Systematic revision of chilina gray (Gastropoda: Pulmonata) from Northwestern Argentina and description of a new species

Abstract

The family Chilinidae in Argentina has been thought to include 17 species, most being found in Patagonia. All the original descriptions were based mainly on shell characteristics. The present work contains information about the shells, the radulae, and the reproductive and nervous systems in Chilinidae species from northwestern region, along with the description of a new species. This new species from Tucumán Province is characterized by the shell and a penial morphology that includes pustules and transverse lamellae with irregular contours and longitudinal folds. The taxonomic position of Chilina tucumanensis is also reviewed and a redescription of Chilina portillensis is provided. Additional information is provided on their habitats and distributions. These records in northwestern Argentina now increase the total number of species of Chilina inhabiting Argentina to 19.