Leucophenga umbratula Duda, 1924

Huang, Jia, Su, Yirui & Chen, Hongwei, 2017, The genus Leucophenga (Diptera, Drosophilidae), part VII: the subpollinosa species group from China, with morphological and molecular evidence, Zootaxa 4247 (3), pp. 201-245 : 223-225

publication ID	https://doi.org/ 10.11646/zootaxa.4247.3.1
publication LSID	lsid:zoobank.org:pub:0C795602-87DE-412D-ADE4-153702AA887B
DOI	https://doi.org/10.5281/zenodo.5665932
persistent identifier	https://treatment.plazi.org/id/8C46016E-FFB8-FFF0-FEF0-F961FB3F0468
treatment provided by	Plazi
scientific name	Leucophenga umbratula Duda, 1924
status

Treatment

Leucophenga umbratula Duda, 1924 View in CoL

( Figs. 2 View FIGURE 2 F, 4A, 4B, 8C–E, 14)

Leucophenga umbratula Duda, 1924a: 187 View in CoL ; 1924b: 238; Lin & Wheeler, 1972: 253; Okada, 1987: 679.

Diagnosis. This species is mostly similar to L. argentina in having the wing fuscous along R1 only ( Fig. 2 View FIGURE 2 A, F), and the shape of aedeagus ( Figs. 10 View FIGURE 10 E, 14D), but can be distinguished from the latter by the color patterns of abdominal tergites in both male ( Fig. 8 View FIGURE 8 C, D) and female ( Fig. 8 View FIGURE 8 E), and the paramere rounded apically ( Fig. 14 View FIGURE 14 C).

However, the specimens show distinctly difference from the latest and most relevant descriptions about L. umbratula from Taiwan, China ( Lin & Wheeler 1972; Okada 1987) in having the wing fuscous along R1 only ( Fig. 2 View FIGURE 2 F), while no conspicuous difference could be found in having the thorax mostly dark colored ( Fig. 4 View FIGURE 4 A, B), and in the color patterns of abdominal tergites in male ( Fig. 8 View FIGURE 8 C, D). Therefore, all of the specimens were identified as L. umbratula to avoid further confusion.

Description. Ocellar triangle dark brown, with ca. 0–2 seta(e) above ocellar setae. Frons yellow in male, brownish yellow in female. Pedicel brownish yellow; first flagellomere yellow. Clypeus brownish. Palpus brownish yellow to brownish. Mesonotum brownish yellow, with four brownish, longitudinal stripes submedially and laterally in male ( Fig. 4 View FIGURE 4 A), brownish yellow, brownish before scutellum in female. Postpronotal lobe brownish yellow ( Fig. 4 View FIGURE 4 B). Acrostichal setulae in ca. 6–8 irregular rows ( Fig. 4 View FIGURE 4 A). Scutellum brown, dark brown laterally, brownish yellow at tip ( Fig. 4 View FIGURE 4 A). Pleura with a brown, longitudinal stripe above ( Fig. 4 View FIGURE 4 B). Katepisternum and meron brownish yellow, brownish above ( Fig. 4 View FIGURE 4 B). Wing ( Fig. 2 View FIGURE 2 F): Costal vein between R2+3 and R4+5 distally with ca. 4–5 peg-like spinules on ventral surface. Abdominal tergites brown to dark brown, mostly yellow medially between 2nd to 4th or 5th tergites in male ( Fig. 8 View FIGURE 8 C, D), entirely dark brown in female ( Fig. 8 View FIGURE 8 E). Male terminalia: Epandrium with ca. 7 setae near posterior margin and ventral corner per side ( Fig. 14 View FIGURE 14 A). Surstylus rounded apically ( Fig. 14 View FIGURE 14 A). Hypandrium with 1 sensillum ( Fig. 14 View FIGURE 14 B). Paramere with a remarkable wrinkle subdorsally and ca. 6 sensilla aligned above distally ( Fig. 14 View FIGURE 14 C). Aedeagus slender, slightly expanded on posterodorsal 1/3 ( Fig. 14 View FIGURE 14 D).

Measurements. BL = 2.47–2.73 mm in 5♂, 2.47–2.87 mm in 5♀, THL = 1.10–1.17 mm in ♂, 1.10–1.20 mm in ♀, WL = 2.10–2.40 mm in ♂, 2.00– 2.27 mm in ♀, WW = 1.00– 1.13 mm in ♂, 0.97–1.10 mm in ♀, arb = 7–8/ 3–4, avd = 0.77–1.00, adf = 1.50–2.17, flw = 1.71–2.50, FW/HW = 0.32–0.40, ch/o = 0.03–0.06, prorb = 0.48–0.64, rcorb = 0.50–0.80, vb = 0.30–0.50, dcl = 0.30–0.57, presctl = 0.38–0.56, sctl = 1.23–1.56, sterno = 0.70–0.86, orbito = 1.29–2.25, dcp = 0.20–0.29, sctlp = 0.92–1.09, C = 2.30–2.67, 4c = 1.10–1.42, 4v = 2.07–2.56, 5x = 1.58–2.00, ac = 1.94–2.43, M = 0.73–0.96, C3F = 0.76–0.83.

Specimens examined. CHINA: 2♂ ( SCAU, Nos 128966, 67), Mangshan, Yizhang , Hunan, 24°55'N, 112°45'E, 1200m, 3.x.2004, ex tussocks, MF Xu GoogleMaps ; 2♂ ( SCAU, Nos 128969, 70), Huolushan, Guangzhou , Guangdong, 23°11'N, 113°22'E, 200m, 5.iv.2005, ex tussocks, MF Xu GoogleMaps ; 1♀ ( SCAU, No. 128968), Longdong, Guangzhou , Guangdong, 23°11'N, 113°22'E, 100m, 8.iv.2015, ex tussock, YL Wang GoogleMaps ; 1♂ ( SCAU, No. 128983), Baihualing, Baoshan , Yunnan, 1370m, 15.vi.2011, ex tussock, YR Su ; 3♂, 1♀ ( SCAU, Nos 128979–82), Muyiji Park, Ximeng , Yunnan, 1100m, 4.iv.2011, ex tussocks, ZF Shao ; 1♂ ( SCAU, No. 128978), Jinuoshan, Jinghong , Yunnan, 22°02'N, 101°00'E, 800m, 17.iv.2007, ex tussock, HW Chen GoogleMaps ; 1♂ ( SCAU, No. 128977), Hesong, Menghai , Yunnan, 1750m, 23.iii.2011, ex tree trunk, SJ Yan ; 2♂, 4♀ ( SCAU, Nos 128971–76), Menglun, Mengla , Yunnan, 780m, 12.iv.2010, ex tussocks, YR Su.