Leucophenga rhombura Huang, Su & Chen, 2017, sp. nov.

Leucophenga rhombura sp. nov.

(Figs. 2 P, 6A, 6B, 9I, 9J, 24)

Diagnosis. This species is mostly similar to L. rugatifolia sp. nov. in having the thorax mostly dark colored (Fig. 6 A–D), the wing fuscous along R1 only (Fig. 2 P, Q), and the shape of paramere (Figs. 24, 25 C), but can be distinguished from the latter by the hypandrium lacking any sensillum (Fig. 24 B), and the aedeagus slender, narrow on posteroventral 1/3 and apically, slightly rhombic distally in lateral view, with 1 sensillum distally (Fig. 24 D); see below that species.

Description. Ocellar triangle dark brown, with ca. 2–3 setae above ocellar setae. Frons brownish yellow, brown laterally. Pedicel and first flagellomere brownish yellow. Clypeus brown. Palpus yellow. Mesonotum entirely dark brown to black in male (Fig. 6 A), brownish yellow, with three brown, longitudinal stripes medially and laterally in female. Postpronotal lobe brown in male (Fig. 6 B), brownish yellow in female. Acrostichal setulae in ca. 10–12 irregular rows (Fig. 6 A). Scutellum entirely dark brown to black (Fig. 6 A). Pleura, katepisternum and meron mostly dark brown in male (Fig. 6 B), mostly brown in female. Wing (Fig. 2 P): Costal vein between R2+3 and R4+5 distally with ca. 5–6 peg-like spinules on ventral surface. Abdominal tergites dark brown, 2nd tergite with two pairs of yellow patches submedially and laterally, 3rd tergite with a pair of yellow patches submedially, 4th tergite with a pair of yellow patches subanteromedially in male (Fig. 9 I), 3rd tergite with a pair of yellow patches subanteromedially in female (Fig. 9 J). Male terminalia: Epandrium with ca. 4 setae near posterior margin per side (Fig. 24 A). Surstylus rounded apically (Fig. 24 A). Paramere with a wrinkle remarkable subdorsally and ca. 9 sensilla aligned above (Fig. 24 C).

Measurements. BL = 3.00 mm in holotype (range in 4♂ and 5♀ paratypes: 2.73–2.93 mm in ♂, 2.47–2.90 mm in ♀), THL = 1.47 mm (1.37–1.43 mm in ♂, 1.20–1.33 mm in ♀), WL = 2.60 mm (2.20–2.47 mm in ♂, 2.13–2.27 mm in ♀), WW = 1.23 mm (1.13–1.23 mm in ♂, 1.03–1.13 mm in ♀), arb = 6/3 (5–9/3), avd = 1.08 (0.83–1.00), adf = 1.50 (1.63–2.14), flw = 1.63 (1.43–1.86), FW/HW = 0.35 (0.33–0.42), ch/o = 0.05 (0.04–0.06), prorb = 0.64 (0.58–0.68), rcorb = 0.64 (0.53–0.73), vb = 0.38 (0.33–0.43), dcl = damaged (0.28–0.57), presctl = 0.51 (0.40–0.50), sctl = 1.22 (1.25–1.43), sterno = 0.85 (0.76–0.86), orbito = 2.50 (2.00–2.75), dcp = 0.26 (0.27–0.33), sctlp = 1.23 (1.07–1.25), C = 2.54 (2.21–2.47), 4c = 1.09 (1.13–1.41), 4v = 2.15 (2.18–2.44), 5x = 1.38 (1.44–1.86), ac = 2.06 (1.67–2.18), M = 0.65 (0.71–0.93), C3F = 0.81 (0.76–0.85).

Type specimens. Holotype ♂ (SCAU, No. 129048), CHINA: Yulong, Lijiang, Yunnan, 27°06'N, 100°10'E, 3000m, 5.ix.2012, ex tussock, Q Zhang. Paratypes: CHINA: 3♂, 3♀ (SCAU, Nos 129029–34), Jiulongshan, Lishui, Zhejiang, 28°22'N, 118°53'E, 1610m, 6.vii.2013, ex tussocks, K Liu; 1♂ (SCAU, No. 129035), Wuyishan, on the boundary between Jiangxi and Fujian, 27˚43'N, 117˚57'E, 1900m, 14.vi.2004, ex tree trunk, HW Chen; 2♂, 2♀ (SCAU, Nos 129036–39), Nanling, Shaoguan, Guangdong, 780m, 6.x.2004, ex tussocks, HW Chen; 1♂, 1♀ (SCAU, Nos 129040, 41), Simianshan, Jiangjin, Chongqing, 1130m, 10.vii.2014, ex tussocks, L Zhou; 1♂, 1♀ (SCAU, Nos 129042, 43), Xianheping, Xinglong, Guizhou, 1630m, 11.vii.2014, ex tree trunk, QS Gao; 1♂ (SCAU, No. 129047), Jizushan, Dali, Yunnan, 26°01'N, 100°21'E, 1900m, 23.vii.2006, ex tree trunk, T Li; 4♀ (SCAU, Nos 129049–52), Yixiang, Puer, Yunnan, 1400m, 2.x.2011, ex tussocks, JJ Gao; 2♂ (SCAU, Nos 129045, 46), Muyiji Park, Ximeng, Yunnan, 1100m, 4.iv.2011, ex tussocks, YR Su; 1♂ (SCAU, No. 129044), Hesong, Menghai, Yunnan, 1750m, 2.iv.2011, ex tussock, YR Su; 2♀ (SCAU, Nos 129053, 54), Tongmai, Bomi, Xizang, 2000m, 11.x.2010, ex tussocks, L Wang.

Distribution. China (Zhejiang, Jiangxi, Fujian, Guangdong, Chongqing, Guizhou, Yunnan, Xizang). Etymology. From the Greek word “ rhombos ” (= rhombic), referring to the aedeagus distally rhombic in lateral view.