Stegana (Oxyphortica) apicosetosa, 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 : 61-62

Stegana (Oxyphortica) apicosetosa sp. nov.

( Figs 9–12 )

Diagnosis. This new species differs from S. (O.) apicopubescens sp. nov. by having the dorsal lobe of gonopods with several serrated processes subapically ( Fig. 12 ), the surstylus with 1 strong prensiseta subdorsally and flat anteroventrally ( Fig. 10 ).

Description. Male and female: Frons brown above, dark brown below. Face, clypeus and gena brown. Mesoscutum yellow medially, brownish yellow laterally. Scutellum yellow in male, brownish in female. Pleura below yellowish brown in male, brown in female. All abdominal tergites brown, yellow on median line of 2nd to 4th tergites; sternites yellow, brown to dark brown on tergites 5th and 6th in male, while on tergites 5th to 7th in female.

Measurements. BL = 3.05 mm in holotype (range in 53 4ΨΨ paratypes: 2.75–3.10 in 3, 3.12–3.88 in ΨΨ), ThL = 1.36 mm (1.20–1.28 in 3, 1.03–1.68 in ΨΨ), WL = 2.70 mm (2.40–2.80 in 3, 2.08–3.12 in ΨΨ), WW = 1.20 mm (0.84–1.02 in 3, 1.00– 1.48 in ΨΨ), arb =6/4 (6–9/4–5), avd = 0.71 (0.71–0.87), adf = 1.91 (1.92–2.67), flw =1.73 (1.78–2.18), FW/HW = 0.48 (0.38–0.48), ch/o = 0.07 (0.08–0.11), prorb = 1.36 (1.10–1.29), rcorb = 0.92 (0.71–0.90), vb = 0.69 (0.45–0.69), dcl = 0.53 (0.35–0.52), presctl = 0.73 (0.46– 0.60), sctl = 1.51 (0.90–1.21), sterno = 1.03 (0.73–0.97), orbito = 1.71 (1.83–2.86), dcp = 0.27 (0.26–0.34), sctlp = 0.83 (0.94–1.09), C = 3.31 (2.77–3.35), 4c = 0.77 (0.73–0.81), 4v = 1.91 (1.61–1.86), 5x = 1.30 (1.00– 1.29), ac = 4.08 (3.38–4.38), M = 0.47 (0.39–0.47), C3F = 0.84 (0.75–0.90).

Specimens examined. Holotype 3 (SCAU, No. 120517), CHINA: Nanling, Ruyuan, Guangdong, 500 m, 3.x.2004, M.F. Xu. Paratypes: 132ΨΨ (SCAU, Nos. 120518 -20), same data as holotype; 103 5ΨΨ (53 2ΨΨ in KIZ; 53 3ΨΨ in SCAU, Nos 120521 -28), Maoershan, Guilin, Guangxi, 500 m, 23–25.ix. 2006, J.J. Jiang & F. Zhao.

Etymology. A combination of the Latin words: apex and setosus, referring to the aedeagus with tentaclelike processes apically.

Distribution. China (Guangdong, Guangxi).

Figures

FIGURES 9 – 12. Stegana (Oxyphortica) apicosetosa sp. nov. 3. 9. Epandrium, cercus and surstylus (lateral view); 10. Surstylus (ventral view); 11, 12. Hypandrium, parameres, gonopods, aedeagus and aedeagal apodeme. Scale lines = 0.1 mm.