Leucophenga angustifoliacea sp. nov.

(Figs 3 C, 7I, 7J, 11C, 15C, 15D, 29)

Diagnosis. Abdominal 3rd to 6th tergites dark brown, with small yellow patches sublaterally (Fig. 11 C); paramere dorsad expanded medially (Fig. 29 C); aedeagus thick on basal 2/3, slender on distal 1/3 (Fig. 29 D).

Description. Ocellar triangle yellowish brown, with 4 setae above ocellar setae. Frons yellowish brown to brown. Pedicel yellowish brown; first flagellomere yellow. Clypeus yellowish brown. Palpus brownish yellow. Mesonotum yellowish brown, slightly brown before scutellum (Fig. 7 I). Postpronotal lobe brownish yellow (Fig. 7 J). Acrostichal setulae in 11–13 irregular rows (Fig. 7 I). Scutellum yellowish brown, black at tip and pale around apical scutellar setae (Fig. 7 I). Pleura slightly brown above (Fig. 7 J). Katepisternum and mesopleuron mostly brownish yellow; mesopleuron with a brownish patch (Fig. 7 J). Wing (Fig. 3 C): Costal vein between R2+3 and R4+5 distally with 6 peg-like spinules on ventral surface. Halter slightly brownish apically (Fig. 7 I). Male terminalia: Epandrium pubescent submedially, with 16 setae near posterior and ventral margins per side (Fig. 29 A). Paramere nearly triangular, lacking pubescence, with 4 sensilla submedially (Fig. 29 C). Aedeagus pubescent on distal 2/3 (Fig. 29 D).

Measurements. BL = 3.67 mm in holotype, THL = 1.93 mm, WL = 3.33 mm, WW = 1.48 mm, arb = 7/3, avd = 0.88, adf = 1.88, flw = 1.88, FW/HW = 0.42, ch/o = 0.05, prorb = 0.62, rcorb = 0.54, vb = 0.42, dcl = 0.44, presctl = 0.58, sctl = 1.35, sterno = 0.83, orbito = 2.18, dcp = 0.26, sctlp = 0.97, C = 1.93, 4c = 1.63, 4v = 2.26, 5x = 1.17, ac = 3.00, M = 0.60, C3F = 0.98.

Type specimens. Holotype ♂ (SCAU, No. 123137), CHINA: Maoershan, Guilin, Guangxi, 700 m, 18.x.2004, ex tree trunk, HW Chen.

Distribution. China (Guangxi).

Etymology. A combination of the Latin words “ angustus ” (= narrow) + “ foliaceus ” (= folium), referring to the aedeagus narrowed distally.