Sorineuchora bivitta (Bey-Bienko, 1969)

Li, Meng, Che, Yan-Li, Zheng, Yu-Hong & Wang, Zong-Qing, 2017, The cockroach genus Sorineuchora Caudell, 1927 from China (Blattodea, Ectobiidae, Pseudophyllodromiinae), ZooKeys 697, pp. 133-156 : 139-141

Sorineuchora bivitta (Bey-Bienko, 1969) Figs 6, 12 A–B

Chorisoneura bivitta Bey-Bienko, 1969: 838, fig. 17 (♂).

Sorineuchora bivitta : Roth 1998: 20 (♂).

Material examined.

Deposited in IESWU: 1 male, Yunnan, Hekou, Nanxi, Huayudong Forest Park, 20-21 April 2009, Wei-Wei Zhang leg.; 2 males, Guizhou, Maolan, Yongkang, 25-28 May 1998, Qiong-Zhang Song leg.; 1 male, Guizhou, Wangmo, 06 June 1982, Ping-Zhang Feng leg.; 1 male, Fujian, Sanming, Shaxian, 23 May 1977, Qing-Dong Luo leg.; 1 male, Guangxi, Longzhou, 31 May 1997, Mao-Fa Yang leg.; 1 male, Guangxi, Chongzuo, Banli National Nature Reserve, 174m, 31 May 2009, Wei-Wei Zhang leg.; 1 male, Guangxi, Hechi, Mt. Daqingshan, 14 May 1963, Si-Kong Liu leg.; 1 male, Hainan, 25 May 1997, Mao-Fa Yang leg. Deposited in MHBU: 1 male, China, Guangdong, Huizhou, Mt. Nankunshan, 25 July 2010, Hao-Yu Liu leg.

Diagnosis.

Vertex with two black stripes, the regions between them yellow (Figs 6B, 12B); L2vm with inflated apex and the left with filamentous sclerite whose apex inflated (Fig. 6J). Using these traits, S. bivitta can be distinguished from its congeneric species.

Supplement to the description provided in Roth (1998: 20-21).

Measurements

(mm). Body length without cerci: male 6.5-7.9, female 6.5-7.8; overall length including tegmen: male 9.3-10.5, female 9.5-11.0; pronotum length × width: male 1.95 × 3.05, female 1.95 × 2.95; tegmen length: male 7.9-9.0, female 8.2-9.0.

Male. In some individuals, the coloration of the pronotal disk is blackish brown without stripes (Fig. 6D), and in other individuals, the pronotal disk has a circular dark brownish spot and dense markings consisting of black spots and longitudinal and oblique stripes (Fig. 6C). Abdomen dark red-brown. Legs black-brown. Cerci apex yellowish brown. Interocular space as wide as or narrower than the distance between antennal sockets. Fifth segment of maxillary palpus longer than the fourth. Pronotum subelliptical, anterior and posterior margins nearly truncate. Tegmina and wings fully developed extending beyond end of abdomen, the former with oblique CuA. Hind-wing radial field narrow, R with oblique branches of which some apical ones bifurcated, M bent, without branches or with a small branch at the apex, CuA with three complete branches. Front femur Type C2, pulvilli on four proximal tarsomeres, tarsal claws asymmetrical, arolia present. Abdominal terga unspecialized. L1 consisting of several irregular seta-free sclerites (Fig. 6I); L2vm with inflated apex and the left with filamentous sclerite whose apex inflated (Fig. 6J); hooked phallomere (R2) on the right side with a preapical incision.

Distribution.

China (Yunnan, Guizhou, Fujian, Guangxi, Hainan, Guangdong).

Remarks.

The color of S. bivitta resembles that of S. bimaculata sp. n. (Fig. 12 A–D), but the former is easily distinguished from the latter by the markings on the vertex (Figs 6B, 7C) and the shape of styli (Figs 6H, 7H).