The genus Scaptodrosophila Duda (Diptera, Drosophilidae), part III: the riverata species group from China, with morphological and molecular evidence for five new species Author Lin, Yong Department of Entomology, South China Agricultural University, Tianhe, Guangzhou, 510642, China Author Chen, Hong-Wei Department of Entomology, South China Agricultural University, Tianhe, Guangzhou, 510642, China hongweic@scau.edu.cn text ZooKeys 2020 2020-06-01 937 139 162 http://dx.doi.org/10.3897/zookeys.937.49794 journal article http://dx.doi.org/10.3897/zookeys.937.49794 1313-2970-937-139 3772774D69064106839696CF4581D79A 62955966DCED51C6A867C93553F66A39 3886047 Scaptodrosophila sinuata sp. nov. Figs 5B, D, F , 12 Material examined. Holotype . China : ♂ (SCAU, No. 110939), Laobiangou , Benxi , Liaoning , 41°04'N , 124°30'E , alt. 575 m , 21.vi.2018 , Y Lin . Paratypes . China : 2♂ (SCAU, Nos 110936, 37), Dayangcha , Kuangdian , Liaoning , 41°01'N , 124°37'E . alt. 485 m , 23.vi.2018 , L Gong ; 2♂ (SCAU, Nos 110938, 40), Laobiangou , Benxi , Liaoning , 41°04'N , 124°30'E , alt. 575 m , 21.vi.2018 , Y Lin ; 3♂ (SCAU, Nos 110941, 42, 43), Guojiapuzi , Kuangdian , Liaoning , 40°46'N , 124°45'E . alt. 342 m , 26.vi.2018 , L Gong . Diagnosis. Paramere quadrangle-shaped in lateral view, with ca 3 sensillae medially (Fig. 12A, B ); gonopods large, with many finely acanthoid processes (Fig. 12C, D ); aedeagus beanpod-shaped in lateral view (Fig. 12C, D ). Description. (♂) Head (Fig. 5B ): Frons yellowish brown. Pedicel yellow. First flagellomere yellowish brown. Arista weak. Facial carina yellowish, developed, 1/2 length as face. Thorax (Fig. 5D, F ): Mesonotum and scutellum yellowish. Acrostichal setulae in ca 8 irregular rows. Halter yellowish brown. Wings light brown and appreciably hyaline. Abdomen (Fig. 5D, F ): Tergites yellowish. Male terminalia (Fig. 12 ): Epandrium with ca 23 setae near posterior margin and ventral corner on each side (Fig. 12A, B ). Surstylus broad, with ca 12 fine peg-like prensisetae on caudal margin, and numerous setae on outer and inner surface (Fig. 12A, B ). Hypandrium pubescent near paramedian setae (Fig. 12C, D ). Measurements [holotype ♂ (range in 3♂), in mm]: BL = 2.36 (2.33-2.44), ThL = 0.978 (1.02-1.07), WL = 2.33 (2.07-2.30), WW = 0.99 (0.99-1.02). Indices : arb = 2/1 (2/1), avd = 0.88 (0.67-0.88), adf = 0.97 (0.97-0.99), flw = 1.56 (1.51-1.62), FW/HW = 0.36 (0.35-0.37), ch/o = 0.12(0.11-0.13), prorb = 0.82 (0.95-0.98), rcorb = 0.50 (0.50-0.52), vb = 0.73 (0.47 -0.52), dcl =0.57 (0.71-0.72), presctl = 0.36 (0.42-0.44), sctl = 1.873 (1.62-1.72), sterno = 0.43 (0.41-0.43), orbito = 0.48 (0.48-1.07), dcp = 0.41 (0.40-0.42), sctlp = 0.77 (0.76-0.82), C = 3.79 (3.76-4.09), 4c = 0.59 (0.53-0.60), 4v =1.69 (1.72-1.80), 5x = 0.86 (0.86-0.95), ac =1.36 (1.35-1.71), M = 0.31 (0.29-0.32), C3F = 0.60 (0.56-0.58). Etymology. From the Latin word: " sinuatus ", referring to the paramere, which is curved subbasally. Distribution. China (Liaoning).