Leucophenga nigripalpis Duda

Zhou, Lan & Chen, Hong-Wei, 2015, The genus Leucophenga (Diptera, Drosophilidae), part V: the mutabilis species group from East Asia, with morphological and molecular evidence, Zootaxa 4006 (1) : -

Leucophenga nigripalpis Duda

( Figs 3 A, 3B, 4J, 8)

Leucophenga nigripalpis Duda, 1924: 188 ; Okada, 1989: 808.

Diagnosis. This species is somewhat similar to L. magnipalpis in the patterns of abdominal tergites ( Fig. 4 J), but can be distinguished from the latter by having the mesonotum yellow ( Fig. 3 A), and the pleura yellow, with brown patches above ( Fig. 3 B).

Description. Male and female: Frons yellow to yellowish brown. Pedicel mostly yellowish brown; first flagellomere yellow. Palpus dark brown in male, black in female. Acrostichal setulae in ca. 14–16 irregular rows ( Fig. 3 A). Postpronotal lobe yellow ( Fig. 3 B). Scutellum brown along basal margin, brownish yellow medially, pale along distal margin ( Fig. 3 A). Halter white ( Fig. 3 B). Abdominal tergites yellow, with brown patches ( Fig. 4 J).

Male terminalia: Epandrium with 3 setae near posterior margin and 5 setae on ventral corner per side ( Fig. 8 A). Paramere with ca. 5 sensilla subapically ( Fig. 8 B). Aedeagus slender basally, with pubescence on distal 1/3 ( Fig. 8 B).

Measurements. BL = 2.40–3.20 mm in 5♂, 2.80–2.85 mm in 2♀, ThL = 1.20–1.73 mm in ♂, 1.40–1.44 mm in ♀, WL = 2.80–3.60 mm in ♂, 3.00– 3.20 mm in ♀, WW = 1.07–1.47 mm in ♂, 1.20–1.35 mm in ♀, arb = 5–6/2– 3, avd = 0.75–1.50, adf = 1.33–2.67, flw = 1.67–2.67, FW/HW = 0.26–0.40, ch/o = 0.04–0.06, prorb = 0.86–1.00, rcorb = 0.86–1.00, vb = 0.50–1.00, dcl = 0.20–0.41, presctl = 0.44–1.14, sctl = 0.93–1.20, sterno = 0.55–0.73, orbito = 1.33–2.50, dcp = 0.19–0.36, sctlp = 0.88–1.14, C = 2.28–2.72, 4c = 1.13–1.50, 4v =2.00–2.58, 5x = 1.22– 1.57, ac = 1.83–2.50, M = 0.61–0.75, C3F = 0.67–0.78.

Specimens examined. CHINA: 1♂ (SCAU, Nos 127750), Guanshan, Taidong, Taiwan, 23˚10'N, 121˚02'E, 740m, 28.x.2012, HW Chen; 2♂ (SCAU, Nos 127751, 52), Nanling, Shaoguan, Guangdong, 680m, 5.v.2004, ex tussocks, HW Chen; 1♂ (SCAU, No. 127753), Jingfengling, Ledong, Hainan, 18.iv.2004, HW Chen; 4♂, 2♀ (SCAU, Nos 127754–59), Hesong, Menghai, Yunnan, 29.iii.2011, ex tussocks, JM Lu; 1♂ (SCAU, No. 127760), Hutiaoxia, Diqing, Yunnan, 22,23. viii.2011, ex tussock, HW Chen; 1♂ (SCAU, No. 127761), Xiding, Menghai, Yunnan, 1957m, 16.iv.2010, ex tussocks, D He; 2♂ (SCAU, Nos 127762, 63), Yixiang, Puer, Yunnan, 1100m, 2.x.2011, HW Chen.

Distribution. China ( Taiwan, Guangdong, Hainan, Yunnan), Malaysia, Indonesia, Papua New Guinea.

Figures

FIGURE 3. Thorax of male: A, B. Leucophenga nigripalpis; C, D. L. orientalis; E, F. L. striatipennis; G, H. L. taiwanensis.

FIGURE 4. Color patterns of abdominal tergites of male and female (including all changes examined): A – C. Leucophenga angusta (male and female); D, E. L. bellula (male); F – I. L. magnipalpis (male and female); J. L. nigripalpis (male); K, L. L. orientalis (male and female); M. L. striatipennis (male); N, O. L. taiwanensis (male and female); P. Color legend.

FIGURE 8. Leucophenga nigripalpis Duda, 1924, male: A. Epandrium, surstylus and cercus (lateral view); B. hypandrium, paramere, aedeagus and aedeagal apodeme (lateral view). Scale bar = 0.1 mm.