Cordax unidentatus ( Borelli, 1915 ) Borelli, 1915

Sun, Meiling, Li, Kai & Liu, Xianwei, 2016, Three new species of the subfamily Opisthocosmiinae from China (Dermaptera, Forficulidae), with new synonymies and combinations, Zootaxa 4109 (3), pp. 359-371 : 367

Cordax unidentatus ( Borelli, 1915) comb. nov.

( Figs. 20‒23 )

Timomenus unidentatus Borelli, 1915: 4 .

Timomenus inermis Borelli, 1915: 5 . (Syn. nov.).

Timomenus simplicis Shiraki, 1928: 23 . (synonymized by Brindle, 1969: 248). Timomenus cuneatus Zhang, 1991: 291 . (Syn. nov.).

Timomenus paradoxa Chen & Ma, 2004: 236 . (nec Bey-Bienko, 1970: 289).

Measurements. Total body: ♂ 20.0, ♀ 15.0; forceps: ♂ 6.5‒8.5, ♀ 5.0.

Material. 1♀, Jinrao Mountain, Fujian, 1959. VI.12, collected by Jin Gen-Tao & Lin Yang-Ming; 1♂, Da’an, Fujian, 1959. XI.26, collected by Jin Gen-Tao & Lin Yang-Ming; 1♀, Guadun, Chong’an, Fujian, China, elev. 790‒1155m, 1960. IV.5, collected by Jin Gen-Tao & Lin Yang-Ming; 6♀♀, 3♂♂, Tongmu, Chong’an, Fujian, China, elev. 790‒1155m, 1960. VI.17‒28, collected by Jin Gen-Tao & Lin Yang-Ming; 3♀♀, Aotou, Jianyang, Fujian, elev. 970m, 1960. VI.20‒27, collected by Jin Gen-Tao & Lin Yang-Ming; 1♂, Huangkeng, Jianyang, Fujian, China, 1960. VII.7, collected by Jin Gen-Tao & Lin Yang-Ming; 1♀, Xiyang, Yong’an, Fujian, 1962. IV.23, collected by Jin Gen-Tao & Lin Yang-Ming; 1♂, Dazhulan, Wuyi Mountain, Fujian, China, 1994. VIII.27‒IX.3, collected by Jin Xing-Bao & Yin Hai-Sheng; 1♂, Fengyang Mountain, Longquan, Zhejiang, China, elev. 1100‒1500m, 2008. VII.30‒VIII.4, collected by Liu Xian-Wei et al.; 1♂, Shunxiwu, Qingliangfeng, Lin’an, Zhejiang, China, elev. 400m, 2008. VIII.9–10, collected by Liu Xian-Wei et al.; 4♀♀, Gutian Mountain, Kaihua, Zhejiang, China, elev. 330‒800m, 2012. IX.18‒X.16, collected by Liu Xian-Wei et al.; 2♂♂, Mao’er Mountain, Guangxi, China, elev. 500‒1100m, 2013. VII.30‒VIII.6, collected by Zhang Hai-Guang et al.; 1♂, 1♀, Daming Mountain, Guangxi, China, elev. 1250m, 2013. VII.19‒25, collected by Liu Xian-Wei et al ..

Distribution. China (Zhejiang, Fujian, Jiangxi, Taiwan, Guizhou, Guangxi).

Discussion. This species is very similar to C. armatus . The first antennal joint is flat above with sides forming a kind of ridge, and therefore it belongs to Cordax . Cordax unidentatus appears to be widely distributed in China. It shows great variation in the shape of male forceps. The descriptions of T. inermis from Guizhou and T. cuneatus from Guizhou only differ from C. unidentatus in minute differences that fall well within the variational limits of the latter; therefore, both are considered synonyms of C. unidentatus .

Figures

FIGURES 13 ‒ 29. Cordax Burr, 1910. 13 ‒ 16: C. armatus De Haan, 1842. 17 ‒ 19: C. claviger (Burr, 1917). 20 ‒ 23: C. unidentatus (Borelli, 1915). 24 ‒ 29: Cordax serratus sp. nov. 13, 24) Body of male, dorsal view. 25) Subgenital plate of male, ventral view. 17, 20, 21, 26) Forceps of male, dorsal view. 16, 19, 23, 27) Genitalia of male, dorsal view. 15) First antennal joint of female, dosal view. 28) Subgenital plate of female, ventral view. 14, 29) Body of female, dorsal view. 18, 22) Forceps of female, dorsal view. Scale bars = 2 mm.