Leucophenga striatipennis Okada

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 striatipennis Okada

( Figs 1 C, 3E, 3F, 4M, 10)

Leucophenga striatipennis Okada, 1989: 804 .

Diagnosis. This species resembles L. taiwanensis in the wing color pattern ( Fig. 1 C, D), but can be distinguished from the latter by having the scutellum brown ( Fig. 3 E) and nearly black abdominal tergites ( Fig. 4 M); see under that species.

Description. Male and female: Frons yellow to yellowish brown. Pedicel mostly yellowish brown; first flagellomere yellow. Mesonotum brownish yellow ( Fig. 3 E). Acrostichal setulae in ca. 16 irregular rows ( Fig. 3 E). Postpronotal lobe yellow ( Fig. 3 F). Pleura yellow, with brown patches ( Fig. 3 F). Halter yellow basally, white distally ( Fig. 3 F). Male terminalia: Epandrium with 12 setae near posterior margin and ventral corner per side ( Fig. 10 A). Paramere with 6 sensilla medially ( Fig. 10 B). Aedeagus with pubescence on distal 1/5 ( Fig. 10 B).

Measurements. BL = 2.53–2.93 mm in 5♂, 2.40–2.67 mm in 2♀, ThL = 1.13–1.27 mm in ♂, 1.00– 1.40 mm in ♀, WL = 2.40–2.73 mm in ♂, 2.40–2.87 mm in ♀, WW = 0.93–1.00 mm in ♂, 0.87–1.07 mm in ♀, arb = 6–6/2– 3,avd = 0.67–1.50, adf = 1.25–2.50, flw = 1.50–3.50, FW/HW = 0.33–0.45, ch/o = 0.04–0.07, prorb = 0.58–1.33, rcorb = 0.56–1.17, vb = 0.33–0.50, dcl = 0.41–0.60, presctl = 0.47–0.89, sctl = 1.17–1.45, sterno = 0.60–0.80, orbito = 1.33–2.50, dcp = 0.17–0.21, sctlp = 0.71–1.00, C = 2.12–2.82, 4c = 0.85–1.55, 4v =1.30–2.72, 5x = 0.75– 2.20, ac = 1.88–2.83, M = 0.30–1.00, C3F = 0.71–0.82.

Specimens examined. CHINA: 2♂, 1♀ (SCAU, Nos 128183–185), Jianfengling, Ledong, Hainan, 30.vii.2002, 20–24.iv.2007, HW Chen; 1♀ (SCAU, No. 1278186), Hesong, Menghai, Yunnan, 8.iv.2011, ex tussock, JM Lu; 2♂ (SCAU, Nos 128187, 88), Menglun, Mengla, Yunnan, 12.iv.2010, 4.xi.2010, ex tussock, HW Chen.

Distribution. China ( Taiwan, Hainan, Guangxi, Guizhou, Yunnan), Thailand, Borneo, Papua New Guinea.

Figures

FIGURE 1. The NJ phylogenetic tree of the mutabilis species group. The numbers around the nodes are bootstrap values (BP, whth 1,000 re-sampling replicates).

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 10. Leucophenga striatipennis Okada, 1989, male: A. Epandrium, surstylus and cercus (lateral view); B. hypandrium, paramere, aedeagus and aedeagal apodeme (lateral view). Scale bar = 0.1 mm.