Cothornobata vietnamensis group

Including: C. bubengensis sp. nov., C. vietnamensis sp. nov.

Diagnosis. Two strong fronto-orbital setae. Apex of genital fork with dense, long setulae; arm of genital fork slender, width as wide as 1/5 base of genital fork, and incurved apically; genital fork with basal tubercles widely separated, medial tubercle indistinctly convex or absent. Distiphallus shorter than phallapodeme. Pregonite lobed apically. Postgonite with 1 apical seta.

Discussion. This species group is only found in southwestern China and northern Vietnam.