New species of the dancing semislug Cryptosemelus Collinge, 1902 (Eupulmonata, Ariophantidae) from Loei Province, northeastern Thailand with a key to genera of mainland Southeast Asian semislugs and a key to species of the genus

Sakboworn Tumpeesuwan; Kitti Tanmuangpak; Chanidaporn Tumpeesuwan

doi:10.3897/zookeys.1163.103650

New species of the dancing semislug Cryptosemelus Collinge, 1902 (Eupulmonata, Ariophantidae) from Loei Province, northeastern Thailand with a key to genera of mainland Southeast Asian semislugs and a key to species of the genus

Zookeys. 2023 May 19:1163:47-59. doi: 10.3897/zookeys.1163.103650. eCollection 2023.

Authors

Sakboworn Tumpeesuwan¹, Kitti Tanmuangpak², Chanidaporn Tumpeesuwan¹

Affiliations

¹ Department of Biology, Faculty of Science, Mahasarakham University, Kantharawichai District, Maha Sarakham 44150, Thailand.
² Palaeontological Research and Education Centre, Mahasarakham University, Kantharawichai District, Maha Sarakham 44150, Thailand.

Abstract

In this study, we describe a new dancing semislug from a limestone hill area in northeastern Thailand. Cryptosemelusnigersp. nov. differs from the three recognized congener species from western and southern Thailand, due to differences in their body and shell lobes coloration, appearance of penial caecum, shape and surface texture of penis and epiphallus, and radula formula and morphology.

Keywords: Genital system; karst topography; limestone hill; mantle extensions; protective behavior; shell lobes.

Sakboworn Tumpeesuwan, Kitti Tanmuangpak, Chanidaporn Tumpeesuwan.

Grants and funding

Thailand Science Research and Innovation (TSRI)