The family Plectopylidae (Gastropoda, Pulmonata) in Laos with the description of two new genera and a new species

摘要

Previously only a single plectopylid species, Helixlaomontana L. Pfeiffer, 1862 was reported from Laos. Here we erect Naggsia P????ll-Gergely & Muratov, gen. n. for Helixlaomontana based on the description of its reproductive anatomy and radula. Another species, Hunyadiscussaurini P????ll-Gergely, gen. & sp. n. is described from Northern Laos based on conchological data. Helix (Plectopylis) andersoni Blanford, 1869, which is known from the Burmese-Chinese border region, is also classified within Hunyadiscus P????ll-Gergely, gen. n. A third species, Gudeodiscus (Gudeodiscus) messageriraheemi P????ll-Gergely & Hunyadi, 2015 is reported from Laos for the first time. The new localities represent the westernmost sites of the genus Gudeodiscus. The reproductive anatomy of the latter species is described.