New species of Vietnam landsnails

摘要

Landsnails are present in Vietnam with various sizes (from tiny Hypselostoma crossei at only 3mm to giant Bertia pergrandis wider than 75mm), assorted shapes (from discoidal M?llendorffia blaisei to trochoidal Ganesella acris), and attractive colors (such as Amphidromus huberi). Many Vietnam landsnails have been described, but most of them were collected in North Vietnam; the snails in South Vietnam have been poorly studied to date. In this article, four newly described species of landsnails from South Vietnam are presented with three species in the genus Amphidromus (family Camaenidae) and one species in the genus Pterocyclos (family Cyclophoridae).