Stegana (Steganina) glabra, 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 : 27-28

Stegana (Steganina) glabra sp. nov.

( Figs 14–20 )

Diagnosis. This species is related to S. ctenaria from Japan, but clearly distinguishable from the latter by the tenth sternite squarely protruded and bearing pubescence apically ( Fig. 16 ).

Description. Male terminalia: Epandrium roundly protruded ventrally ( Fig. 14 ). Cercus lacking pubescence ( Fig. 14 ). Surstylus with 7 prensisetae submedially ( Fig. 15 ). Paramere with ca. 5 sensilla ( Figs 17, 18 ). Aedeagus with globular projections bearing finely serrated processes basally, nearly oval on opening in ventral view, protruded apically ( Figs 17, 18 ). Gonopods round apically, not protruded dorsomedially ( Figs 19, 20 ).

Measurements. BL = 2.78 mm in holotype (range in 73 and 5Ƥ paratypes: 2.48–3.48 mm in 3, 2.50–3.84 mm in Ƥ), ThL = 1.84 mm (1.60–2.06 mm in 3, 1.68–2.34 mm in Ƥ), WL = 3.65 mm (3.32–4.05 mm in 3, 3.15–4.35 mm in Ƥ), WW = 1.58 mm (1.42–1.76 mm in 3, 1.34–1.80 mm in Ƥ), arb = 9/6 (8–9/6), avd = 0.85 (0.67–0.83), adf = 1.63 (1.25–2.00), flw = 1.75 (1.63–2.00), FW/HW = 0.47 (0.39–0.50), ch/o = 0.24 (0.19–0.25), prorb = 1.06 (1.05–1.25), rcorb = 0.63 (0.58–0.71), vb = 0.47 (0.36–0.47), dcl = 0.39 (0.38–0.55), presctl = 0.53 (0.43–0.63), sctl = 1.36 (1.21–1.53), sterno = 0.85 (0.81–0.92), orbito = 2.25 (1.75–2.00), dcp = 0.17 (0.17–0.23), sctlp = 1.62 (1.53–2.11), C = 2.12 (1.79–2.15), 4c = 1.11 (1.11–1.20), 4v = 1.86 (1.73–2.13), 5x = 1.27 (1.20–1.64), ac = 10.25 (9.25–12.00), M = 0.51 (0.44–0.56), C3F = 0.71 (0.68–0.75).

Type material. Holotype 3 ( SCAU, No. 120726), CHINA: Mt. Jizu, Binchuan, Yunnan, 26˚00' N, 100˚21' E, 1900 m, 20–23.vii.2006, T Li. Paratypes: CHINA: 535Ƥ (232Ƥ in KIZ; 333Ƥ in SCAU, Nos 120727 -32), same data as holotype except HL Cao, HZ Cao, T Li; 13 ( SCAU, No. 120733), Qiongzhusi, Kunming, Yunnan, 25˚02' N, 102˚43' E, 1900 m, 19.vii.2006, HL Cao; 331Ƥ ( SCAU, Nos 120734 -37), Mt. Wuliang, Nanjian, Yunnan, 24˚32' N, 101˚01' E, 2200 m, 25–27.vii.2006, HL Cao, HZ Cao, T Li; 2Ƥ ( SCAU, Nos 120738, 39), Mt. Ailao, Jingdong, Yunnan, 2450 m, 31.vii.2006, T Li; 533Ƥ (231Ƥ in KIZ; 332Ƥ in SCAU, Nos 120740 -44), Mt. Wuliang, Jingdong, Yunnan, 1800 m, 4.viii.2006, HL Cao, HZ Cao, T Li; 13 ( SCAU, No. 121226), Kuankuoshui, Guizhou, 28˚14' N, 107˚10' E, 1500 m, 11.viii.2011, YR Su.

Distribution. China (Guizhou, Yunnan).

Etymology. From the Latin word “glabrus” (= smooth), referring to the paramere lacking sensilla.

Figures

FIGURES 14 – 20. Stegana (Steganina) glabra sp. nov., male terminalia: 14. Epandrium, cercus and surstylus; 15. surstylus; 16. 10 th sternite; 17, 18. hypandrium, aedeagus and aedeagal apodeme; 19, 20. gonopods. Scale bars: 0.1 mm.