Leucophenga spinifera Okada, 1987

Huang, Jia, Wang, Yalian, O’Grady, Patrick Michael, Su, Yirui & Chen, Hongwei, 2018, The genus Leucophenga (Diptera, Drosophilidae), part VIII: twenty-one species from the Oriental region, with morphological and molecular evidence, Zootaxa 4503 (1), pp. 1-70 : 35-38

Leucophenga spinifera Okada, 1987

( Figs. 2E , 5M–O , 9G, 9H , 13I, 13J , 21 )

Leucophenga spinifera Okada, 1987: 92 .

Diagnosis. This species strongly resembles L. varinervis in the colour patterns of abdominal tergites in both male ( Fig. 9G, I ) and female ( Fig. 9H, J ), and the shape of paramere ( Figs. 21C , 22C ), but can be distinguished from the latter in having the postocellar distinct ( Fig. 5M ); aedeagus apically hook-shaped, laterally mostly covered by its long process ( Fig. 21D ); see below for that species.

Description. Ocellar triangle dark brown, with ca. 2 or 3 setae above ocellar setae. Frons brownish ( Fig. 5M ). Pedicel brownish yellow; first flagellomere yellow ( Fig. 5M ). Clypeus entirely brown. Palpus brownish yellow ( Fig. 5M ). Mesonotum brownish yellow, usually brownish to brown in front of scutellum ( Fig. 5N ). Postpronotal lobe yellow ( Fig. 5O ). Acrostichal setulae in ca. 12–14 irregular rows ( Fig. 5N ). Scutellum brownish yellow to dark brown, black laterally, yellow at tip ( Fig. 5N ). Pleura with a brown to dark brown, longitudinal stripe above ( Fig. 5O ). Katepisternum and mesopleuron mostly yellow ( Fig. 5O ). Wing ( Fig. 2E ): nearly hyaline; costal vein between R 2+3 and R 4+5 distally with ca. 4–6 peg-like spinules on ventral surface; R 4+5 and M 1 slightly divergent distally; halter mostly yellowish, with a brownish patch at knob ( Fig. 5N ). Abdominal tergites dark brown, 2nd tergite yellow to brownish medially and laterally, 3rd tergite mostly yellow except for lateral region, setigerous laterally and on posterior margin in males ( Fig. 9G ), 3rd tergite yellow anteriorly in females ( Fig. 9H ), 4th tergite yellow anteriorly. Male terminalia: Epandrium lacking pubescence, with ca. 7 setae near posterior and ventral margins per side ( Fig. 21A ). Cercus lacking pubescence ( Fig. 21A ). Surstylus pubescent ( Fig. 21A ). Hypandrium with 1 sensillum ( Fig. 21B ). Paramere narrow basally, pubescent medially, with ca. 5 sensilla distally ( Fig. 21C ).

Measurements and indices. BL = 2.44–3.33 mm in 5♂, 2.61–2.73 mm in 5♀, ThL = 1.11–1.60 mm in ♂, 1.38–1.46 mm in ♀, WL = 2.00– 2.89 mm in ♂, 2.42–2.58 mm in ♀, WW = 0.89–1.33 mm in ♂, 1.07–1.13 mm in ♀, arb = 5–8/2–4, avd = 0.50–0.86, adf = 1.33–2.52, flw = 1.67–2.52, FW/HW = 0.20–0.38, ch/o = 0.04–0.05, prorb = 0.24–0.70, rcorb = 0.50–0.73, vb = 0.25–0.75, dcl = 0.36–0.45, presctl = 0.42–0.73, sctl = 1.11–1.83, sterno = 0.50–0.75, orbito = 1.25–1.89, dcp = 0.18–0.33, sctlp = 0.71–1.13, C = 2.07–2.60, 4c = 0.92–1.15, 4v = 1.26– 1.60, 5x = 0.67–1.00, ac = 1.33–2.17, M = 0.27–0.40, C3F = 0.64–0.73.

Specimens examined. CHINA: 3♂ ( SCAU, Nos 128406–08), Wuyishan , on the boundary between Jiangxi and Fujian, 27°32'N, 117°24'E, alt. 1000m, 15–19.viii.2001, ex tussocks, HW Chen ; 2♂ ( SCAU, Nos 128422, 23), Shuili, Nantou , Taiwan , 23°47'N, 120°51'E, alt. 366m, 28.x.2012, ex tree trunks, HW Chen ; 1♂ ( SCAU, No. 128424), Wulu, Taitung , Taiwan , 23°10'N, 121°02'E, alt. 740m, 28.x.2012, ex tussock, HW Chen ; 1 ♂ ( SCAU, No. 128515), Cenwanglaoshan, Tianlin , Guangxi, 24°28'N, 106°23'E, alt. 1134m, 29.vii.2016, ex tussock, L Gong ; 4♂, 1♀ ( SCAU, Nos 128516–20), Xincheng, Yingjiang , Yunnan, 24°47'N, 98°11'E, alt. 963m, 18.viii.2016, ex tussocks, HW Chen, YQ Liu ; 1♂ ( SCAU, No. 128521), Husa, Longchuan , Yunnan, 24°28'N, 97°45'E, alt. 1227m, 21.viii.2016, ex tussock, L Gong ; 1♂ ( SCAU, No. 128522), Nanling, Lancang , Yunnan, 22°48'N, 99°55'E, alt. 1867m, 12.viii.2016, ex tree trunk, HW Chen ; 15♂, 2♀ ( SCAU, Nos 128392–401, 128413–19), Yixiang, Pu'er , Yunnan, 22°47'N, 101°02'E, alt. 1200m, 18.ix.2007, 2.x.2011, 12.v.2012, 12.xii.2012, 28.v.2015, ex tussocks, HW Chen, JJ Gao ; 3♂ ( SCAU, Nos 128409–11), Muyiji Park, Ximeng , Yunnan, 22°37'N, 99°36'E, alt. 1103m, 2.iv.2011, 29.iv.2016, ex tussocks, YQ Liu, JM Lu, YR Su, YL Wang ; 2♂ ( SCAU, Nos 128523, 24), Guoqing, Jiangcheng , Yunnan, 22°31'N, 101°52'E, alt. 1105m, 5.viii.2016, ex tussock, YQ Liu ; 4♂ ( SCAU, Nos 128402– 05), Hesong, Menghai , Yunnan, 21°50'N, 100°06'E, alt. 1700m, 2–9.iv.2011, ex tussocks, JM Lu, ZF Shao, SJ Yan ; 1♂ ( SCAU, No. 128525), Menghun, Menghai , Yunnan, 21°48'N, 100°31'E, alt. 1634m, 10.viii.2016, ex tussock, HW Chen ; 1♂, 2♀ ( SCAU, Nos 128412, 128425, 128426), Menglun, Mengla , Yunnan, 21°41'N, 101°25'E, alt. 700m, 17.iv.2007, 12.iv.2010, ex tussocks, HW Chen, L Wang ; 1♂, 1♀ ( SCAU, Nos 128752, 53), Guanlei, Mengla , Yunnan, 21°38'N, 101°10'E, alt. 562m, 20.iv.2016, ex tree trunks, YQ Liu, YL Wang ; 2♀ ( SCAU, Nos 128420, 21), Tongmai, Bomi , Xizang, 30°06'N, 95°05'E, alt. 2000m, 12.x.2010, ex tree trunk, YR Su .

Distribution. China (Jiangxi, Fujian, Taiwan, Guangxi, Yunnan, Xizang), Nepal (Taplejung).

Figures

FIGURE 2. Wing of male: A. Leucophenga jacobsoni; B. L. kurahashii; C. L. setipalpis; D. L. sorii; E. L. spinifera; F. L. varinervis; G, H. L. acantha Huang & Chen, sp. nov. Scale bars = 1 mm.

FIGURE 5. Lateral view of head, dorsal and lateral views of thorax in males: A, B, C. Leucophenga jacobsoni; D, E, F. L. kurahashii; G, H, I. L. setipalpis; J, K, L. L. sorii; M, N, O. L. spinifera.

FIGURE 9. Colour patterns of abdominal tergites: A. Leucophenga jacobsoni; B, C. L. kurahashii; D, E. L. setipalpis; F. L. sorii; G, H. L. spinifera; I, J. L. varinervis; K. L. acantha Huang & Chen, sp. nov.; L. L. alafumosa Huang & Chen, sp. nov.

FIGURE 13. Male terminalia (provided as a supplement for the line drawing of each species): A, B. Leucophenga jacobsoni; C, D. L. kurahashii; E, F. L. setipalpis; G, H. L. sorii; I, J. L. spinifera.

FIGURE 21. Leucophenga spinifera Okada, 1987, 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.

FIGURE 22. Leucophenga varinervis Duda, 1923, 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.