Stegana (Oxyphortica) apicopubescens, Cheng, Yu, Xu, Miaofeng & Chen, Hongwei, 2010

Cheng, Yu, Xu, Miaofeng & Chen, Hongwei, 2010, The Stegana (Oxyphortica) convergens species group from the Oriental region (Diptera: Drosophilidae), Zootaxa 2531, pp. 57-63 : 60-61

Stegana (Oxyphortica) apicopubescens sp. nov.

( Figs 5–8 )

Diagnosis. Surstylus strongly protruded anteroventrally, with 2 strong prensisetae dorsally ( Fig. 6 ). This species is somewhat similar to S. (O.) apicosetosa sp. nov., see under that species.

Description. Frons dark brown. Face yellow. Gena and clypeus brown. Mesoscutum yellow medially, brownish laterally. Pleura yellow below. Scutellum brownish. All abdominal tergites yellow medially, brown on lateral and posterior margins. Sternites yellow, tergites 6th and 7th brown to dark brown in female.

Measurements. BL = 2.75 mm in holotype (range in 43 5ΨΨ paratypes: 2.60–2.85 in 3, 2.78–3.52 in ΨΨ), ThL = 1.16 mm (1.18–1.20 in 3, 1.24–1.44 in ΨΨ), WL = 2.55 mm (2.50–2.60 in 3, 2.41–2.75 in ΨΨ), WW =1.00 mm (0.90–1.02 in 3, 1.13–128 in ΨΨ), arb =7/4 (7–8/4–5), avd = 0.65 (0.62–0.95), adf = 2.25 (1.83–2.63), flw =1.50 (1.75–2.13), FW/HW = 0.44 (0.40–0.47), ch/o = 0.08 (0.08–0.10), prorb = 1.36 (1.16–1.68), rcorb = 0.95 (0.77–1.00), vb = 0.78 (0.59–0.75), dcl = 0.13 (0.12–0.49), presctl = 0.58 (0.43– 0.65), sctl = 1.18 (1.15–1.26), sterno = 0.81 (0.73–0.92), orbito = 2.50 (1.40–2.00), dcp = 0.36 (0.25–0.34), sctlp = 1.19 (0.83–1.33), C = 3.36 (2.53–3.59), 4c = 0.77 (0.68–0.91), 4v = 1.82 (1.68–1.88), 5x = 1.30 (1.00– 1.47), ac = 4.30 (3.36–5.33), M = 0.43 (0.43–0.57), C3F = 0.86 (0.81–0.93).

Specimens examined. Holotype 3 (SCAU, No. 120499), CHINA: Maoershan, Guilin, Guangxi, 25°51΄ N, 110°27΄ E, alt. 500 m, 18.x.2004, H.W. Chen. Paratypes: 43 (SCAU, Nos 120500 -03), same data as holotype, H.L. Cao, M.F. Xu & X.L. Zhan; 23 (SCAU, Nos 120504, 05), Chongzou, Guangxi, 22°33΄ N, 106°92΄ E, alt. 230 m, 23,24. viii.2004, H.W. Chen; 73 9ΨΨ (23 3ΨΨ in KIZ; 53 6ΨΨ in SCAU, Nos 120506 -16), Huolushan, Guangdong, 23°11΄ N, 113°22΄ E, alt. 80 m, 5.iv.2005, M.F. Xu.

Etymology. A combination of the Latin words: apex and pubescens, referring to the gonopods with pubescence.

Distribution. China (Guangdong, Guangxi).

Figures

FIGURES 5 – 8. Stegana (Oxyphortica) apicopubescens sp. nov. 3. 5. Epandrium, cercus and surstylus; 6. Surstylus; 7, 8. Hypandrium, parameres, gonopods, aedeagus and aedeagal apodeme. Scale lines = 0.1 mm.