Pycnoscelus indicus

Pycnoscelus indicus (Fabricius, 1775) Fig. 2 Blatta indica Fabricius, 1775: 272. Pycnoscelus indicus: Roth 1967: 774; Roth 1998: 99. Material examined. China • 5 males & 3 females; Fujian Prov., Putian City, Meizhou Island; 22–23 July 2013; Shun-Hua Gui & Yan Shi leg. • 2 males; Guangdong Prov., Zhongshan City, Zimaling Park, 11 Oct. 2018; Ke-Liang Wu leg. • 1 female; Guangxi Prov., Baise City, Renzhuang Township, Tengmao Village, Nongli tun; 9–13 July 2015; Jian-Yue Qiu leg. • 1 male; Guangxi Prov., Longzhou County; Nonggang Nature Reserve; 29–30 June 2015; Lu Qiu & Qi-Kun Bai leg. • 11 males & 2 females; Yunnan Prov., Yuxi City, Yuanjiang County; 533 m; 22 May 2018; Lu Qiu, Wen-Bo Deng & Zhi-Wei Dong leg. Japan • 2 males & 5 females; Okinawa, Mt. Yonahadake; 222 m; 10 Aug. 2016; Jian-Yue Qiu & Hao Xu leg. Diagnosis. This species is characterized by its pronotum with a broad anterior and narrow anterolateral yellowish band (Fig. 2 E), a feature also presents in P. surinamensis. The two species are difficult to distinguish in appearance. The key distinction between P. indicus and P. surinamensis lies in their reproductive modes: P. indicus reproduces bisexually, while P. surinamensis reproduces parthenogenetically (Roth 1967). Supplementary description of male. Hind margin of supra-anal plate variable, weakly incised medially, or entire and convexly rounded (Fig. 2 G). Sclerotized level and shape of subgenital plate variable: the inner plate nearly symmetrical or strongly asymmetrical, lateral projection on left posterolateral angle distinct or not (Fig. 2 H – J). Male genitalia: Right phallomere with caudal part of sclerite R 1 T widened; R 2 slightly curved; the projection arising from the junction of R 1 T and R 2 elongate; R 3 forked caudally; R 4 plate-like, close to the caudal part of R 1; R 5 absent (Fig. 2 K, L). Sclerite L 2 D divided into basal and apical parts: the basal part straight; the apical part croissant-shaped with outer margin toothed; apical membrane covered with heavy chaetae (Fig. 2 M). Sclerite L 3 with hook short and robust, sclerite L 4 U divided into two parts (Fig. 2 N). Measurements (mm). Body length including tegmen: male 15.8–17.2, female 16.4–18.6; pronotum length × width: male 4.0–4.4 × 5.4–5.9, female 4.3–5.1 × 6.0–6.7; tegmen length: male 13.8–15.3, female 12.7–15.0.