Scaptodrosophila coracina (Kikkawa & Peng, 1938)

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 : 123-124

Scaptodrosophila coracina (Kikkawa & Peng, 1938)

Figs 3 , 8

Drosophila coracina Kikkawa & Peng, 1938: 523.

Material examined.

CHINA: 11♂, 5♀ (SCAU, Nos 111031-46), Mayanghe, Yanhe , Guizhou, 28°39'N, 108°16'E, alt. 422-1500 m, 24-25.v.2012, JM Lu ; 10♂, 8♀ (SCAU, Nos 111047-64), Jiaoye Park, Kunming , Yunnan, 25°02'N, 102°37'E, alt. 1900 m, 17.vii.2004, JJ Gao ; 3♂, 2♀ (SCAU, Nos 111026-30), Samage, Weixi , Yunnan, 27°22'N, 99°51'E, alt. 1900 m, 30.vii.2004, HW Chen . JAPAN: 5♂, 3♀ (SCAU, Nos 111019-25), Iriomote , Okinawa, 24°32'N, 123°88'E, alt. 150 m, 12.v.2001, HW Chen .

Diagnosis.

Paramere large, pubescent completely (Fig. 8C, D ); aedeagus short, rod-like, apically membranous, fan-like (Fig. 8C, D ).

Description.

(♂, ♀) Head (Fig. 3A, B ): Frons yellowish brown to dark brown. Pedicel and first flagellomere brown to dark brown. Facial carina brown to dark brown, 1/3 as long as face.

Thorax (Fig. 3C-F ): Mesonotum brown or black. Acrostichal setulae in ca. eight to ten irregular rows. Scutellum brown or black. Pleura brownish or dark brown.

Abdomen (Fig. 3C-F ): All tergites brown or dark brown.

Male terminalia (Fig. 8A-D ): Epandrium with ca. 19 setae along dorsocaudal margin and on ventral portion per side. Surstylus with ca. 12 peg-like prensisetae. Hypandrium pubescent caudolaterally. Paramere with ca. six to eight sensilla. Gonopods apically round in lateral view. Aedeagus lacking pubescence.

Female terminalia (Fig. 8E ): Oviscapt triangle-shaped subapically, with one subterminal, trichoid ovisensillum, 14 ovisensilla.

Measurements (range in 4♂, 4♀, in mm): BL = (1.76-2.33, 2.00-2.40), ThL = (0.83-0.93, 0.86-1.00), WL = (1.50-1.83, 1.50-2.00), WW = (0.67-0.87, 0.70-1.00).

Indices: arb = 3/2, avd = 0.71-1.00, adf = 1.67-2.33, flw = 1.50-2.00, FW/HW = 0.36-0.43, ch/o = 0.09-0.11, prorb = 0.70-0.88, rcorb = 0.50-0.60, vb = 0.33-0.57, dcl = 0.48-0.69, presctl = 0.31-0.50, sctl = 0.89-1.00, sterno = 0.60-0.83, orbito = 0.60-0.80, dcp = 0.36-0.53, sctlp = 0.83-1.00, C = 1.53-2.00, 4c = 1.38-1.56, 4v = 2.25-2.56, 5x = 1.75-2.33, ac = 2.60-3.00, M = 0.75-0.89, C3F = 0.76-0.83.

Distribution.

Widespread in Asia.

Figures

Figure 3. Frontal, dorsal, and lateral views of male. Scaptodrosophila coracina from Okinawa, Japan (A, C, E) and Guizhou, China (B, D, F). Scale bars: 0.5 mm.

Figure 8. Scaptodrosophila coracina (Kikkawa & Peng, 1938). A and B epandrium (epand), surstylus (sur), and cercus (cerc) (posterior and lateral views, respectively) C and D hypandrium (hypd), parameres (pm), gonopods (gon), aedeagus (aed), and aedeagal apodeme (aed a) (ventral and lateral views, respectively) E oviscapt (lateral view). Scale bars: 0.1 mm.