Scaptodrosophila melanogaster, 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 : 95

Scaptodrosophila melanogaster sp. n.

Figs 5A-D , 12

Type material.

Holotype ♂ (SCAU, No. 128297): CHINA: Baihualing, Baoshan, Yunnan, 25°17'N, 98°48'E, alt. 1400 m, 7.vi.2011, HW Chen. Paratypes: CHINA: 6♂, 10♀ (SCAU, Nos 128298-313), HW Chen, JJ Gao, same data as holotype; 2♂, 1♀ (SCAU, Nos 128314-15, 128373), Hesong, Menghai, Yunnan, 21°50'N, 100°05'E, alt. 1940 m, 16.iv.2010, 6.v.2012, HW Chen, JM Lu; 1♂ (SCAU, No. 128317), Menglun, Mengla, Yunnan, alt. 570 m, 3, 4.xi.2001, HW Chen.

Diagnosis.

This species is similar to S. rhina sp. n. in the male terminalia, but can be distinguished from the latter by having the paramere expanded and not divided distally in lateral view (Fig. 12D ), the aedeagus distally protruded ventrally in lateral view (Fig. 12D ), the mesonotum yellowish brown, with four brown longitudinal stripes sublaterally (Fig. 5B ); see under that species.

Description.

Male and female: Head (Fig. 5A ): frons yellowish brown with a brown band anteriorly. Pedicel yellowish brown; first flagellomere yellowish. Facial carina yellowish, short, as 1/3 length as face.

Thorax (Fig. 5B, C ): acrostichal setulae in ca. 8-10 irregular rows. Scutellum yellowish brown, dark brown near basal scutellar setae, pale at tip. Pleura dark brown.

Abdomen (Fig. 5D ): tergites II to V brown with dark brown caudal bands, the caudal band on tergite II interrupted medially; tergite VI brown.

Male terminalia (Fig. 12A-D ): epandrium with ca. 16 setae near posterior and ventral margins per side. Surstylus with 6-7 peg-like prensisetae. Hypandrium with a pair of paramedian setae, lacking pubescence. Paramere with six sensilla subbasally and pubescence distally. Aedeagus lacking pubescence.

Female terminalia (Fig. 12E ): oviscapt with one subapical trichoid ovisensillum, 17, 12 and 5 peg-like ovisensilla per side on ventral, dorsal and apical margins, respectively.

Measurements [holotype (paratypes range in 4♂, 5♀), in mm]: BL = 3.60 (3.20-3.47, 3.33-3.78), ThL = 1.64 (1.42-1.64, 1.42-1.78), WL = 3.42 (3.02-3.33, 3.11-3.64), WW = 1.38 (1.20-1.38, 1.24-1.42).

Indices: arb = 4/3 (4/3), avd = 1.06 (0.83-1.11), adf = 2.57 (3.17-3.83), flw = 1.57 (1.57-2.00), FW/HW = 0.43 (0.38-0.45), ch/o = 0.12 (0.08-0.15), prorb = damaged (0.52-0.63), rcorb = damaged (0.25-0.29), vb = 1.20 (0.86-1.20), dcl = damaged (0.68-0.76), presctl = damaged (0.39-0.46), sctl = damaged (0.97-1.07), sterno = 1.23 (0.70-1.22), orbito = 0.56 (0.50-0.60), dcp = 0.56 (0.46-0.55), sctlp = 0.88 (0.88-1.00), C = 2.28 (1.94-2.16), 4c = 1.02 (0.98-1.24), 4v = 2.02 (1.85-2.32), 5x = 1.33 (1.29-1.73), ac = 2.30 (2.35-2.72), M = 0.53 (0.49-0.68), C3F = 0.91 (0.88-0.98).

Etymology.

A combination of the Greek words: " melas " (= black) + " gaster " (= abdomen), referring to the abdomen nearly black.

Distribution.

China (Yunnan).

Figures

Figure 5. Head, mesonotum, scutellum, pleura and abdomen of male. A-D S. melanogaster sp. n. E-H S. nigricostata sp. n. Scale bars 1 mm.

Figure 12. Scaptodrosophila melanogaster 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) E oviscapt (lateral view). Scale bars 0.1 mm.