Leucophenga quadrifurcata, Huang, Jia, Li, Tong & Chen, Hongwei, 2013

Huang, Jia, Li, Tong & Chen, Hongwei, 2013, The genus Leucophenga (Diptera, Drosophilidae), part III: the interrupta species group from the Oriental region, with morphological and molecular evidence, Zootaxa 3750 (5), pp. 587-600 : 596

Leucophenga quadrifurcata sp. nov.

( Figs. 2 J, 2K, 2L, 3H, 7)

Diagnosis. This species differs from the other species of the interrupta group in having the following characters: wing clouded on r-m and dm-cu crossveins ( Fig. 2 J); aedeagus not bifurcated; aedeagal basolateral process slender basally, quadrifurcated distally ( Fig. 7 D).

Description. Ocellar triangle yellowish brown to dark brown, with 3–4 setae above ocellar setae. Frons brownish yellow to yellowish brown. Pedicel yellowish brown; first flagellomere yellow. Clypeus brown. Scutum yellowish brown ( Fig. 2 K). Postpronotal lobe brownish yellow ( Fig. 2 L). Scutellum yellowish brown ( Fig. 2 K). Wing ( Fig. 2 J): Costal vein between R2+3 and R4+5 distally with 6–8 peg-like spinules on ventral surface. Halter mostly brownish. Abdominal tergites black ( Fig. 3 H); second mostly yellow, but brown posteriorly; third and fourth each with a pair of narrow, yellow patches submedially on anterior margin, yellow laterally; fifth to sixth mostly black. Male terminalia: Epandrium with ca. 10 setae near posterior margin and ventral corner per side ( Fig. 7 A). Paramere nearly rectangular distally, with several weak wrinkles, 2 sensilla and pubescence subdorsally ( Fig. 7 C).

Measurements. BL = 2.93 mm in holotype (range in 1♂ and 2♀ paratypes: 3.60 mm in ♂, 3.50–3.73 mm in ♀), THL = 1.53 mm (1.77 mm in ♂, 1.70–1.93 mm in ♀), WL = 2.60 mm (3.00 mm in ♂, 3.10–3.27 mm in ♀), WW = 1.20 mm (1.33 mm in ♂, 1.24–1.40 mm in ♀), arb = 5/3 (7–8/3–4), avd = 0.91 (0.81–0.90), adf = 1.94 (2.06–2.13), flw = 1.56 (2.25), FW/HW = 0.38 (0.34–0.37), ch/o = 0.03 (0.03–0.04), prorb = 0.56 (0.63–0.63), rcorb = 0.72 (0.65–0.75), vb = 0.29 (0.39–0.46), dcl = 0.39 (0.45–0.55), presctl = 0.61 (0.48–0.64), sctl = 1.29 (1.03–1.13), sterno = 0.75 (0.78–0.86), orbito = 1.89 (2.00), dcp = 0.21 (0.19–0.20), sctlp = 1.22 (1.11–1.13), C = 2.35 (2.69–2.71), 4c = 1.08 (0.93–0.95), 4v = 1.81 (1.68–1.82), 5x = 0.75 (0.82–1.00), ac = 2.67 (2.10–2.18), M = 0.41 (0.36–0.39), C3F = 0.85 (0.88).

Type specimens. Holotype ♂ (SCAU, No. 121883), CHINA: Muyiji, Ximeng, Yunnan, 1100m, 2.iv.2011, ex tussock, SJ Yan. Paratypes: 1♂, 2♀ (SCAU, Nos 123296–98), CHINA: Yixiang, Puer, Yunnan, 27°12'N, 100°03'E, 1400m, 29.iii.2013, ex tussocks, JJ Gao.

Etymology. A combination of the Latin word “ quadrus ” (= four) + “foliaceus” (= folium), referring to the aedeagal basolateral process quadrifurcated distally.

Distribution. China (Yunnan).

Figures

FIGURE 2. Wing, mesonotum, scutellum and pleura of male: A, B, C. Leucophenga interrupta Duda, 1924; D, E, F. Leucophenga neointerrupta Fartyal & Toda, 2005; G, H, I. Leucophenga bifurcata sp. nov.; J, K, L. Leucophenga quandrifurcata sp. nov.; M, N, O. Leucophenga retifoliacea sp. nov.

FIGURE 3. Patterns of abdominal tergites of male and female: A, B. Leucophenga interrupta; C, D, E, F. L. neointerrupta; G. L. bifurcata sp. nov.; H. L. quandrifurcata sp. nov.; I, J. L. retifoliacea sp. nov.; K. Color legend.

FIGURE 7. Leucophenga quandrifurcata sp. nov., male terminalia in lateral view: A. epandrium, surstylus and cercus; B. hypandrium, paramere, gonopods, aedeagus and aedeagal apodeme; C. paramere; D. aedeagus. Scale bars = 0.1 mm.