Genus Singaporemma Shear, 1978

Singaporemma Shear, 1978: 36 . Type species by original designation Singaporemma singularis Shear, 1978 (= S. singulare Shear, 1978) from Singapore.

Rediagnosis. Males of Singaporemma are distinguished from those of the other genera of Tetrablemmidae by the following combination of characters: lack of a modified process on the clypeus and chelicerae (Figs 1G, 3G), swollen palpal tibia (Figs 2A–B, 4D–E, 6A–H), oval bulb with a long embolus originating from the mesial side of the bulb (Fig. 6A–H), and a sharp embolic tip (if not, bifurcate) (Fig. 6a–h). Diagnostic characters for the females are: small, oval epigynal pit opening at the margin of the pulmonary plate (Figs 2D, 5B, 7C), vulva with distinctly sclerotized copulatory channel, paired vulval ducts with sclerotized walls at their base (Figs 2E, 5D, 7A–C, 8A–B, 9A–B), the central process and inner vulval plate at least one present (Figs 2E, 7A–B, 9A–B), or both (Figs 5C–D, 7C, 8A–B).

Composition. S. adjacens Lehtinen, 1981, S. banxiaoensis Lin & Li, 2014, S. bifurcata Lin & Li, 2010, S. halongense Lehtinen, 1981, S. lenachanae Lin & Li, 2017, S. singulare Shear, 1978, S. takensis Yan & Lin, sp. n., and S. wulongensis Lin & Li, 2014 .

Distribution. China (Chongqing, Guizhou, and Guangxi), Vietnam, Thailand, and Singapore (Fig. 10).