taxonID	type	description	language	source
2D76BE333DC0553E8CB91F12CE5A4AF2.taxon	description	Figs 1, 2, 3, 4	en	Tumpeesuwan, Sakboworn, Tanmuangpak, Kitti, Tumpeesuwan, Chanidaporn (2023): 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 1163: 47-59, DOI: http://dx.doi.org/10.3897/zookeys.1163.103650, URL: http://dx.doi.org/10.3897/zookeys.1163.103650
2D76BE333DC0553E8CB91F12CE5A4AF2.taxon	diagnosis	Diagnosis. Animal with blackish body, shell lobes with blackish reticulated skin (Figs 2, 3). Genitalia with very short cylindrical vagina, smooth elongated cylindrical epiphallus, without penial caecum (Fig. 4). Radula with bicuspid lateral teeth (Fig. 5 B, C).	en	Tumpeesuwan, Sakboworn, Tanmuangpak, Kitti, Tumpeesuwan, Chanidaporn (2023): 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 1163: 47-59, DOI: http://dx.doi.org/10.3897/zookeys.1163.103650, URL: http://dx.doi.org/10.3897/zookeys.1163.103650
2D76BE333DC0553E8CB91F12CE5A4AF2.taxon	description	Description. (empty shells = 8, living specimen = 4) Shell (Fig. 2 A). Shell globose, small size (shell height 6.03 + / - 0.71.00 mm, shell width 9.72 + / - 1.32 mm), shell imperforate, thin, smooth, dark brown color; transparence, aperture large (aperture height 5.28 + / - 0.68 mm and aperture width 5.71 + / - 0.81 mm). Genital system (N = 3) (Fig. 4). Atrium (at) short. Penis rather long and cylindrical, with thin penial sheath covering entire penis. Penial retractor muscle (prm) present, short, thin and attached at junction of e 1 and e 2. Epiphallus (e 1 + e 2) length is slightly equal to penis length, surface smooth, e 1 cylindrical and gradually smaller in diameter, e 2 cylindrical and larger than e 1. Flagellum absent. Vas deferens long. Vagina is shorter than penis, cylindrical. Gametolytic duct (gd) thickened at base, gametolytic sac (gs) swollen gland at distal end. Free oviduct (fo) is shorter than vagina. Uterus and prostate gland long and stout. Radula (N = 3) (Fig. 5). Teeth arranged in a wide V-shape with half row formula: 1 - 7 - 70 + teeth. Central teeth symmetric tricuspid. Lateral teeth and marginal teeth gradually changing from broad to narrow bicuspid. External appearance (Figs 2 B, 3). Living semislug with reticulated skin, blackish to dark body marked by conspicuous grooves running downward. Four mantle extensions well developed and same color body. Shell lobes do not cover entire shell. Caudal horn absent.	en	Tumpeesuwan, Sakboworn, Tanmuangpak, Kitti, Tumpeesuwan, Chanidaporn (2023): 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 1163: 47-59, DOI: http://dx.doi.org/10.3897/zookeys.1163.103650, URL: http://dx.doi.org/10.3897/zookeys.1163.103650
2D76BE333DC0553E8CB91F12CE5A4AF2.taxon	etymology	Etymology. The species name " niger " is derived from Latin word, meaning " black " referring to blackish body and mantle extensions.	en	Tumpeesuwan, Sakboworn, Tanmuangpak, Kitti, Tumpeesuwan, Chanidaporn (2023): 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 1163: 47-59, DOI: http://dx.doi.org/10.3897/zookeys.1163.103650, URL: http://dx.doi.org/10.3897/zookeys.1163.103650
2D76BE333DC0553E8CB91F12CE5A4AF2.taxon	distribution	Distribution, habitat and behavior observations. Cryptosemelus niger sp. nov. is a species restricted to the dry evergreen forest that covers the Phu Pha Lom limestone area, Loei Province, Thailand. We searched after rain and found the specimens normally hiding on the ground and in the leaf litter. When the snails were disturbed, they escaped by quickly flipping and waging their tail. Information on its natural predators is unknown, but the carnivorous land snails, Discartemon sp., Oophana sp. (Streptaxidae), and Sinoennea loeiensis Tanmuangpak & S. Tumpeesuwan, 2015 (Diapheridae) were found in the same locality (Tanmuangpak et al. 2012; Tanmuangpak et al. 2015; Tanmuangpak 2016).	en	Tumpeesuwan, Sakboworn, Tanmuangpak, Kitti, Tumpeesuwan, Chanidaporn (2023): 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 1163: 47-59, DOI: http://dx.doi.org/10.3897/zookeys.1163.103650, URL: http://dx.doi.org/10.3897/zookeys.1163.103650
