Pycnoscelus nigra

Pycnoscelus nigra (Brunner von Wattenwyl, 1865) Fig. 3 Panchlora nigra Brunner von Wattenwyl, 1865: 280. Pycnoscelis [sic] nigra: Princis 1964: 274. Pycnoscelus nigra: Princis 1967: 709; Roth, 1998: 103. Material examined. China • 1 female; Guangdong Prov., Zhongshan City, Mt. Wuguishan; 5 May 2018; Ke-Liang Wu leg. • 5 males; Yunnan Prov., Xishuangbanna, Mengla County, Menglun Town; 25 May 2016; Lu Qiu & Zhi-Wei Qiu leg. • 1 female; Hainan Prov., Mt. Diaoluo shan; 275 m; 24–25 May 2014; Shun-Hua Gui & Xin-Ran Li leg. • 1 male; Chongqing City, Hechuan District, Dashi Town; 18 July 2013; Zong-Qing Wang leg. • 2 males & 4 females; Sichuan Prov., Panzhihua City, Xinzhuang Village; 1306 m; 15 Oct. 2014; Li He leg. • 6 males; Yunnan Prov., Menglun Town, Xishuangbanna Tropical Botanical Garden, Lvshilin (Green stone forest); 25 May 2016; Lu Qiu & Zhi-Wei Qiu leg. • 1 male; Yunnan Prov., Baoshan City, Mt. Gaoligongshan, Baihualing, Hanlong Zhai; 1400–1900 m; 20–23 June 2020; Lu Qiu & Jin-Lin Liu leg. Diagnosis. This species is characterized by the generally dark coloration (Fig. 3 A – D) and pronotum with narrow yellow area anterolaterally (Fig. 3 E). Supplementary description of male. Male genitalia: Right phallomere with caudal part of sclerite R 1 T widened distinctly; R 2 nearly straight; the outgrowth arising from the junction of R 1 T and R 2 broad, plate-like; R 3 forked caudally; R 4 plate-like; R 5 absent (Fig. 3 I, J). Sclerite L 2 D with the apical part bifurcated basally; apical membrane covered with heavy chaetae (Fig. 3 K). Sclerite L 3 with hook comparatively slender, sclerite L 4 U divided into two parts (Fig. 3 L). Measurements (mm). Body length including tegmen: male 19.5–23.8, female 20.3–24.1; pronotum length × width: male 4.5–4.9 × 5.4–6.9, female 5.0–6.0 × 7.5–8.1; tegmen length: male 15.9–19.6, female 16.5–20.8. Remarks. Roth (1998) recorded a male of P. nigra from Jingdong (= Kintung), Yunnan, and found its left style present. However, the left style is absent in all our new material from Yunnan (Fig. 3 H).