Scaptodrosophila nigripecta, Liu & Gao & Chen, 2017

Liu, Yi-Qin, Gao, Qing-Song & Chen, Hong-Wei, 2017, The genus Scaptodrosophila Duda part I: the brunnea species group from the Oriental Region, with morphological and molecular evidence (Diptera, Drosophilidae), ZooKeys 671, pp. 87-118 : 97

Scaptodrosophila nigripecta sp. n.

Figs 6A-D , 14

Type material.

Holotype ♂ (SCAU, No. 128264): CHINA: Wangtianshu, Mengla, Yunnan, 21°47'N, 101°63'E, alt. 760 m, 22.iv.2007, HW Chen. Paratypes: CHINA: 4♂ (SCAU, Nos 128265-68), Wangtianshu, Mengla, Yunnan, 21°47'N, 101°63'E, alt. 760 m, 22.iv.2007, 9.v.2012, HW Chen.

Diagnosis.

This species is similar to S. protenipenis sp. n. in the aedeagus with pubescence (Fig. 14D ), but can be distinguished from the latter by having the paramere apically divided into two triangular lobes in lateral view (Fig. 14D ); aedeagus with a cluster of pubescence on small apical part in lateral view (Fig. 14D ); see under that species.

Description.

Male and female: Head (Fig. 6A ): frons yellowish brown with a brown band anteriorly (Fig. 6A ). Pedicel brown; first flagellomere yellowish. Facial carina brown.

Thorax (Fig. 6B, C ): mesonotum brown, with two yellowish brown longitudinal stripes submedially. Acrostichal setulae in ca. 10-12 irregular rows. Scutellum brownish, dark brown near basal scutellar setae, pale at tip. Pleura dark brown.

Abdomen (Fig. 6D ): all tergites brownish with dark brown caudal bands, the caudal bands on tergites II and III narrowed medially.

Male terminalia (Fig. 14A-D ): epandrium with ca. 17 setae near posterior and ventral margins per side. Surstylus with 6-7 peg-like prensisetae. Hypandrium with a pair of paramedian setae and pubescence medially. Paramere with six sensilla medially and pubescence distally. Aedeagus slightly curved, with thinner pubescence ventrally.

Measurements [holotype (paratypes range in 4♂), in mm]: BL = 2.80 (2.58-2.76), ThL = 1.20 (1.20-1.24), WL = 2.49 (2.40-2.71), WW = 0.89 (0.93-1.02).

Indices: arb = 4/3 (4/3), avd = 0.94 (0.86-0.95), adf = 3.60 (3.40-3.80), flw = 1.60 (1.80-2.00), FW/HW = 0.43 (0.30-0.41), ch/o = 0.09 (0.07-0.12), prorb = 0.59 (0.57-0.71), rcorb = 0.27 (0.32-0.33), vb = 1.00 (1.00-1.17), dcl = damaged (0.62-0.70), presctl = damaged (0.31-0.40), sctl = damaged (0.96), sterno = damaged (1.00-1.05), orbito = 0.50 (0.50-0.63), dcp = 0.46 (0.39-0.50), sctlp = 0.92 (0.85-0.92), C = 1.77 (1.71-1.80), 4c = 1.26 (1.25-1.31), 4v = 2.17 (2.20-2.25), 5x = 2.00 (1.80-2.00), ac = 3.55 (2.71-3.75), M = 0.65 (0.64-0.70), C3F = 0.87 (0.80-0.92).

Etymology.

A combination of the Latin words: " niger " + " pectus ", referring to the black thorax.

Distribution.

China (Yunnan).

Figures

Figure 6. Head, mesonotum, scutellum, pleura and abdomen of male. A-D S. nigripecta sp. n. E-H S. obscurata sp. n. Scale bars 1 mm.

Figure 14. Scaptodrosophila nigripecta sp. n. A, B epandrium, surstylus and cercus (lateral and posterior views) C, D hypandrium, parameres, gonopods, aedeagus and aedeagal apodeme (ventral and lateral views). Scale bars 0.1 mm.