Thaiderces F.Y. Li & S.Q. Li, 2017

Chang, Wan-Jin & Li, Shuqiang, 2019, Fourteen new species of the spider genus Thaiderces from Southeast Asia (Araneae, Psilodercidae), ZooKeys 869, pp. 103-146 : 103

Genus Thaiderces F.Y. Li & S.Q. Li, 2017

Type species.

Thaiderces jian from Thailand, details and figures of the type species as in figs 1A, 2A, and Liu et al. (2017: figs 11-12).

Emended diagnosis.

Thaiderces resembles Sinoderces by the absence of an apical protrusion on the cymbium, cheliceral lamina with 3 triangular extensions, shallow fovea, and clypeus and labium slanting, but it can be differentiated by the following combination of characters: 1) presence of embolic stalk or embolic ‘stubble’ (vs. absence of embolic stalk or ‘stubble’); 2) absence of setae on ocular region (vs. presence of numerous setae); 3) embolus shorter than bulb (vs. embolus longer than bulb); 4) absence of conductor (vs. presence); and 5) 3 retromarginal cheliceral teeth (vs. one retromarginal tooth).

Composition.

Thaiderces jian (♂♀) (the type species), T. vulgaris (Deeleman-Reinhold, 1995) (♂♀), T. shuzi sp. nov. (♂♀), T. peterjaegeri sp. nov. (♂), T. ganlan sp. nov. (♂♀), T. ngalauindahensis sp. nov. (♂), T. yangcong sp. nov. (♂♀), T. tuoyuan sp. nov. (♂♀), T. fengniao sp. nov. (♂♀), T. haima sp. nov. (♂♀), T. thamphadaengensis sp. nov. (♂♀), T. thamphrikensis sp. nov. (♂♀), T. jiazi sp. nov. (♀), T. zuichun sp. nov. (♀), T. chujiao sp. nov. (♀), and T. miantiao sp. nov. (♀).

Distribution.

Thailand, Myanmar, and Sumatra Island of Indonesia.