Stegana (Steganina) protuberans, Chen, Xi-Peng & Chen, Hong-Wei, 2012

Chen, Xi-Peng & Chen, Hong-Wei, 2012, Ten new species of the Stegana (Steganina) shirozui species group (Diptera, Drosophilidae) from China, Zootaxa 3333, pp. 24-37 : 32-33

Stegana (Steganina) protuberans sp. nov.

( Figs 51–57 )

Description. Male terminalia: Epandrium strongly protruded ventrally, not broadened on posterior margins, approximately twice as high as wide ( Fig. 51 ). Cercus with sparse pubescence ( Fig. 51 ). Surstylus with 8 prensisetae submedially ( Fig. 52 ). Tenth sternite sclerotized and deeply separated basally, protruded apically ( Fig. 53 ). Paramere with ca. 3 sensilla ( Figs 54, 55 ). Aedeagus with scalelike, minute processes dorsally, slightly semilunar on opening in ventral view ( Figs 54, 55 ). Dorsomedial projection of gonopods with serrated, minute processes distally ( Fig. 57 ).

Measurements. BL = 2.75 mm in holotype (range in 3Ƥ paratypes: 2.22–2.80 mm), ThL = 1.40 mm (1.70– 1.84 mm), WL = 2.84 mm (3.55–3.95 mm), WW = 1.24 mm (1.48–1.54 mm), arb = 7/5 (7/5–9/5), avd = 0.82 (0.75–0.87), adf = 1.57 (1.50–1.50), flw = 1.71 (1.63–1.75), FW/HW = 0.48 (0.46–0.48), ch/o = 0.27 (0.21–0.28), prorb = 1.25 (1.25–1.26), rcorb = 0.75 (0.67–0.73), vb = 0.36 (0.40–0.47), dcl = 0.47 (0.46–0.49), presctl = damaged (0.54–0.59), sctl = 1.39 (1.40), sterno = 0.80 (0.83–1.00), orbito = 2.00 (1.80–2.00), dcp = 0.21 (0.18– 0.22), sctlp = 1.70 (1.69–2.00), C = 2.00 (1.98–2.23), 4c = 1.17 (1.00–1.07), 4v = 1.57 (1.70–1.80), 5x = 1.45 (1.20–1.38), ac = 11.67 (11.00–13.00), M = 0.53 (0.45–0.47), C3F = 0.57 (0.64–0.69).

Type material. Holotype 3 ( SCAU, No. 120778, CHINA: Mt. Wulian, Nanjian, Yunnan, 2200 m, 25– 27.vii.2006, HL Cao. Paratypes: CHINA: 3Ƥ ( SCAU, Nos 120779 -81), same data as holotype.

Distribution. China (Yunnan).

Etymology. From the Latin word: protuberans (= protruding), referring to the gonopods with 1 projection dorsomedially.

Figures

FIGURES 51 – 57. Stegana (Steganina) protuberans sp. nov., male terminalia: 51. Epandrium, cercus and surstylus; 52. surstylus; 53. 10 th sternite; 54, 55. hypandrium, aedeagus and aedeagal apodeme; 56, 57. gonopods. Scale bars: 0.1 mm.