Leucophenga delta Huang &amp; Wang &amp; O'Grady &amp; Su &amp; Chen 2018, sp. nov.
Creators: name: Huang, Jia
name: Wang, Yalian
name: O'Grady, Patrick Michael
name: Su, Yirui
name: Chen, Hongwei
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Drosophilidae
Leucophenga
Leucophenga delta

description: <i>Leucophenga delta</i> Huang &amp; Chen, sp. nov. (Figs. 3D, 7A–C, 10F, 15A, 15B, 27) <b>Diagnosis.</b> This species is most similar to <i>L</i>. <i>valvata</i> <b>sp. nov.</b> in the having the postocellar setae minute (Figs. 7A, 8M), the mesonotum and scutellum entirely brownish yellow (Figs. 7B, 8N), the pleura lacking stripe above (Figs. 7C, 8O), and the wing mostly clouded (Figs. 3D, 4E), but can be distinguished from the latter in having the epandrium with pubescence and setae (Fig. 27A); surstylus rounded and pubescent (Fig. 27A); paramere triangular, apically acute (Fig. 27C); aedeagus ventrolaterally with a long process (Fig. 27D); see below for that species. <b>Description.</b> Ocellar triangle dark brown, with ca. 3–5 setae above ocellar setae. Frons brownish to brown (Fig. 7A). Orb 3 and Orb 2 parallel (Fig. 7A). Pedicel brownish; first flagellomere yellow (Fig. 7A). Clypeus entirely brownish. Palpus dark yellow (Fig. 7A). Postpronotal lobe brownish yellow (Fig. 7C). Acrostichal setulae in ca. 12–14 irregular rows (Fig. 7B). Katepisternum and mesopleuron mostly yellow to dark yellow (Fig. 7C). Wing (Fig. 3D): Costal vein between R 2+3 and R 4+5 distally with ca. 6 or 7 peg-like spinules on ventral surface; R 4+5 and M 1 slightly convergent distally; halter yellow, usually with dark yellow to brownish yellow patches at stem and knob (Fig. 7C). Abdominal tergites brownish to black, 2nd tergite yellow submedially and laterally, 3rd tergite not shortened in males, yellow submedially and laterally, 4th tergite yellow submedially and sublaterally (Fig. 10F). Male terminalia: Epandrium with ca. 10 setae near posterior margin and ventral corner per side (Fig. 27A). Cercus pubescent (Fig. 27A). Paramere with ca. 1 sensillum submediodorsally and ca. 4 ones distally (Fig. 27C). <b>Measurements and indices.</b> BL = 4.00 mm in holotype (range in 4&amp;male; and 5&amp;female; paratypes: 3.67–4.00 in &amp;male;, 2.67– 3.13 in &amp;female;), ThL = 2.27 mm (2.00– 2.30 in &amp;male;, 1.43–1.67 in &amp;female;), WL = 3.93 mm (3.43–3.83 in &amp;male;, 2.43–3.07 in &amp;female;), WW = 1.80 mm (1.57–1.73 in &amp;male;, 1.15–1.67 in &amp;female;), arb = 9/5 (7–9/3–5), avd = 0.75 (0.78–1.00), adf = 2.67 (2.00– 2.29), flw = 2.20 (1.53–2.15), FW/HW = 0.38 (0.29–0.38), ch/o = 0.03 (0.02–0.03), prorb = 0.069 (0.55–0.67), rcorb = 0.86 (0.70–0.83), vb = 0.50 (0.44–0.54), dcl = 0.52 (0.47–0.58), presctl = 0.44 (0.45–0.56), sctl = damaged (1.12–1.33), sterno = 0.78 (0.67–0.82), orbito = 1.18 (1.14–1.54), dcp = 0.23 (0.23–0.32), sctlp = 1.16 (1.11–1.29), C = 2.38 (1.98–2.58), 4c = 1.29 (1.15–1.39), 4v = 2.31 (1.76–2.19), 5x = 1.17 (1.06–1.33), ac = 2.42 (2.27–3.31), M = 0.62 (0.53–0.73), C3F = 0.84 (0.77–0.86). <b>Type specimens.</b> Holotype &amp;male; (SCAU, No. 128553), CHINA: Wangtianshu, Mengla, Yunnan, 21°28'N, 101°38'E, alt. 600m, 30.ix.2011, ex tree trunk, HW Chen. Paratypes: CHINA: 6&amp;male;, 6&amp;female; (SCAU, Nos 128554–65), same data as holotype; 1&amp;male; (SCAU, No. 128566), Wuliangshan, Jingdong, Yunnan, 24°51'N, 100°23'E, alt. 1800m, 27.vii.2006, ex tree trunk, T Li; 4&amp;male;, 3&amp;female; (SCAU, Nos 128567–73), Menglun, Mengla, Yunnan, 21°41'N, 101°25'E, alt. 700–780m, 12.ix.2001, 17.iv.2007, 28.ix.2011, ex tussocks, HW Chen, JJ Gao; 4&amp;male;, 2&amp;female; (SCAU, Nos 128574– 79), Guanlei, Mengla, Yunnan, 21°38'N, 101°10'E, alt. 562m, 15.x.2012, 20.iv.2016, ex tree trunks, JJ Gao, J Huang, YL Wang. <b>Distribution.</b> China (Yunnan). <b>Etymology.</b> From the Greek word “ <i>delta</i> ” (= triangular), referring to the shape of paramere.
description: Published as part of <i>Huang, Jia, Wang, Yalian, O'Grady, Patrick Michael, Su, Yirui &amp; Chen, Hongwei, 2018, The genus Leucophenga (Diptera, Drosophilidae), part VIII: twenty-one species from the Oriental region, with morphological and molecular evidence, pp. 1-70 in Zootaxa 4503 (1)</i> on pages 45-46, DOI: 10.11646/zootaxa.4503.1.1, http://zenodo.org/record/5297894