Whittenia, a new genus of land snails from Perak, Peninsular Malaysia (Gastropoda: Diplommatinidae)

This paper proposes a new genus, Whittenia, for a group of irregularly coiled land snail species hitherto placed in the genus Opisthostoma. Whittenia differs from congeners in Diplommatinidae based on both molecular phylogeny and shell morphology. We reassign two previously described species (Opisthostoma vermiculum and O. gittenbergeri) to Whittenia. Both species are endemic to the limestone karsts of Kinta Valley in Perak, Peninsular Malaysia