Scaptodrosophila fuscilimba, 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 : 124-126

Scaptodrosophila fuscilimba sp. n.

Figs 4A, C, E , 9

Holotype.

♂ (SCAU, No. 110975): CHINA: Mengdong, Cangyuan, Yunnan, 23°10'N, 99°13'E, alt. 1323 m, 6.v.2016, YL Wang.

Paratypes.

CHINA: 3♂, 5♀ (SCAU, Nos 110976-983), same data as holotype, J Huang, YQ Liu, YL Wang, L Zhu.

Diagnosis.

Paramere strongly curved in lateral view (Fig. 9D ); aedeagus inverted, triangle shaped, tapering dorsally in lateral view (Fig. 9D ).

Description.

(♂, ♀) Head (Fig. 4A ): Frons brownish. Pedicel brown to dark brown; first flagellomere yellowish, margins black. Facial carina yellowish, long, and narrow, 1/2 as long as face.

Thorax (Fig. 4C, E ): Mesonotum yellowish brown. Acrostichal setulae in ca. eight regular rows. Scutellum yellowish brown. Pleura yellowish brown.

Abdomen (Fig. 4C, E ): Tergites II to V yellow with dark brown caudal bands; tergites VI yellow.

Male terminalia (Fig. 9A-D ): Epandrium with ca. 16 setae near posterior and ventral margins per side. Surstylus with ca. nine peg-like prensisetae. Hypandrium lacking pubescence. Paramere with three medial and four basal sensilla. Gonopods roundly expanded in lateral view. Aedeagus lacking pubescence.

Female terminalia (Fig. 9E ): Oviscapt triangle-shaped subapically, with six long subterminal trichoid ovisensilla, and 12 peg-like ovisensilla along ventral margin.

Measurements [holotype ♂ (range in 3♂, 2♀ paratypes), in mm]: BL = 1.87 (1.70-2.13, 1.83-2.03), ThL = 0.80 (0.77-0.90, 0.83-0.90), WL = 1.63 (1.50-1.90, 1.73-1.83), WW = 0.70 (0.67-0.80, 0.70-0.77).

Indices: arb = 3/2 (3/2), avd = 0.83 (0.67-0.80), adf = 2.00 (1.67-2.33), flw = 1.67 (1.67-1.83), FW/HW = 0.48 (0.48-0.52), ch/o = 0.13 (0.11-0.13), prorb = 0.86 (0.75-0.93), rcorb = 0.29 (0.29-0.38), vb = 0.40 (0.38-0.46), dcl = 0.38 (0.29-0.42), presctl = 0.25 (0.32-0.43), sctl = 1.07 (0.86-1.17), sterno = 0.57 (0.36-0.45), orbito = 0.38 (0.38-0.50), dcp = 0.30 (0.32-0.40), sctlp = 086 (0.86-1.08), C = 1.87 (1.65-2.00), 4c = 1.36 (1.25-1.42), 4v =2.36 (2.33-2.50), 5x = 2.00 (2.25-2.50), ac = 3.00 (2.73-3.40), M = 0.73 (0.75-0.90), C3F = 0.67 (0.67-0.80).

Etymology.

A combination of the Latin words fuscus and limbus, referring to the brown caudal margins of abdominal 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 9. Scaptodrosophila fuscilimba 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) E oviscapt (lateral view). Scale bars: 0.1 mm.