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 serrateifoliacea sp. nov. Figs 5A, C, E , 11 Material examined. Holotype . China : ♂ (SCAU, No. 126826), Hesong , Menghai , Yunnan , 21°49'N , 100°06'E , alt. 1900 m , 11.iv. 2011 , JM Lu , YR Su , ZF Shao , SJ Yan . Paratypes . China : 1♂ (SCAU, No. 126827), Hesong , Menghai , Yunnan , 21°50'N , 100°06'E , alt. 1900 m , 11.iv.2011 , JM Lu , YR Su , ZF Shao , SJ Yan . 1♂ (SCAU, No. 110929), Mengdong , Cangyuan , Yunnan , 23°10'N , 99°13'E , alt. 1323 m , 6.v.2016 , YQ Liu . Diagnosis. Paramere quadrangle-shaped in lateral view, with ca 3 sensillae medially (Fig. 11C, D ); gonopods developed, arm-shaped, with many finely acanthoid processes (Fig. 11C, D ); aedeagus beanpod-shaped in lateral view (Fig. 11C, D ). Description. (♂, ♀) Head (Fig. 5A ): Frons yellowish brown. Pedicel yellow. First flagellomere yellowish. Facial carina yellowish, short, 1/2 length as face. Thorax (Fig. 5C, E ): Mesonotum and scutellum dark brown. Acrostichal setulae in ca 8 irregular rows. Halter yellowish brown. Wings hazel. Abdomen (Fig. 5C, E ): First tergite and second tergite yellow. Third to sixth tergites brown. Male terminalia : Epandrium with ca 19 setae near posterior margin and ventral corner on each side (Fig. 11A, B ). Surstylus broad, with ca 10 fine peg-like prensisetae on caudal margin, and numerous setae on outer and inner surfaces (Fig. 11A, B ). Hypandrium pubescent near paramedian setae (Fig. 11C, D ). Female terminalia (Fig. 11E ): Oviscapt with 1 long subapical trichoid ovisensillum on ventral margins and densely covered with peg-like ovisensilla. Measurements [holotype ♂ (range in 1♂, 1♀), in mm]: BL = 1.93 (2.22, 1.80), ThL = 0.93 (0.889, 1.00), WL = 2.13 (2.44, 2.13), WW = 0.87 (0.978, 0.93). Indices : arb = 2/1 (2/1), avd = 0.67 (0.67-0.73), adf = 1.00 (1.09-1.50), flw = 1.33 (1.59-2.50), FW/HW = 0.45 (0.344-0.48), ch/o = 0.15 (0.11-0.13), prorb = 1.00 (0.71-1.40), rcorb = 0.40 (0.20-0.43), vb = 0.50 (0.59-0.67), dcl =0.50 (0.59-0.64), presctl = 0.33 (0.36-0.37), sctl = 0.92 (1.22-1.08), sterno = 0.50 (0.33-0.45), orbito = 0.67 (0.65-0.67), dcp = 0.44 (0.42-0.44), sctlp = 0.83 (1.20-1.25), C = 2.92 (2.93-4.30), 4c = 0.81 (0.55-0.82), 4v = 1.88 (1.66-1.76), 5x = 1.75 (0.94-1.33), ac = 2.60 (1.59-2.33), M = 0.44 (0.34-0.47), C3F = 0.38 (0.50-0.60). Etymology. A combination of the Latin words " serratus " (= serrated) + " foliaceus " (= folium), referring to the gonopods with numerous finely serrated processes. Distribution. China (Yunnan). Figure 5. Head, mesonotum, scutellum, pleura and abdomen of male. A, C, E S. serrateifoliacea sp. nov. B, D, F S. sinuata sp. nov. Scale bars: 0.5 mm.