Diestrammena (Gymnaeta) tianmushanensis ( Liu & Zhang, 2001 )

Jiao, Zhongjiu, Niu, Changying, Liu, Xianwei, Lei, Chaoliang & Bi, Wenxuan, 2008, Descriptions of Chinese species of the subgenus Diestrammena (Gymnaeta) Adelung (Orthoptera: Rhaphidophoridae), Zootaxa 1917, pp. 55-60 : 57-58

Diestrammena (Gymnaeta) tianmushanensis ( Liu & Zhang, 2001)

(figs. 4–6)

Tachycines (Gymnaeta) tianmushanensis Liu & Zhang, 2001 . In Wu & Pan, 2001. Insects of Tianmushan National nature Reserve, p. 98–99.

Original description of the female ( Liu & Zhang, 2001). Additional description of male as follows: Diagnosis. Male. Head with fastigium of vertex divided into two conical tubercles. Legs long and slender; Fore femur about 1.8 times as long as the pronotum, unarmed beneath, the internal genicular lobe with 1 short spine and external lobe with 1 long movable spur; fore tibia beneath with 0 internal and 1 external spur, a small median spine between the paired apical spurs. Mid femur unarmed beneath, the internal and external genicular lobe with 1 long movable spur; mid tibia with 1 internal and 1 external spur beneath, a short spine between the paired apical spurs. Hind femur unarmed beneath, hind tibiae above on each side with 74–76 spines, grouped in series, super internal spur of hind tibia shorter than the metatarsus (fig. 4). Male genitalia as fig. 5–6.

Coloration. Body yellowish brown, mottled with darkish blotches.

Measurements (in mm): length of body 15.0, pronotum 5.0, fore femora 9.0, hind femora 17.0.

Specimens examined: 1ɗ, Anhui, (Wenquan Huangshan), 23. X.1985, leg. Liu Xian-Wei.

Discussion. This species is resembles D.(G.) berezowskii Adelung, 1902 . But differs in the number of spines of hind tibiae and upper internal spur distinctly shorter than the metatarsus. The shape of male genitalia and shape of female subgenital plate are distinctive.

Distribution. China (Zhejiang, Anhui).