Diestrammena (Gymnaeta) brevicauda ( Karny, 1933 )

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 : 56-57

Diestrammena (Gymnaeta) brevicauda ( Karny, 1933)

( Figs. 1–3 ) new status

Tachycines (Gymnaeta) brevicauda Karny, 1933 . Ark. Zool., 26A(2): 6; Karny, 1937. Genera Insectorum, 206: 248.

The original description of the female ( Karny, 1933). 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 1.4–1.5 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 1 internal and 2 external spurs, 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 beneath with 1 internal and 1 external spur, a short spine between the paired apical spurs. Hind femur unarmed beneath; hind tibia above on each side with 59–69 spines, grouped in series, super internal spur of hind tibia equal to the metatarsus (fig. 1). Male genitalia as figs. 2–3.

Coloration. Body blackish brown, mottled with pale blotches.

Measurements (in mm): length of body 11.5, pronotum 5.5, fore femora 8.0, hind femora 16.0.

Specimens examined: 1ɗ, Shannxi, (Qingling Tiantaishan), 2–3. IX.1999, leg. Liu Xian-Wei & Yin, Hai- Sheng.

Discussion. This species was synonymized by Storozhenko (1990) with D.(G.) coomani Chopard , but we consider that is a distinct species. Differs in that the fore femora are shorter, about 1.4–1.5 times as long as pronotum, and the structure of male genitalia.

Distribution. China (Gansu, Shannxi).

Figures

FIGURES 1 – 3. Diestrammena (Gymnaeta) brevicauda (Karny, 1933). 1. Tarsus of hind leg, lateral view; 2. Male genitalia, dorsal view; 3. Male genitalia, ventral view.