Leucophenga trivittata Okada, 1990

Huang, Jia, Li, Tong & Chen, Hongwei, 2014, The genus Leucophenga (Diptera, Drosophilidae), part IV: the ornata species group from the East Asia, with morphological and molecular evidence (II), Zootaxa 3893 (1), pp. 1-55 : 34

Leucophenga trivittata Okada, 1990

( Figs 2 J, 7C, 7D, 10L, 14G, 14H, 26)

Leucophenga trivittata Okada, 1990: 679 .

Diagnosis. Abdominal 2nd tergite nearly entirely yellow ( Fig. 10 L); aedeagus clothed with thick pubescence ( Fig. 26 D).

Description. Ocellar triangle dark brown, with 1–2 setae above ocellar setae. Frons yellow to brownish yellow. Pedicel brownish yellow; first flagellomere yellow. Palpus black and large in female than in male. Clypeus yellowish brown. Mesonotum brownish yellow, brown before scutellum ( Fig. 7 C). Postpronotal lobe yellow ( Fig. 7 D). Acrostichal setulae in 10–12 irregular rows ( Fig. 7 C). Scutellum yellowish brown, dark laterally, pale at tip ( Fig 7 C, D). Pleura yellowish, brown below wing ( Fig. 7 C). Wing ( Fig. 2 J): Costal vein between R2+3 and R4+5 distally with 6–7 peg-like spinules on ventral surface. Abdominal 3rd to 5th tergites black, with yellow patches ( Fig. 10 L). Male terminalia: Epandrium nearly entirely pubescent, with numerous (ca. 24) setae dorsally per side ( Fig. 26 A). Paramere with 6 sensilla mediodorsally ( Fig. 26 C).

Measurements. BL = 3.07–3.33 mm in ♂, 3.27–3.50 mm in ♀ (range in 4♂ and 2♀), THL = 1.43–1.53 mm in ♂, 1.50–1.67 mm in ♀, WL = 2.40–2.80 mm in ♂, 2.70–2.83 mm in ♀, WW = 1.17–1.23 mm in ♂, 1.13 mm in ♀, arb = 7–8/3–4, avd = 0.86–0.96, adf = 1.65–2.25, flw = 1.76–2.00, FW/HW = 0.34–0.37, ch/o = 0.02–0.03, prorb = 0.46–0.61, rcorb = 0.63–0.71, vb = 0.41–0.48, dcl = 0.41–0.55, presctl = 0.44–0.55, sctl = 1.14–1.29, sterno = 0.52–0.74, orbito = 2.10–2.56, dcp = 0.23–0.30, sctlp = 0.89–1.06, C = 2.20–2.63, 4c = 1.16–1.32, 4v = 1.67–2.03, 5x = 0.77–0.89, ac = 2.26–2.59, M = 0.43–0.47, C3F = 0.95–0.99.

Specimens examined. CHINA: 1♀ (SCAU, No. 123132), Jinuoshan, Jinghong, Yunnan, 22°02'N, 101°00'E, 800m, 17.iv.2009, ex tree trunk, L Wu; 2♂, 1♀ (SCAU, Nos 123129 –31), Menglun, Mengla, Yunnan, 780m, 17.iv.2007, ex tussocks, HW Chen; 2♂ (SCAU, Nos 123133, 34), Wangtianshu, Mengla, Yunnan, 570m, 23.iv.2007, ex tree trunks, HW Chen.

Distribution. China (Yunnan), Thailand (Chiang Mai).

Figures

FIGURE 2. Wing of male: A. Leucophenga atrinervis; B. L. digmasoma; C. L. multipunctata; D. L. nigrinervis; E. L. pectinata in male; F. L. pectinata in female; G. L. pentapunctata; H. L. quadripunctata; I. L. regina; J. L. trivittata. Scale bars = 1 mm.

FIGURE 7. Dorsal and lateral thorax of male: A, B. Leucophenga regina; C, D. L. trivittata; E, F. L. acutifoliacea sp. nov.; G, H. L. albiterga sp. nov.; I, J. L. angustifoliacea sp. nov..

FIGURE 10. Abdominal tergite pattern in male: A. Leucophenga atrinervis; B, C. L. digmasoma; D. L. multipunctata; E. L. nigrinervis; F. L. pectinata; G, H. L. pentapunctata; I, J. L. quadripunctat; K. L. regina; L. L. trivittata.

FIGURE 26. Leucophenga trivittata, 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.