Leucophenga orientalis Lin & Wheeler

Zhou, Lan & Chen, Hong-Wei, 2015, The genus Leucophenga (Diptera, Drosophilidae), part V: the mutabilis species group from East Asia, with morphological and molecular evidence, Zootaxa 4006 (1) : -

Leucophenga orientalis Lin & Wheeler

( Figs 3 C, 3B, 4K, 4L, 9)

Leucophenga orientalis Lin & Wheeler, 1972: 249 ; Okada, 1989: 808.

Diagnosis. This species is somewhat similar to L. bellula in the pattern of abdominal tergites ( Fig. 4 K, 4L), but can be distinguished from the latter by the 2nd abdominal tergite with brown patch ( Fig. 4 K, 4L), and the scutellum yellow, with brown margin ( Fig. 3 C).

Description. Male and female: Frons yellow to yellowish brown. Pedicel and first flagellomere mostly yellow. Palpus brown in male, dark brown in female. Mesonotum yellow ( Fig. 3 C). Acrostichal setulae in ca. 12–14 irregular rows ( Fig. 3 C). Postpronotal lobe yellow ( Fig. 3 D). Pleura nearly yellow ( Fig. 3 D). Halter yellowish ( Fig. 3 D). Male terminalia: Epandrium with 10 setae near posterior margin and ventral corner per side ( Fig. 9 A). Paramere with ca. 15 sensilla distally ( Fig. 9 B). Aedeagus slender basally, with pubescence on distal 1/3 ( Fig. 9 B).

Measurements. BL = 2.33–2.8 mm in 5♂, 2.67–3.00 mm in 5♀, ThL = 1.13–1.47 mm in ♂, 1.27–1.53 mm in ♀, WL = 2.33–3.07 mm in ♂, 2.33–2.87 mm in ♀, WW = 0.87–1.20 mm in ♂, 0.87–1.20 mm in ♀, arb = 5–7/2–3, avd = 0.80–1.00, adf = 2.00–2.50, flw = 2.00–3.00, FW/HW = 0.36–0.44, ch/o = 0.05–0.06, prorb = 0.50–1.33, rcorb = 0.75–1.17, vb = 0.33–0.67, dcl = 0.35–0.50, presctl = 0.47–0.64, sctl = 1.25–1.55, sterno = 0.67–0.82, orbito = 1.50–2.50, dcp = 0.21–0.42, sctlp = 0.75–1.00, C = 2.26–2.81, 4c = 1.13–1.55, 4v =1.92–2.75, 5x = 1.17– 1.83, ac = 1.89–2.83, M = 0.54–0.83, C3F = 0.63–0.74.

Specimens examined. CHINA: 10♂, 10♀ (SCAU, Nos 127403–22), Dawopu, Simianshan, Chongqing, 1050m, 8.vii.2014, ex tussock, YQ Liu; 10♂, 10♀ (SCAU, Nos 127423–42), Shuiliandong, Simianshan, Chongqing, 1078m, 6, 9.vii.2014, ex tussock, Y Zhang, L Zhou; 10♂, 10♀ (SCAU, Nos 127443–62), Zhangjiashan, Simianshan, Chongqing, 1078m, 9–10.vii.2014, ex tussock, QS Gao; 7♂, 7♀ (SCAU, Nos 127463– 76), Dajing, Kaixian, Chongqing, 20, 25.viii.2013, L Zhou; 1♂, 2♀ (SCAU, Nos 128187–89), Xingling, Badong, Hubei, 31°02′N, 110°20′, 7.x.2013, ex tussock, JJ Gao, 1♂ (SCAU, No. 127477), Foping, Hanzhong, Shaanxi, 32˚32′N, 107˚41′E, 1100m, 6.viii.2003, ex tussocks, HW Chen; 10♂, 10♀ (SCAU, Nos 127478–97), Haoping, Meixian, Shaanxi, 1252m, 16.viii.2003, JJ Gao; 10♂, 10♀ (SCAU, Nos 127498–517), Tianmushan, Linan, Zhejiang, 30.vii.2011 – 2.viii.2011, 6.vii.2013, ex tussock, ZF Shao, K Liu; 5♂, 4♀ (SCAU, Nos 127518–26), Jiulongshan, Suicang, Zhejiang, 4.vii.2013, ex tussock, ZF Shao, K Liu; 1♀ (SCAU, No. 127527), Leiguyu, Wuyishan, Jiangxi, 27˚43′N, 117˚57′E, 580m, 4.vi.2005, ex tree trunk, HL Cao; 2♀ (SCAU, Nos 127528, 29, 127913), Guanshan, Yichun, Jiangxi, 28˚56′N, 114˚59′E, 119m, 8.vi.2004, HW Chen; 1♀ (SCAU, No. 127530), Wulu, Taidong, Taiwan, 28.x.2012, HW Chen; 1♂, 1♀ (SCAU, Nos 127531, 32), Conghua, Guangzhou, Guangdong, 23˚26′N, 113˚30′E, 200m, 3.x.2003, ex tussocks, HW Chen; 10♂, 10♀ (SCAU, Nos 127533–52), Huolushan, Guangzhou, Guangdong, 19.iii.2005, MF Xu; 10♂, 10♀ (SCAU, Nos 127553–72), Nankunshan, Longmen, Guangdong, 20˚38′N, 114˚38′E, 450m, 2–5.iv.2004. HW Chen; 10♂, 10♀ (SCAU, Nos 127573–592), Nanling, Shaoguan, Guangdong, 5–6.x.2004, ex tussock, HW Chen; 9♂, 11♀ (SCAU, Nos 127593–612), Dinghushan, Zhaoqing, Guangdong, ex tussock, 5.v.2005, ex tussock, HW Chen; 1♂, 3♀ (SCAU, Nos 127613– 16), Diaoluoshan, Lingshui, Hainan, 18˚10′N, 108˚52′E, 1000m, 3.xii.2003, ex tussocks, HW Chen; 2♂, 4♀ (SCAU, Nos 127617–22), Maoershan, Guilin, Guangxi, 19.x.2004, ex tree trunks, XL Zhang; 11♂, 7♀ (SCAU, Nos 127623–640), Dashahe, Daozhen, Guizhou, 29˚08′N, 107˚34′E, 1326m, 14.viii.2011, ex tussock, YR Su, J Huang; 1♂ (SCAU, No. 127641), Mayanghe, Yanhe, Guizhou, 28˚39′N, 108˚15′E, 420m, 24.v.2012, ex tussock, JM Lu; 10♂, 10♀ (SCAU, Nos 127642–61), Xianheping, Xingyi, Guizhou, 14–15.vii.2014, ex tree trunks, YL Wang; 2♂, 5♀ (SCAU, Nos 127662–68), Emeishan, Sichuan, 29˚33′N, 103˚25′E, 810m, 16.viii.2013, JJ Gao; 1♂ (SCAU, No. 127669), Jizushan, Binchuan, Yunnan, 1900m, 8.vii.2009, ex tussocks, L Wang; 3♂, 2♀ (SCAU, Nos 127670–74), Hutiaoxia, Diqing, Yunnan, 22–23.viii.2011, ex tussocks, HW Chen, JJ Gao; 7♂, 13♀ (SCAU, Nos 127675–94), Menglun, Mengla, Yunnan, 17.iv.2004, ex tussocks, HW Chen, JJ Gao; 12♂, 1♀ (SCAU, Nos 127695–707), Wangtianshu, Mengla, Yunnan, 22–24.iv.2007, 13.x.2010, ex tree trunk, HW Chen, JJ Gao; 1♂ (SCAU, No. 127708), Hesong, Menghai, Yunnan, 11.iv.2011, ex tussock, JM Lu; 13♂, 5♀ (SCAU, Nos 127709– 26), Yixiang, Puer, Yunnan, 18–19.ix.2007, 12.v.2012, HW Chen, JJ Gao; 1♂, 1♀ (SCAU, Nos 127727, 28), Samage, Weixi, Yunnan, 24˚32'N, 101˚01'E, 1900m, 29.vii.2004, ex tree trunks, HW Chen; 10♂, 10♀ (SCAU, Nos 127729–48), Muyiji Park, Ximeng, Yunnan, 2–4.iv.2011, tussocks, JM Lu, ZF Shao, YR Su, SJ Yan; 1♂ (SCAU, No. 127749), Beibeng, Motuo, Xizang, 30.ix.2010, ex tussock, YR Sui.

Distribution. China (Zhejiang, Fujian, Jiangxi, Taiwan, Hubei, Guangdong, Hong Kong, Hainan, Guangxi, Chongqing, Sichuan, Guizhou, Yunnan, Xizang, Shaanxi), Japan (Ryukyu Is.), Korea.

Figures

FIGURE 3. Thorax of male: A, B. Leucophenga nigripalpis; C, D. L. orientalis; E, F. L. striatipennis; G, H. L. taiwanensis.

FIGURE 4. Color patterns of abdominal tergites of male and female (including all changes examined): A – C. Leucophenga angusta (male and female); D, E. L. bellula (male); F – I. L. magnipalpis (male and female); J. L. nigripalpis (male); K, L. L. orientalis (male and female); M. L. striatipennis (male); N, O. L. taiwanensis (male and female); P. Color legend.

FIGURE 9. Leucophenga orientalis Lin & Wheeler, 1972, male: A. Epandrium, surstylus and cercus (lateral view); B. hypandrium, paramere, aedeagus and aedeagal apodeme (lateral view). Scale bar = 0.1 mm.