Scaptodrosophila tanyrhina, Lin & Chen, 2020

Lin, Yong & Chen, Hong-Wei, 2020, The genus Scaptodrosophila Duda (Diptera, Drosophilidae), part III: the riverata species group from China, with morphological and molecular evidence for five new species, ZooKeys 937, pp. 139-162 : 139

Scaptodrosophila tanyrhina sp. nov.

Figs 6A, B, C , 13

Material examined.

Holotype. China: ♂ (SCAU, No. 126401), Menglun, Mengla , Yunnan, 21°41'N, 101°25'E, alt. 780 m, 17.iv.2007, HW Chen, JJ Gao . Paratypes. China: 7♂, 5♀ (SCAU, Nos 126402-11, 110930-31), Menglun, Mengla , Yunnan, 21°41'N, 101°25'E, alt. 780 m, 17.iv.2007, HW Chen, JJ Gao ; 2♂, 1♀ (SCAU, Nos 110932, 33, 35), Wangtianshu, Mengla , Yunnan, 21°28'N, 101°38'E, alt. 600 m, 23.iv.2007, HW Chen ; 1♂ (SCAU, No. 110934), Guanglei, Mengla , Yunnan, 21°38'N, 101°10'E, alt. 620 m, 21.iv.2016, YQ Liu .

Diagnosis.

Paramere broadened basally, finger-like in lateral view, with ca 6 sensillae subbasally and fine setae medially (Fig. 13C, D ); gonopods undeveloped; aedeagus broadened apically, curved in lateral view (Fig. 13C, D ).

Description.

(♂, ♀) Head (Fig. 6A ): Frons yellowish brown. Pedicel yellowish brown. First flagellomere yellowish. Facial carina yellowish, short, 1/3 length as face.

Thorax (Fig. 6B, C ): Mesonotum and scutellum yellowish brown. Acrostichal setulae in ca 8 regular rows. Halter yellowish brown. Wings yellowish.

Abdomen (Fig. 6B, C ): Tergite yellowish brown. Sternites yellowish.

Male terminalia: Epandrium with ca 13 setae near posterior margin and ventral corner on each side (Fig. 13A, B ). Surstylus small with ca 9 peg-like prensisetae on caudal margin, and ca 6 setae on outer and inner surface (Fig. 13A, B ). Hypandrium glabrous (Fig. 13C, D ).

Female terminalia (Fig. 13E ): Oviscapt with 3 long subapical trichoid ovisensilla, ca 19 peg-like ovisensilla on each side on ventral margins and 4 trichoid ovisensilla on dorsal.

Measurements [holotype ♂ (range in 5♂, 5♀), in mm]: BL = 1.87 (1.80-2.07, 1.80-2.13), ThL = 0.93 (0.93-1.00, 0.93-1.00), WL = 2.00 (2.00-2.20, 2.00-2.20), WW = 0.80 (0.80-0.87, 0.73-0.80).

Indices: arb = 2/1 (2/1), avd = 0.75 (0.60-1.00), adf = 2.00 (1.50-2.50), flw = 2.00 (1.50-2.50), FW/HW = 0.44 (0.40-0.47), ch/o = 0.10 (0.09-0.10), prorb = 1.00 (0.67-1.00), rcorb = 0.40 (0.33-0.50), vb = 0.30 (0.25 -0.50), dcl =0.70 (0.60-0.80), presctl = 0.60 (0.40-0.64), sctl = 1.18 (1.08-1.25), sterno = 0.60 (0.50-0.78), orbito = 0.80 (0.50-0.67), dcp = 0.27 (0.30-0.36), sctlp = 0.67 (0.67-1.00), C = 2.92 (2.71-3.27), 4c = 1.00 (0.85-1.18), 4v = 2.33 (2.15-2.58), 5x = 1.60 (1.33-1.80), ac = 3.00 (2.20-2.67), M = 0.67 (0.57-0.73), C3F = 0.25 (0.25-0.38).

Etymology.

A combination of the Latin words: " tanaos " + " rhinos ", referring to the developed carina.

Distribution.

China (Yunnan).

Figures

Figure 6. Head, mesonotum, scutellum, pleura and abdomen of male. A-C S. tanyrhina sp. nov. Scale bars: 0.5 mm.

Figure 13. Scaptodrosophila tanyrhina sp. nov. ♂. A Epandrium, surstylus and cercus (posterior view) B epandrium, surstylus and cercus (lateral view) C hypandrium, aedeagus, aedeagal apodeme, paramere and gonopods (ventral view) D hypandrium, aedeagus, aedeagal apodeme, paramere and gonopods (lateral view) E oviscapt (lateral view). Scale bars: 0.1 mm.