Chlamydatus sichuanensis sp. nov.

(Figs. 7–8, 12, 17, 27–30)

Type specimens: Holotype: male, CHINA: Xiaojin County (30°59'N, 102°21'E), Sichuan Province, alt. 2350m, 26.viii.1963, Le­yi Zheng leg.. Paratypes: 6 males, 13 females, same data as holotype.

Diagnosis: Recognizable by its small size, total length 2.28–2.68, the ovate to obovate body form, the coloration of the antennal segments varying from yellow to black, the coloration of leg (Fig. 17), and the structure of male genitalia. Similar in size and general appearance to C. pullus, easily distinguished by coloration of the femora. In the new species, the fore and middle femora are yellowish, the hind femora are dark brown on proximal 80% and pale distally. However, in C. pullus the femora are dark, with deep yellow at apex only.

Description: Male (Fig. 7): Macropterous, elongately oval.

Coloration: Body dark; eye brown, but margin yellow; the coloration of antennae varying from completely yellow to almost black; clypeus and buccula dark; labium ranging from brown to black; fore­ and middle femora entirely yellow, with dark spots, hind femora dark brown, pale distally; tibia yellow and tibial spines brown with brown bases; tarsal segment III and claws darkened; abdomen uniformly black.

Structure: Dorsum smooth and weakly shining, covered with recumbent, shining, and simple setae; clypeus not visible from above; frons and vertex broad and flattened in dorsal view; posterior margin of vertex moderately rounded; eyes not conforming to anterior margin of pronotum; antenna inserted below ventral margin of eye; antennal segments III and IV slender than segment II, total length longer than segment II; labium reaching to posterior margin of middle trochanters; hemelytra nearly parallel­sided, corial margin slightly convex; cuneal fracture weakly incised, hemelytra almost not deflexed at fracture; membrane fully developed; metathoracic scent­gland evaporatory area as in Fig. 12; pygophore not very large relative to total size of abdomen.

Male genitalia (Figs. 27–30): Vesica curving, apical spine of vesica short; secondary gonopore large, located near apex of vesica; phallotheca heavily sclerotized; left paramere boat­shaped, typical of Phylini; right paramere decurved apically.

Female (Fig. 8): Similar to male, but smaller and more ovoid than male.

Distribution: China (Sichuan).

Etymology: Named for the area (Sichuan Province of China) where the type material was found.