Scaptodrosophila pressobrunnea (Tsacas & Chassagnard, 1976)

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 : 91-92

Scaptodrosophila pressobrunnea (Tsacas & Chassagnard, 1976)

Figs 3E-H , 9

Drosophila pressobrunnea Tsacas & Chassagnard, 1976: 93.

Specimens examined.

CHINA: 1♂, 1♀ (SCAU, Nos 128246, 47), Nonggang, Chongzuo , Guangxi, 25°00'N, 106°51'E, alt. 230 m, 21-24.viii.2004, HW Chen .

Diagnosis.

This species is very similar to S. scutellimargo in the patterns of abdominal tergites (Fig. 3H ) and aedeagus curved dorsal (Fig. 9D ), but can be distinguished from the latter by having the paramere slightly broadened distally in lateral view (Fig. 9D ); gonopods elliptically expanded dorsally in lateral view (Fig. 9D ); see under that species.

Description.

Male and female: Head (Fig. 3E ): frons yellowish brown with a brown band anteriorly. Pedicel brownish; first flagellomere yellowish. Facial carina yellowish brown.

Thorax (Fig. 3F, G ): mesonotum yellowish brown, with a brown longitudinal stripe on 1/3 posterior. Acrostichal setulae in ca. 8-10 irregular rows. Scutellum brownish, dark brown near basal scutellar setae, pale at tip. Pleura dark brown.

Abdomen (Fig. 3H ): tergites II to V yellow, with dark brown caudal bands, the caudal band on tergite II narrowed medially; tergite VI entirely dark brown.

Male terminalia (Fig. 9A-D ): epandrium with ca. 15 setae near posterior and ventral margins per side. Surstylus with 6-7 peg-like prensisetae. Hypandrium with a pair of paramedian setae and pubescence basomedially. Paramere with 12 sensilla, and a small projection basally. Aedeagus lacking pubescence.

Female terminalia (Fig. 9E ): oviscapt with one subapical trichoid ovisensillum, 14, 8 and 5 peg-like ovisensilla per side on ventral, dorsal and apical margins, respectively.

Measurements (range in 1♂, 1♀, in mm): BL = (2.89, 2.98), ThL = (1.29, 1.16), WL = (2.62, 2.36), WW = (1.02, 0.93).

Indices: arb = 4/3, avd = 0.89-0.94, adf = 3.60, flw = 2.00, FW/HW = 0.40-0.42, ch/o = 0.08-0.09, prorb = 0.65-0.68, rcorb = 0.26-0.35, vb = 0.83-1.00, dcl = 0.59, presctl = 0.38-0.45, sctl = 0.97-1.07, sterno = 0.68-0.70, orbito = 0.44-0.50, dcp = 0.38-0.44, sctlp = 0.79-1.10, C = 1.83-1.89, 4c = 1.33-1.40, 4v = 2.41-2.52, 5x = 1.80-1.90, ac = 3.27-3.50, M = 0.70-0.72, C3F = 0.88-0.90.

Distribution.

China* (Guangxi), India, Indonesia (Sumatra).

Figures

Figure 3. Head, mesonotum, scutellum, pleura and abdomen of male. A-D S. parabrunnea E-H S. pressobrunnea. Scale bars 1 mm.

Figure 9. Scaptodrosophila pressobrunnea (Tsacas & Chassagnard, 1976). 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.