found to be infected