Leucophenga cultella sp. nov.

(Figs. 2 I, 4G, 4H, 8J, 8K, 17)

Diagnosis. This species is mostly similar to L. acuticauda sp. nov. in having the wing fuscous along R1 and costa (Fig. 2 H, I), the color patterns of abdominal tergites in both male (Fig. 8 H, J) and female (Fig. 8 I, K), and the surstylus acute apically (Figs. 16, 17 A), but can be distinguished from the latter by the hypandrium with 3 sensilla (Fig. 17 B), and the aedeagus slender, acute apically, and slightly knife-shaped in lateral view (Fig. 17 D).

Description. Ocellar triangle dark brown, with ca. 1–2 seta(e) above ocellar setae. Frons yellow to brownish yellow. Pedicel brownish yellow; first flagellomere yellowish. Clypeus brown. Palpus yellow. Mesonotum brownish yellow to brownish, with four brown, longitudinal stripes submedially and laterally in male (Fig. 4 G), brown before scutellum in female. Postpronotal lobe brownish yellow (Fig. 4 H). Acrostichal setulae in ca. 8–10 irregular rows (Fig. 4 G). Scutellum dark brown, brownish yellow at tip (Fig. 4 G). Pleura with a brown, longitudinal stripe above (Fig. 4 H). Katepisternum and meron brownish yellow, slightly brownish above (Fig. 4 H). Wing (Fig. 2 I): Costal vein between R2+3 and R4+5 distally with ca. 5 peg-like spinules on ventral surface. Abdominal tergites mostly dark brown (Figs. 8 J, K), with a pair of yellow patches submedially between 2nd to 3rd tergites. Male terminalia: Epandrium with ca. 3 setae near posterior margin per side (Fig. 17 A). Paramere with ca. 1 sensillum medioventrally and ca. 5 sensilla distally (Fig. 17 C).

Measurements. BL = 2.80 mm in holotype (range in 4♂ and 5♀ paratypes: 2.30–2.53 mm in ♂, 2.27–2.67 mm in ♀), THL = 1.20 mm (1.07–1.13 mm in ♂, 0.93–1.23 mm in ♀), WL = 2.30 mm (1.97–2.13 mm in ♂, 1.93–2.60 mm in ♀), WW = 1.00 mm (0.90–1.07 mm in ♂, 0.87–1.13 mm in ♀), arb = 7/4 (6–7/3–4), avd = 0.92 (0.83–0.92), adf = 2.00 (1.67–2.00), flw = 2.00 (1.57–2.00), FW/HW = 0.40 (0.35–0.45), ch/o = 0.04 (0.03–0.06), prorb = 0.84 (0.63–0.80), rcorb = 0.79 (0.70–0.80), vb = 0.42 (0.33–0.50), dcl = 0.50 (0.38–0.57), presctl = 0.54 (0.41–0.61), sctl = 1.13 (1.23–1.38), sterno = 0.83 (0.62–0.80), orbito = 2.20 (2.00–2.75), dcp = 0.28 (0.25–0.32), sctlp = 1.08 (0.92–1.10), C = 2.35 (2.11–2.63), 4c = 1.12 (1.06–1.41), 4v = 2.09 (1.93–2.46), 5x = 2.36 (1.69–2.30), ac = 3.08 (2.92–3.17), M = 0.79 (0.69–0.84), C3F = 0.84 (0.76–0.85).

Type specimens. Holotype ♂ (SCAU, No. 128888), CHINA: Tianmushan, Linan, Zhejiang, 30°20'N, 119°25'E, 800m, 2.vii.2013, ex tussock, K Liu . Paratypes: CHINA: 3♂, 1♀ (SCAU, Nos 128889–92), Mangshan, Yizhang, Hunan, 1200m, 3.x.2004, ex tussocks, HL Cao ; 3♀ (SCAU, Nos 128893–95), Wulu, Hairui, Taitung, Taiwan, 23°10'N, 121°2'E, 740m, 28.x.2012, ex tussocks, HW Chen ; 2♂ (SCAU, Nos 128896, 97), Maolan, Libo, Guizhou, 26°39'N, 107°51'E, 930m, 20.ix.2015, ex tussocks, J Huang ; 1♂, 2♀ (SCAU, Nos 128900–02), Yixiang, Puer, Yunnan, 1400m, 12.xii.2012, ex tussocks, HW Chen ; 1♀ (SCAU, Nos 128898), Hesong, Menghai, Yunnan, 1750m, 2.iv.2011, ex tussock, SJ Yan ; 1♀ (SCAU, No. 128903), Tongmai, Bomi, Xizang, 30°06'N, 95°05'E, 2000m, 12.x.2010, ex tussock, L Wu.

Distribution. China (Zhejiang, Hunan, Taiwan, Guizhou, Yunnan, Xizang).

Etymology. From the Latin word “ cultellus ” (= knife), referring to the aedeagus slightly knife-shaped in lateral view.