Leucophenga formosa Okada 1987
Creators: name: Huang, Jia
name: Su, Yirui
name: Chen, Hongwei
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Drosophilidae
Leucophenga
Leucophenga formosa

description: Leucophenga formosa Okada, 1987
(Figs. 2 C, 3E, 3F, 7D, 12)
Leucophenga formosa Okada, 1987: 677.
Diagnosis. This species resembles L. cultella sp. nov. in having the wing fuscous along R1 and costa (Fig. 2 C, I), and the color patterns of abdominal tergites in both male (Figs. 7 D, 8J) and female (Fig. 8 K), but can be distinguished from the latter by having the thorax mostly dark colored (Fig. 3 E, F), the paramere narrowed basally (Fig. 12 C), and the aedeagus thick, reticulated medially, laterally with a thick process (Fig. 12 D); see below that species.
However, the specimens show somewhat differences from the description of the holotype from Taiwan, China (Okada 1987) in the color patterns of abdominal tergites in male (Fig. 7 D), and the structure of aedeagus (Fig. 12 D), while no conspicuous difference could be found in the patterns of wing (Fig. 2 C), and the shape of paramere and aedeagus (Fig. 12 C, D; Fig. 1 F in Okada 1987); moreover, parts of the specimens were collected near the type locality. Therefore, all of the specimens were identified as L. formosa to avoid further confusion.
Description. Ocellar triangle dark brown, with ca. 0–2 seta(e) above ocellar setae. Frons yellowish to brownish, with an indistinct, brown, longitudinal stripe medially. Pedicel brownish yellow to brownish; first flagellomere yellow to brownish yellow. Clypeus brownish to brown. Palpus yellow to brownish yellow. Mesonotum mostly with three broad, brown, longitudinal stripes medially and laterally (Fig. 3 E). Postpronotal lobe yellow to brownish yellow (Fig. 3 F). Acrostichal setulae in ca. 10–12 irregular rows (Fig. 3 E). Scutellum dark brown, brown at tip in male (Fig. 3 E), brownish yellow at tip in female. Pleura, katepisternum and meron mostly brown above (Fig. 3 F). Wing (Fig. 2 C): Costal vein between R2+3 and R4+5 distally with ca. 5–6 peg-like spinules on ventral surface. Midleg obviously brown on knees. Abdominal tergites mostly dark brown (Fig. 7 D), with a pair of yellow patches submedially between 2nd to 3rd tergites in both male and female. Male terminalia: Epandrium with ca. 4 setae near posterior margin per side (Fig. 12 A). Surstylus rounded apically (Fig. 12 A). Hypandrium with 1 sensillum (Fig. 12 B). Paramere with ca. 5 sensilla distodorsally (Fig. 12 C). Aedeagus thick, acute apically (Fig. 12 D).
Measurements. BL = 2.07–2.53 mm in 5♂, 2.47–2.67 mm in 5♀, THL = 0.90–1.03 mm in ♂, 1.07–1.17 mm in ♀, WL = 1.87–2.07 mm in ♂, 2.23–2.33 mm in ♀, WW = 0.90–0.97 mm in ♂, 1.00– 1.17 mm in ♀, arb = 6/2–3, avd = 0.90–1.09, adf = 1.43–1.83, flw = 1.57–2.33, FW/HW = 0.40–0.46, ch/o = 0.03–0.05, prorb = 0.64–0.79, rcorb = 0.70–0.84, vb = 0.27–0.44, dcl = 0.31–0.45, presctl = 0.38–0.58, sctl = 1.23–1.62, sterno = 0.64–0.74, orbito = 2.00–2.25, dcp = 0.23–0.30, sctlp = 0.91–1.18, C = 2.36–2.59, 4c = 1.07–1.23, 4v = 1.93–2.36, 5x = 1.43–2.11, ac = 2.42–3.00, M = 0.63–0.79, C3F = 0.73–0.79.
Specimens examined. CHINA: 3♂ (SCAU, Nos 128906–08), Shennongjia, Hubei, 1720m, 4.viii.2005, ex tree trunks, HW Chen; 1♂, 1♀ (SCAU, Nos 128904, 05), Wulai, Hsinpei, Taiwan, 24°51'N, 121°33'E, 490m, 19.x.2012, ex tussocks, HW Chen; 1♂ (SCAU, No. 128909), Diaoluoshan, Lingshui, Hainan, 18°10'N, 108°52'E, 1000m, 3.xii.2003, ex tussock, HW Chen; 1♂, 2♀ (SCAU, Nos 128910–12), Maoershan, Guilin, Guangxi, 25°48'N, 110°24'E, 700m, 18.x.2004, ex tree trunks, HW Chen; 1♂, 1♀ (SCAU, Nos 128913, 14), Simianshan, Jiangjin, Chongqing, 28°39'N, 106°25'E, 1130m, 9.vii.2014, ex tussocks, L Zhou; 3♂, 1♀ (SCAU, Nos 128915–18), Xianheping, Xinglong, Guizhou, 1630m, 16.vii.2014, ex tussocks, QS Gao, L Zhou; 1♂ (SCAU, Nos 128935), Hutiaoxia, Diqing, Yunnan, 2000m, 23.viii.2011, ex tussocks, HW Chen; 2♂ (SCAU, Nos 128933, 34), Baihualing, Baoshan, Yunnan, 25°18'N, 98°48'E, 1500m, 14.vi.2011, ex tussocks, ZF Shao; 2♂, 3♀ (SCAU, Nos 128928–32), Muyiji Park, Ximeng, Yunnan, 22°37'N, 99°36'E, 1100m, 2.iv.2011, ex tussocks, ZF Shao, YR Su, SJ Yan; 3♂, 6♀ (SCAU, Nos 128919–27), Hesong, Menghai, Yunnan, 1750m, 9.iv.2011, ex tree trunks, ZF Shao, YR Su.
Distribution. China (Hubei, Taiwan, Hainan, Guangxi, Chongqing, Guizhou, Yunnan).
description: Published as part of 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, pp. 201-245 in Zootaxa 4247 (3) on pages 220-221, DOI: 10.11646/zootaxa.4247.3.1, http://zenodo.org/record/438516