9. Kapsa (Rigida) serrata Cao & Zhang sp. nov.

(Figs 2 m–p, 13)

Description. Body (Fig. 2 m, n) yellow-whitish. Coronal suture (Fig. 2 o) obvious, exceeding midlength of vertex. Face (Fig. 2 p) short.

Abdominal apodemes (Fig. 13 a) short, extend to the 4th sternite. Anal tube appendage (Fig. 13 b, c) with apical half slim.

Pygofer dorsal appendage (Fig. 13 b, c) straight, knife-shaped. Subgenital plate (Fig. 13 b, d) with 4 macrosetae, with numerous stout microsetae subbasally. Paramere (Fig. 13 e) bifurcated apically, ventral branch shorter than dorsal branch. Connective (Fig. 13 f) with lateral arms long, manubrium short. Aedeagal shaft (Fig. 13 g, h) relatively broad, denticulate dorsoapically, with serrated, compressed protrusion ventrally; dorsal apodeme well developed, preatrium short; gonopore apical, ventral.

Measurement. Body length: male 3.2mm.

Material examined. Holotype: 3, China: Tibet, Yigong, 2300m, 16 vi 1978, coll. Li Fasheng.

Remarks. This species resembles K. maculata Sohi & Mann, but the pygofer dorsal appendage is broad and straight, the anal tube appendage is curved caudad, the apex of the paramere is bifurcated, the aedeagal shaft is more slender with a serrated, compressed ventral protrusion, and lacks a ventral process.

Etymology. The specific name is derived from the Latin word “serratus”, referring to serrated edge of aedeagal ventral protrusion.