Contribution to the cockroach genus Ctenoneura Hanitsch, 1925 (Blattodea: Corydioidea: Corydiidae) with descriptions of seven new species from China Author Qiu, Lu Author Che, Yan-Li Author Wang, Zong-Qing text Zootaxa 2017 4237 2 265 299 journal article 36430 10.11646/zootaxa.4237.2.3 a73e9c4d-18c2-4ad2-a564-807215490b40 1175-5326 343796 30330D9E-BC76-449B-9C99-2B5EEDA0F8F5 Ctenoneura helicata sp. nov. ( Figs. 11 , 13 A, 16 H, 23) Type material. Holotype : CHINA : Yunnan : male ( BJFU ), Menglong Town , Jinghong City , 14.V.1978 , no collector recorded . Paratype : CHINA : Yunnan : 1 male ( BJFU ), same data as holotype . Diagnosis. This species can be distinguished from other Chinese simulans -group species by the peculiar deep and narrow emargination on the left side of the subgenital plate ( Fig. 16 H). Description. Body length 6.5–7.0 mm; overall length including tegmen 11.0– 11.5 mm ; pronotum length × width 1.9–2.3 × 2.6–3.0 mm, holotype is distinctly bigger than the paratype . Coloration. Body brownish yellow. Head dark brown, antennae yellowish brown. Pronotal disk dark brown, lateral areas yellow, subtransparent. Tegmina brownish yellow, wings transparent, with RP brownish yellow; venations of both tegmina and wings dark brown. Legs, abdomen, cerci light brown ( Figs. 11 A–B ). Head: slightly exposed ( Fig. 23 A), vertex round, eyes wide apart, interocular space greater than the distance between antennal sockets, ocelli small, face with a Y-shaped convex, antennae with much small yellow pubescence. Pronotum: subcircular ( Fig. 23 A). Tegmina and wings: fully developed extending well beyond end of the abdomen; tegmen with branches of R oblique, Sc slightly thickened, M with 5–6 branches, between R and M presents an intercalary vein, CuA minute, short, not bifurcate ( Fig. 23 B); wing with intercalary vein present, interrupted, M bifurcate, one branch rebifurcate, CuA with 5–6 branches, CuP long and thin ( Fig. 23 C). Legs: front femur type C1, with many spinules on the surface, one process appearing on the base of the hind margin ( Fig. 23 D). Pulvilli absent, arolia small, tarsal claws symmetrical, simple. Abdomen: supra-anal plate in dorsal view transverse, simple, median with a transparent area; cerci long, pubescent, three segments of the base rounded ( Fig. 11 C–D , 23 E). Subgenital plate asymmetrical, when observing it in the specimen, left with an deep emargination, with one small stylus on the left side ( Fig. 16 H); when observing it separately, right with an small eds ( Fig. 11 F , 23 F–G) and the stylus is clearly observed situate on a process ( Figs. 11 E–F , 23 F–G); in dorsal view, the eds forming a groove towards right ( Fig. 23 G); sgs present, slender and curved, basal portion expanded, flat and round, near the basal portion bent acutely, the rest slender, heliciform and the apex portion nested in the eds ( Fig. 13 A, 23 H). Genitalia: left phallomere: right margin straight, with a small process, rectangular with the right margin; lvp with irregular extending process towards left, ldp with narrow but well-sclerotized cvp. Right phallomere: R1M with one elongated process near the apex and one small bent process near the base; R2 with rop very inflated and stout, slp quite strong and short, elp short, with membrane, apex round; R3 large, anterior apex round. Transverse sclerite (tvs): right apex sharpened, near the right bent obtusely, the bent point with one blunt process; left portion with two neighboring processes, one bigger than the other ( Fig. 23 I). Female. Unknown. Distribution. China : South Yunnan ( Fig. 3 ). Etymology. The specific epithet “ helicata ” expresses the character that the distal portion of the sgs is quite spiral.