Siriboon Thanit, Sutcharit Chirasak, Naggs Fred, Panha Somsak
Biological Science Program, Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
Zookeys. 2013 Apr 11(287):41-57. doi: 10.3897/zookeys.287.4572. Print 2013.
Three new species of the streptaxid snail genus Perrottetia are described from north and northeastern Thailand, Perrottetia aquilonaria sp. n., Perrottetia dermapyrrhosa sp. n. and Perrottetia phuphamanensis sp. n. Each species is endemic to a single or a few limestone mountain ranges. The species are characterized by the morphology of their genital organs, as well as by shell characters. Perrottetia aquilonaria sp. n. has a club shaped distal penis and large penial hooks are present and penial papillae cover almost the entire penial hook portion; adjacent areas possess low reticulated folds. Perrottetia dermapyrrhosa sp. n. has a long genital atrium and the penial sheath is about two-thirds of the penis length. Penial hooks are long, scattered and sunken into deep ovate hollows; vaginal hooks are present. Perrottetia phuphamanensis sp. n. has a rounded and protruded shell periphery. The aperture is subcircular, peristome is thick and the second parietal lamella is adjacent to the first parietal lamella; a basal lamella is the smaller than in the other Thai species.
从泰国北部和东北部地区发现了链形蜗牛属（Perrottetia）的三个新物种，分别是北方链形蜗牛（Perrottetia aquilonaria sp. n.）、皮氏链形蜗牛（Perrottetia dermapyrrhosa sp. n.）和普发曼链形蜗牛（Perrottetia phuphamanensis sp. n.）。每个物种都仅分布于单个或少数几个石灰岩山脉。这些物种的特征在于其生殖器官的形态以及贝壳特征。北方链形蜗牛（Perrottetia aquilonaria sp. n.）的阴茎远端呈棒状，有大型阴茎钩，阴茎乳头几乎覆盖整个阴茎钩部分；相邻区域有低网状褶皱。皮氏链形蜗牛（Perrottetia dermapyrrhosa sp. n.）有一个长的生殖窦，阴茎鞘约为阴茎长度的三分之二。阴茎钩长，分散且深陷于卵形凹陷中；有阴道钩。普发曼链形蜗牛（Perrottetia phuphamanensis sp. n.）的贝壳周边呈圆形且突出。壳口近圆形，口缘厚，第二块顶壁板与第一块顶壁板相邻；基部板比其他泰国物种的小。
