Leucophenga angusta Okada

(Figs 2A, 2B, 2 E, 2F, 4A–C, 5)

Leucophenga (Leucophenga) angusta Okada, 1956: 28; Gupta & Panigrahy, 1987: 62; Okada, 1989: 807; Fartyal et al., 2005: 411.

Diagnosis. This species is mostly similar to L. striatipennis in the abdominal tergites dark brown to black (Fig. 4 A, 4M), but can be distinguished from the latter by wing hyaline, and aedeagus slender and pubescent apically (Fig. 5 B), see under that species.

Description. Male and female: Frons yellow. Pedicel mostly yellowish brown; first flagellomere yellow. Palpus brown in male and female. Mesonotum brownish yellow, brown before scutellum (Fig. 2 E). Acrostichal setulae in ca. 14–16 irregular rows (Fig. 2 E). Scutellum brownish yellow medially, brown along margin (Fig. 2 E). Pleura brownish above, yellow below (Fig. 2 F). Halter brown, with yellowish patch apically (Fig. 2 F). Abdominal tergites usually black, laterally with yellow parches on 2nd (Fig. 4 A), sometimes yellow, with dark brown patches (Fig. 4 B, 4C). Male terminalia: Epandrium with 3 setae near posterior margin and 4 setae on ventral corner per side (Fig. 5 B). Paramere with 5 sensilla distally (Fig. 5 C).

Measurements. BL = 2.47–2.80 mm in 5♂, 2.47–2.87 mm in 3♀, ThL = 1.20–1.33 mm in ♂, 1.20–1.27 mm in ♀, WL = 2.33–2.67 mm in ♂, 2.27–2.60 mm in ♀, WW = 0.87–1.00 mm in ♂, 0.87–1.00 mm in ♀, arb = 5–7/3– 4, avd = 0.67–1.00, adf = 1.67–2.00, flw = 1.67–2.00, FW/HW = 0.31–0.44, ch/o = 0.05–0.06, prorb = 0.75–0.88, rcorb = 0.67–0.88, vb = 0.25–0.50, dcl = 0.43–0.67, presctl = 0.40–0.61, sctl = 1.29–1.42, sterno = 0.60–0.78, orbito = 1.33–2.00, dcp = 0.14–0.21, sctlp = 0.86–1.12, C = 2.00–2.60, 4c = 1.21–1.59, 4v =1.92–2.55, 5x = 1.00– 1.50, ac = 2.11–2.71, M = 0.50–0.75, C3F = 0.67–0.81.

Specimens examined. CHINA: 1♂, 1♀ (SCAU, Nos 127275, 76), Dajing, Kaixian, Chongqing, 31˚30'N, 108˚27'E, 329m, 3.viii.2013, XY Hu; 3♂, 4♀ (SCAU, Nos 127277–83), Tianmushan, Linan, Zhejiang, 30˚20′N, 119˚25′E, 1100m, 30.vii.–2.viii.2011, 6.vii.2013, ex tussock, ZF Shao, SJ Yan, K Liu; 1♂ (SCAU, No. 127284), Jiulongshan, Suicang, Zhejiang, 28˚21′N, 118˚52′E, 1614m, 4.vii.2013, ex tussock, K Liu; 1♂, 1♀ (SCAU, Nos 127285, 86), Mangshan, Yizhang, Hunan, 24˚55′N, 112˚45′E, 1200m, 3.x.2004, ex tussocks, HL Cao, MF Xu; 1♀ (SCAU, No. 127287), Gaoxiong, Taiwan, 22˚35'N, 120˚20'E, 640m, 8.vi.2011, XY Liu; 1♂ (SCAU, No. 127288), Lugu, Nantou, Taiwan, 27˚44′N, 120˚47′E, 350m, 18.x.2012, ex tussock, HW Chen; 2♂ (SCAU, Nos 127289, 90), Huolushan, Guangzhou, Guangdong, 23˚11′N, 113˚23′E, 60m, 5.iv.2005, MF Xu; 6♂, 2♀ (SCAU, Nos 127291– 98), Dinghushan, Zhaoqing, Guangdong, 25˚00′N, 112˚34′E, 560m, 23.xi.2004, MF Xu; 1♂ (SCAU, No. 127299), Jianfengling, Ledong, Hainan, 18˚41′N, 108˚52′E, 220m, 20.iv.2004, HW Chen; 14♂, 6♀ (SCAU, Nos 127300– 19), Bapen, Fusui, Pingxiang, Congzuo, Guangxi, 22˚05′N, 107˚32′E, 220m, 18–23.viii.2004, HW Chen; 2♂, 1♀ (SCAU, Nos 127320–22), Maoershan, Guilin, Guangxi, 25˚51′N, 110˚27′E, 700m, 18–19.x.2004, ex tree trunks, XL Zhang; 17♂, 3♀ (SCAU, Nos 127323–42), Xianheping, Xingyi, Guizhou, 24˚58′N, 105˚56′E, 700m, 14,15. vii.2014, ex tree trunks, QS Gao, YL Wang, Y Zhang; 1♂ (SCAU, No. 127343), Hutiaoxia, Diqing, Yunnan, 27˚12'N, 100˚03'E, 2000m, 23.viii.2011, ex tussocks, HW Chen; 4♂ (SCAU, Nos 127344–47), Zhengxing, Jinggu, Yunnan, 22˚49′N, 100˚03′E, 1100m, 24.vii.2009, ex tussock, L Wu; 20♂, 20♀ (SCAU, Nos 127348–67, 127373– 92), Menglun, Mengla, Yunnan, 20˚41′N, 101˚25′E, 680–980m, 17.iv.2004, 11–12.iv.2007, 27–28.ix.2011, ex tussock, HW Chen, JJ Gao; 3♂, 1♀ (SCAU, Nos 127369–72), Wangtianshu, Mengla, Yunnan, 21˚28'N, 101˚38'E, 570m, 22–24.iv.2007, 13.x.2010, ex tree trunk, HW Chen, JJ Gao; 1♀ (SCAU, No. 127368), Hesong, Menghai, Yunnan, 21˚50′N, 100˚05′E, 1900m, 11.iv.2011, ex tussock, JJ Lu; 2♂, 1♀ (SCAU, Nos 127393–95), Yixiang, Puer, Yunnan, 22˚47′N, 101˚03′E, 1100m, 18,19. ix.2007, JJ Gao; 1♂ (SCAU, No. 127396), Tongmai, Bomi, Xizang, 30˚06'N, 95˚05'E, 2000m, 11,12. x.2010, ex tussock, L Wang; 3♂, 2♀ (SCAU, Nos 127397–401), Beibeng, Motuo, Xizang, 18˚10'N, 108˚52'E, 1000m, 30.ix.2010, ex tussock, YR Sui. JAPAN: 1♀ (SCAU, No. 127402), Tomochi, Kumamoto, 35˚37'N, 139˚14'E, 570m, 24.x.1997, HW Chen.

Distribution. China (Zhejiang, Taiwan, Hunan, Guangdong, Hainan, Guangxi, Chongqing, Guizhou, Yunnan, Xizang), Japan (Honshu, Kyushu, Okinawa), Korea, Philippines, Vietnam, Malaysia, Singapore, Indonesia (Sumatra, Java), Myanmar, Nepal, India (Orissa, Uttaranchal), Sri Lanka, Micronesia, Fiji, Australia.