Systematics of the family Plectopylidae in Vietnam with additional information on Chinese taxa (Gastropoda, Pulmonata, Stylommatophora)

Shells of Vietnamese Halongella gen. n. and Gudeodiscus species. A Halongella schlumbergeri (Morlet, 1886), MNHN 24582 (syntype of Helix (Plectopylis) schlumbergeri) B H. schlumbergeri, MNHN 24580 (syntype of Plectopylis jovia) C H. schlumbergeri, NHMUK 1922.8.29.52 (holotype of Plectopylis pilsbryana) D H. schlumbergeri, SMF 9277 (lectotype of Plectopylis hirsuta) EGudeodiscus (Veludiscus) emigrans emigrans (Möllendorff, 1901), SMF 9256 (lectotype) FG. (V.) emigrans quadrilamellatus Páll-Gergely, 2013, HNHM 97468 (holotype). Photos E and F were already published in Páll-Gergely and Hunyadi (2013). Photos: T. Deli (A, B), H. Taylor (C), S. Hof (D), E. Neubert (E) and B. Páll-Gergely (F). Scales represent 10 mm; upper scale belongs to A–B, lower scale belongs to C–F.