Ten new species of the Stegana (Steganina) shirozui species group (Diptera, Drosophilidae) from China Author Chen, Xi-Peng Author Chen, Hong-Wei text Zootaxa 2012 3333 24 37 journal article 10.5281/zenodo.215439 f63d615a-0fba-4117-9c9e-d221666c9212 1175-5326 215439 Stegana ( Steganina ) oligochaeta sp. nov. ( Figs 28–34 ) Diagnosis. This species is related to S . protuberans sp. nov. , but clearly distinguishable from the latter by the epandrium and aedeagus (in S . protuberans : epandrium not broadened on posterior margins, approximately twice as high as wide; aedeagus lacking sclerotized, round, minute processes basoventrally). Description. Male terminalia: Epandrium broadened on posterior margins, approximately 3/5 as high as wide, protruded ventrally ( Fig. 28 ). Cercus with sporadic pubescence ( Fig. 28 ). Surstylus with 8 prensisetae submedially ( Fig. 29 ). Tenth sternite sclerotized and deeply separated basally, protruded apically ( Fig. 30 ). Paramere with ca. 2 sensilla ( Figs 31, 32 ). Aedeagus with scalelike, minute processes dorsally and several sclerotized, round, minute processes basoventrally, slightly semilunar on opening in ventral view ( Figs 31, 32 ). Dorsomedial projection of gonopods with serrated, minute processes distally ( Fig. 34 ). FIGURES 28–34. Stegana ( Steganina ) oligochaeta sp. nov. , male terminalia: 28. Epandrium, cercus and surstylus; 29. surstylus; 30. 10th sternite; 31, 32. hypandrium, aedeagus and aedeagal apodeme; 33, 34. gonopods. Scale bars: 0.1 mm. Measurements. BL = 2.78 mm in holotype (13 paratype 2.89 mm ), ThL = 1.40 mm ( 1.36 mm ), WL = 2.94 mm ( 3.09 mm ), WW = 1.26 mm ( 1.38 mm ), arb = 9/6 (9/5), avd = 0.80 (0.91), adf = 1.43 (1.38), flw = 1.86 (1.63), FW/HW = 0.48 (0.49), ch/o = 0.21 (0.24), prorb = damaged (damaged), rcorb = 0.85 (damaged), vb = 0.33 (0.40), dcl = 0.48 (0.48), presctl = 0.44 (0.45), sctl = damaged (damaged), sterno = 0.88 (0.86), orbito = 2.00 (2.25), dcp = 0.19 (0.17), sctlp = 1.78 (1.90), C = 1.97 (2.00), 4c = 1.17 (1.06), 4v = 1.90 (1.76), 5x = 1.45 (1.33), ac = 11.67 (12.00), M = 0.53 (0.47), C3F = 0.68 (0.66). Type material. Holotype 3 ( SCAU , No. 120768 ), CHINA : Mt. Jizu, Binchuan, Yunnan, 1900 m , 23.vii.2006 , HL Cao. Paratype : CHINA : 13 ( SCAU , No. 120769 ), Mt. Wuliang, Nanjian, Yunnan, 25.vii.2006 , HL Cao. Distribution. China (Yunnan). Etymology. A combination of the Greek words: oligos (= few) and chaite (= bristle, seta), referring to the cercus with sporadic pubescence.