Stegana (Steganina) parvispina, 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 : 31

Stegana (Steganina) parvispina sp. nov.

( Figs 41–44 )

Diagnosis. This species is similar to S. tentaculifera sp. nov. in the male terminalia, showing distinct dissimilarity in aedeagus, in this species: aedeagus with denser serrated, minute processes on ventral and dorsal surfaces, expressly about 12 irregular rows on ventral surface ( Figs 43, 44 ).

Description. Male terminalia: Epandrium slightly protruded ventrally ( Fig. 41 ). Surstylus with 8 prensisetae submedially ( Fig. 41, 42 ). Tenth sternite slightly protruded basolaterally. Paramere with ca. 4, 5 sensilla ( Figs 43, 44 ). Aedeagus with globular projections bearing finely serrated processes basally, slightly round on opening in ventral view ( Figs 43, 44 ). Gonopods round apically, not protruded dorsomedially.

Measurements. BL = 3.45 mm in holotype (3.55 mm in 1Ƥ paratype), ThL = 1.93 mm (2.03 mm), WL = 4.10 mm (3.75 mm), WW = 1.70 mm (1.75 mm), arb = 8–9/6 (9/5–6), avd = 0.70 (0.80), adf = 1.47 (1.50), flw = 1.83 (1.83), FW/HW = 0.44 (0.47), ch/o = 0.15 (0.16), prorb = 1.10 (1.15), rcorb = 0.83 (0.85), vb = 0.45 (0.47), dcl = 0.52 (0.54), sctl = 1.45 (1.57), sterno = 0.76 (0.81), orbito = 1.75 (1.80), dcp = 0.24 (0.24), sctlp = 1.78 (1.88), C = 1.92 (2.09), 4c = 1.12 (1.09), 4v = 1.81 (1.80), 5x = 1.25 (1.27), ac = 9.00 (10.67), M = 0.47 (0.51), C3F = 0.68 (0.69).

Type material. Holotype 3 ( SCAU, No. 120774), CHINA: Foping, Qinling, Shaanxi, 32°32' N, 107°41' E, 1000 m, 6.viii.2003, JJ Gao. Paratypes: CHINA: 1Ƥ ( SCAU, No. 120775), same data as holotype.

Distribution. China (Shaanxi).

Etymology. A combination of the Latin words: parvus (= small) and spina (= thorn), referring to the aedeagus with serrated processes basally.

Figures

FIGURES 41 – 44. Stegana (Steganina) parvispina sp. nov., male terminalia: 41. Epandrium, cercus and surstylus; 42. surstylus; 43, 44. hypandrium, aedeagus and aedeagal apodeme. Scale bars: 0.1 mm.