Leucophenga forcipula 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 : 46-48

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.5305167
persistent identifier	https://treatment.plazi.org/id/03EE8C66-FFC0-FFBF-DE81-23EBCB09FC7B
treatment provided by	Felipe
scientific name	Leucophenga forcipula Huang & Chen
status	sp. nov.

Treatment

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

( Figs. 3E View FIGURE 3 , 7D–F View FIGURE 7 , 10G, 10H View FIGURE 10 , 15C, 15D View FIGURE 15 , 28 View FIGURE 28 )

Diagnosis. This species is most similar to L. hyaloptera sp. nov. in having the pleura with a brown, longitudinal stripe above ( Figs. 7F View FIGURE 7 , 8C View FIGURE 8 ), the wing entirely hyaline ( Figs. 3E View FIGURE 3 , 4A View FIGURE 4 ), the colour patterns of abdominal tergites in females ( Figs. 10H View FIGURE 10 , 11E View FIGURE 11 ), and the shape and pubescence of epandrium, cercus, and surstylus ( Figs. 28A View FIGURE 28 , 32A View FIGURE 32 ), but can be distinguished from the latter in having the aedeagus laterally with a long, distally narrow, apically acute process, which bearing a sensillum at tip ( Fig. 28D View FIGURE 28 ); see below that species.

Description. Ocellar triangle brownish yellow to brown, with ca. 2 setae above ocellar setae. Frons brownish yellow ( Fig. 7D View FIGURE 7 ). Pedicel dark yellow; first flagellomere yellow ( Fig. 7D View FIGURE 7 ). Clypeus entirely brownish yellow. Palpus yellow ( Fig. 7D View FIGURE 7 ). Mesonotum mostly brownish yellow ( Fig. 7E View FIGURE 7 ). Postpronotal lobe yellow ( Fig. 7F View FIGURE 7 ). Acrostichal setulae in ca. 12–14 irregular rows ( Fig. 7E View FIGURE 7 ). Scutellum brownish yellow to brownish, dark brown laterally, yellow at tip ( Fig. 7E View FIGURE 7 ). Katepisternum and mesopleuron mostly yellow ( Fig. 7F View FIGURE 7 ). Wing ( Fig. 3E View FIGURE 3 ): Costal vein between R 2+3 and R 4+5 distally with ca. 4 or 5 peg-like spinules on ventral surface; R 4+5 and M 1 nearly parallel distally; halter mostly yellowish, with a brown to dark brown patch at knob ( Fig. 7E View FIGURE 7 ). Abdominal tergites dark brown to black, 2nd tergite yellow medially and laterally, 3rd tergite mostly yellowish except for lateral region, only setigerous laterally, 5th tergite with yellow patches submedially and sublaterally in males ( Fig. 10G View FIGURE 10 ); 3rd to 5th tergites with yellow patches submedially and sublaterally in females ( Fig. 10H View FIGURE 10 ). Male terminalia: Epandrium with ca. 6 setae near posterior and ventral margins per side ( Fig. 28A View FIGURE 28 ). Hypandrium with 2 sensilla ( Fig. 28B View FIGURE 28 ). Paramere slender, narrow basally and rounded apically, with ca. 6 sensilla distally ( Fig. 28C View FIGURE 28 ). Aedeagus rounded apically ( Fig. 28D View FIGURE 28 ).

Measurements and indices. BL = 2.93 mm in holotype (range in 2♀ paratypes: 3.00–3.20), ThL = 1.43 mm (1.47–1.53), WL = 2.60 mm (2.65–2.73), WW = 1.20 mm (1.20–1.23), arb = 7/3 (8/3), avd = 0.81 (0.80–0.83), adf = 2.13 (1.88–2.00), flw = 2.07 (1.63–1.87), FW/HW = 0.34 (0.33–0.36), ch/o = 0.04 (0.05), prorb = 0.076 (0.73– 0.74), rcorb = 0.72 (0.69–0.70), vb = 0.39 (0.38), dcl = 0.38 (damaged and 0.47), presctl = 0.48 (damaged and 0.50), sctl = 1.19 (damaged and 1.35), sterno = 0.75 (damaged and 0.78), orbito = 1.75 (1.82–2.00), dcp = 0.21 (0.21–0.22), sctlp = 0.91 (0.97–1.00), C = 2.35 (2.14–2.19), 4c = 1.21 (1.23–1.24), 4v = 2.12 (1.97–2.06), 5x = 1.50 (1.29–1.31), ac = 2.35 (2.05–2.33), M = 0.73 (0.62–0.63), C3F = 0.73 (0.76–0.77).

Type specimens. Holotype ♂ ( SCAU, No. 128580), CHINA: Menglun, Mengla , Yunnan, 21°41'N, 101°25'E, alt. 900m, 28.ix.2011, ex tussock, HW Chen GoogleMaps . Paratypes: CHINA: 2♀ ( SCAU, Nos 128581, 82), 780m, 17.iv.2007, other data same as holotype GoogleMaps .

Distribution. China (Yunnan).

Etymology. From the Latin word “ forceps ” (= forcipate), referring to the shape of the process on aedeagus in lateral view.