3.4 Genus Sinoderces Li & Li, gen. nov.

Type species: Sinoderces nawanensis Li & Li, sp. nov.

Etymology. The genus name is a combination of “ Sino ” (refers to Chinese) with the second part of “ Psiloderces ”. Gender is masculine.

Diagnosis. The new genus is distinguished (together with Thaiderces) from all other genera by the absence of an apical protrusion on the male cymbium. It is distinguished from Thaiderces by the presence of one tooth on the cheliceral retromargin and the long embolus of the genital bulb.

Description. Cheliceral promargin with lamina, retromargin with one tooth or denticle; genital bulb with long embolus, conductor present or absent, if present then embolus and conductor separated basally; female with two pairs of elongate, curved spermathecae (Fig. 10A).

Distribution. China (Guangxi Zhuang Autonomous Region)

Species composition. Sinoderces nawanensis Li & Li, sp. nov., Sinoderces exilis (Wang & Li, 2013) comb. nov.