Leucophenga valvata Huang & Chen, 2018

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 : 58-60

publication ID	https://doi.org/ 10.11646/zootaxa.4503.1.1
publication LSID	lsid:zoobank.org:pub:5F058E32-AEF1-4070-8CC8-177B4CE140BA
DOI	https://doi.org/10.5281/zenodo.5305199
persistent identifier	https://treatment.plazi.org/id/03EE8C66-FFD4-FFAB-DE81-26BBCADAFE9B
treatment provided by	Felipe
scientific name	Leucophenga valvata Huang & Chen
status	sp. nov.

Treatment

Leucophenga valvata Huang & Chen View in CoL , sp. nov.

( Figs. 4E View FIGURE 4 , 8M–O View FIGURE 8 , 11J–L View FIGURE 11 , 12A–D View FIGURE 12 , 16I, 16J View FIGURE 16 , 36 View FIGURE 36 )

Diagnosis. This species is most similar to L. delta sp. nov. in the having the postocellar setae minute ( Figs. 7A View FIGURE 7 , 8M View FIGURE 8 ), the mesonotum and scutellum mostly brownish yellow ( Figs. 7B View FIGURE 7 , 8N View FIGURE 8 ), the pleura lacking stripe above ( Figs. 7C View FIGURE 7 , 8O View FIGURE 8 ), and the wing mostly clouded ( Figs. 3D View FIGURE 3 , 4E View FIGURE 4 ), but can be distinguished from the latter in having the epandrium lacking pubescence and seta ( Fig. 36A View FIGURE 36 ); surstylus caudally acute, lacking pubescence, with setae along caudal margin only ( Fig. 36A View FIGURE 36 ); paramere slender, basally acute ( Fig. 36C View FIGURE 36 ); aedeagus distally slightly curved ventrad, laterally with a long, apically narrow process ( Fig. 36D View FIGURE 36 ).

There is intraspecific variation in abdominal tergite colour pattern in this species ( Figs. 11J–L View FIGURE 11 , 12A–D View FIGURE 12 ). This species is comprised of a large proportion of “shortened” ( Figs. 11J–L View FIGURE 11 , 12A View FIGURE 12 ) and a few “normal” specimens ( Fig. 12B View FIGURE 12 ), but there is no other conspicuous intraspecific morphological variation between these two kinds of specimens. Therefore, all the specimens were identified as a single new species to avoid further confusion.

Description. Ocellar triangle dark brown, with ca. 2 or 3 setae above ocellar setae. Frons brownish ( Fig. 8M View FIGURE 8 ). Orb 3 and Orb 2 parallel ( Fig. 8M View FIGURE 8 ). Pedicel brownish yellow; first flagellomere yellow ( Fig. 8M View FIGURE 8 ). Clypeus entirely brownish. Palpus brownish yellow ( Fig. 8M View FIGURE 8 ). Postpronotal lobe brownish yellow ( Fig. 8O View FIGURE 8 ). Acrostichal setulae in ca. 14–16 irregular rows ( Fig. 8N View FIGURE 8 ). Katepisternum and mesopleuron mostly yellow to dark yellow ( Fig. 8O View FIGURE 8 ). Wing ( Fig. 4E View FIGURE 4 ): mostly clouded; costal vein between R 2+3 and R 4+5 distally with ca. 5–7 peg-like spinules on ventral surface; R 4+5 and M 1 slightly convergent distally; halter mostly yellow, with a dark yellow to dark brown patch at knob ( Fig. 8O View FIGURE 8 ). Abdominal tergites dark brown to black, 2nd tergite usually yellow medially and laterally, 3rd tergite usually yellow anteriorly and laterally, entirely setigerous even in the “shortened” specimens ( Figs. 11J–L View FIGURE 11 , 12A, B View FIGURE 12 ), 4th tergite usually yellow anteriorly ( Figs. 11J–L View FIGURE 11 , 12A–D View FIGURE 12 ). Male terminalia: Cercus lacking pubescence ( Fig. 36A View FIGURE 36 ). Paramere narrow apically, with ca. 7 sensilla distally ( Fig. 36C View FIGURE 36 ).

Measurements and indices. BL = 4.13 mm in holotype (range in 5♂ and 5♀ paratrpes: 3.82–4.18 in ♂, 3.13– 3.53 in ♀), ThL = 2.11 mm (1.87–2.09 in ♂, 1.60–1.70 in ♀), WL = 3.59 mm (3.19–3.49 in ♂, 2.67–2.83 in ♀), WW = 1.59 mm (1.43–1.61 in ♂, 1.20–1.37 in ♀), arb = 6–7/4 (6–7/3–4), avd = 1.05 (0.84–1.10), adf = 2.45 (1.89– 2.73), flw = 2.31 (1.87–2.73), FW/HW = 0.24 (0.22–0.34), ch/o = 0.06 (0.03–0.06), prorb = 0.62 (0.60–0.81), rcorb = 0.67 (0.70–0.90), vb = 0.60 (0.44–0.70), dcl = damaged (0.38–0.60), presctl = 0.59 (0.42–0.58), sctl = damaged (1.16–1.25), sterno = damaged (0.59–0.83), orbito = 1.07 (1.16–1.78), dcp = 0.24 (0.23–0.38), sctlp = 1.16 (1.01– 1.33), C = 2.14 (1.78–2.16), 4c = 1.24 (1.14–1.32), 4v = 1.77 (1.51–1.84), 5x = 0.91 (0.85–1.28), ac = 2.66 (2.63– 3.49), M = 0.42 (0.39–0.58), C3F = 0.75 (0.71–0.83).

Type specimens. Holotype ♂ ( SCAU, No. 128737), CHINA: Muyiji Park, Ximeng , Yunnan, 22°37'N, 99°36'E, alt. 1103m, 4.iv.2011, ex tussock, JM Lu GoogleMaps . Paratypes: CHINA: 16♂, 7♀ ( SCAU, 128680–96, 128738–42), 1103–1203m, 1–4.iv.2011, 11.viii.2016, JM Lu, YR Su, YQ Liu, other data same as holotype GoogleMaps ; 1♂ ( SCAU, No. 128743), Jianfengling, Ledong , Hainan, 18˚41'N, 108˚52'E, alt. 220m, 1.xii.2004, ex tussock, HW Chen ; 2♂ ( SCAU, Nos 128697, 98), Xincheng, Yingjiang , Yunnan, 24°47'N, 98°11'E, alt. 963m, 18.viii.2016, ex tussock, L Gong GoogleMaps ; 1♂ ( SCAU, No. 128508), Husa, Longchuan , Yunnan, 24°28'N, 97°45'E, alt. 1227m, 21.viii.2016, ex tussock, L Gong GoogleMaps ; 4♂ ( SCAU, Nos 128669, 128670, 128671, 128673), Botanical Garden, Ruili , Yunnan, 24°01'N, 97°52'E, alt. 1174m, 22.viii.2016, ex tree trunks, YQ Liu GoogleMaps ; 1♂ ( SCAU, No. 128699), Zhengxing, Jinggu , Yunnan, 23°20'N, 100°58'E, alt. 1100m, 23.vii.2009, ex tussock, L Wang GoogleMaps ; 1♂ ( SCAU, No. 128674), Mengka, Ximeng , Yunnan, 22°44'N, 99°27'E, alt. 2000m, 3.iv.2011, ex tussock, JM Lu GoogleMaps ; 3♂, 2♀ ( SCAU, Nos 128675–79), Hesong, Menghai , Yunnan, 21°50'N, 100°06'E, alt. 1700m, 2, 11.iv.2011, ex tussocks, ZF Shao, SJ Yan GoogleMaps ; 2♂, 2♀ ( SCAU, Nos 128700–03), Menglun, Mengla , Yunnan, 21°41'N, 101°25'E, alt. 800–900m, 12.viii.2002, 19.iv.2007, ex tussocks, HW Chen GoogleMaps ; 6♂ ( SCAU, Nos 128704–09), Guanlei, Mengla , Yunnan, 21°38'N, 101°10'E, alt. 562m, 20.iv.2016, ex tree trunks, J Huang, YQ Liu, YL Wang, L Zhu GoogleMaps ; 2♂, 2♀ ( SCAU, Nos 128710–13), Wangtianshu, Mengla , Yunnan, 21°28'N, 101°38'E, alt. 570–600m, 30.ix.2011, 10.v.2012, 12.xi.2012, ex tussocks, HW Chen, JJ Gao GoogleMaps .