2. Gelastyrella hainanensis Ran et Liang, sp. nov.

(Figures 1– 8)

Length: male 6.3 mm, female 7.5 mm.

Male: General color dull brown. Vertex (Fig. 1) yellow brown, median carina feeble; anterior margin slightly acutely roundly produced, posterior margin anteriorly angularly produced, lateral margins almost parallel. Frons (Fig. 2) dark brown, median carina present; the area between submedian carinae and anterior margin of vertex black brown. Clypeus dark brown, paler in middle, laterally transversely obliquely striate. Antennae dark brown. Pronotum dull green brown; anterior margin slightly acutely produced between eyes; median carina obscure; with a fuscous pit beyond median carina, and with dark spots on disc. Mesonotum triangular, dark brown, with green shining; with median carina and lateral carinae. Tegmina (Fig. 3) with transverse veinlets among longitudinal veins, veins slightly green. Legs yellow brown, with dark brown stripes. Spinal formula of hind legs: 8­49­2.

Male genitalia: Anal segment (Fig. 5) in dorsal view almost rounded in apical 1/3, long striped in basal 2/3, anal foramen lies in apical 1/3. Genital styles (Fig. 6) almost triangular, base convex like a hook. Aedeagus (Fig. 7­8) ventrally convex triangularly, near apex with two anteroventally directed processes, apex also with two processes dorsally.

Female: General color is darker than that of male. Spinal formula of hind legs: 8­(40­ 42)­2.

Materials examined

Holotype. Male, China: Hainan, Qiongzhong, 20. iv. 1984 (S. L. Liu) (TMNH). Paratype. 1 female, China: Hainan, 14. v. 1934 (C. He) (IZCAS).

Distribution

China: Hainan.

Remarks

This species is similar to G. litaoensis Yang, but can be separated from the latter by vertex yellow brown (vertex grayish with basal portion somewhat green in G. litaoensis Yang); spinal formula of hind legs: male 8­49­2; female 8­(40­42)­2 (spinal formula of hind legs: 7­35­ 2 in G. litaoensis Yang).

Etymology

This species is named for where it was collected.