Scaptodrosophila fusciventricula, Liu & Chen, 2018

Liu, Yi-Qin & Chen, Hong-Wei, 2018, The genus Scaptodrosophila Duda part II: the coracina species group from East Asia, with morphological and molecular evidence (Diptera, Drosophilidae), ZooKeys 736, pp. 119-148 : 127

Scaptodrosophila fusciventricula sp. n.

Figs 4B, D, F , 10

Holotype.

♂ (SCAU, No. 110987): CHINA: Menglun, Mengla, Yunnan, 21°55'N, 101°16'E, alt. 680 m, 11.iv.2011, L Wang.

Paratype.

CHINA: 1♂ (SCAU, No. 110988), same data as holotype.

Diagnosis.

Paramere dolabriform in lateral view, with pubescence apically (Fig. 10C, D ); aedeagus very broad and finely curved apically in lateral view (Fig. 10D ).

Description.

(♂) Head (Fig. 4B ): Frons yellowish brown. Pedicel yellowish brown; first flagellomere yellowish, margins black. Facial carina yellowish, short, narrow, and flat, 1/4 long as face.

Thorax (Fig. 4D, F ): Mesonotum yellowish brown. Acrostichal setulae in ca. ten regular rows. Scutellum yellowish brown. Pleura yellowish brown.

Abdomen (Fig. 4 D, F ): All tergites brown.

Male terminalia (Fig. 10 ): Epandrium with ca. 17 setae near posterior and ventral margins per side. Surstylus with ca. nine peg-like prensisetae. Hypandrium with pubescence basomedially. Paramere with seven medial sensilla. Gonopods V-shaped in lateral view. Aedeagus lacking pubescence.

Measurements [holotype ♂ (range in 1♂ paratype), in mm]: BL = 2.33 (2.33), ThL = 1.07 (1.07), WL = 2.43 (2.33), WW = 1.06 (1.00).

Indices: arb = 4/2 (3-4/2), avd = 0.89 (0.88), adf = 3.00 (2.67), flw = 2.67 (2.33), FW/HW = 0.46 (0.43), ch/o = 0.08 (0.09), prorb = 0.89 (0.88), rcorb = 0.44 (0.38), vb = 0.29 (0.40), dcl = 0.50 (0.41), presctl = 0.50 (0.41), sctl = 0.85 (1.00), sterno = 0.50 (damaged), orbito = 0.60 (0.40), dcp = 0.38 (0.33), sctlp = 0.90 (1.00), C = 4.17 (3.92), 4c = 0.60 (0.63), 4v = 1.60 (1.63), 5x = 1.14 (1.50), ac = 1.50 (2.00), M = 0.40 (0.47), C3F = 0.33 (0.25).

Etymology.

A combination of the Latin words fuscus and ventriculus, referring to the brown tergites.

Distribution.

China (Yunnan).

Figures

Figure 4. Frontal, dorsal, and lateral views of male. Scaptodrosophila fuscilimba sp. n. (A, C, E); S. fusciventricula sp. n. (B, D, F). Scale bars: 0.5 mm.

Figure 10. Scaptodrosophila fusciventricula sp. n. A and B epandrium, surstylus, and cercus (posterior and lateral views) C and D hypandrium, parameres, gonopods, aedeagus, and aedeagal apodeme (ventral and lateral views, respectively). Scale bars: 0.1 mm.