Clarification of the distribution, conchological diversity, and taxonomic status of the Iberian snail Iberus globulosus C.R. Boettger, 1913 (Gastropoda: Stylommatophora: Helicidae)

The taxonomic status of Iberus globulosus has been unsatisfactorily resolved since its original description, but in 2008 a molecular phylogenetic study of the genus Iberus suggested that it could be a valid species. However, limited information on both its geographic distribution and its conchological variability has made it difficult to properly delineate the species. Our exhaustive sampling throughout the potential area of its geographic distribution and the morphological study herein, together with pre-existing genetic evidence, allow us to confirm the validity of I. globulosus. Consequently, we improve the characterization of I. globulosus by redescribing it. Additionally, we provide information on the potential for hybridization among I. globulosus and geographically and phylogenetically close congeneric species.