Leucophenga albiterga sp. nov.

(Figs 3 B, 7G, 7H, 11B, 15A, 15B, 28)

Diagnosis. Mesonotum and scutellum nearly yellowish, slightly pale (Fig. 7 G); abdominal 2nd to 4th tergites mostly white medially (Fig. 11 B); epandrium glabrous, lacking pubescence and setae (Fig. 28 A); cercus lacking pubescence (Fig. 28 A).

Description. Ocellar triangle brown, with 2 setae above ocellar setae. Frons yellow. Pedicel yellow; first flagellomere yellowish. Clypeus brownish. Palpus brownish yellow. Mesonotum yellowish and slightly pale (Fig. 7 G). Postpronotal lobe pale (Fig. 7 H). Acrostichal setulae in 9–11 irregular rows (Fig. 7 G). Pleura mostly yellowish, dark brown posteriorly (Fig. 7 H). Wing (Fig. 3 B): Costal vein between R2+3 and R4+5 distally with 6 peglike spinules on ventral surface. Abdominal 5th and 6th tergites brown, with yellow patches (Fig. 11 B). Male terminalia: Paramere with 8 sensilla dorsally, lacking pubescence (Fig. 28 C). Aedeagus thick, slightly dorsad expanded submedially, with pubescence distally (Fig. 28 D).

Measurements. BL = 2.90 mm in holotype, THL = 1.27 mm, WL = 2.67 mm, WW = 1.20 mm, arb = 6/3, avd = 0.76, adf = 1.21, flw = 1.86, FW/HW = 0.43, ch/o = 0.06, prorb = 0.76, rcorb = 0.65, vb = 0.43, dcl = 0.60, presctl = 0.53, sctl = damaged, sterno = 0.75, orbito = 1.60, dcp = 0.33, sctlp = 1.10, C = 1.39, 4c = 1.60, 4v = 2.00, 5x = 1.11, ac = 4.67, M = 0.57, C3F = 0.73.

Type specimens. Holotype ♂ (SCAU, No. 123136), CHINA: Weixi, Yunnan, 1900m, 29.vii.2004, ex tree trunk, HW Chen.

Distribution. China (Yunnan).

Etymology. A combination of the Latin words “ albus ” (= white) + “ tergum ” (= tergite), referring to the abdominal second to fifth tergites mostly white.