From morphology to molecules: a combined source approach to untangle the taxonomy of Clessinia (Gastropoda Odontostomidae) endemic land snails from the Dry Chaco ecoregion

摘要

BackgroundLand gastropods of the Dry Chaco merit special attention because they comprise a highly diverse but barely studied group. Clessinia Doering, 1875 are typical inhabitants of this ecoregion. The inclusion of their distribution areas into Spixia range, their shell shape similarities, and a former molecular study raised doubts on the monophyly of this genus. The present study review the species of Clessinia, under a morphological, geometric morphometrics, and molecular combined approach.