Stegana (Steganina) xiaoleiae, Cao, Hua-Zhi & Chen, Hong-Wei, 2008

Cao, Hua-Zhi & Chen, Hong-Wei, 2008, Revision of the Stegana nigrolimbata species group (Diptera: Drosophilidae) from the Oriental Region, Zootaxa 1848, pp. 27-36 : 34-35

Stegana (Steganina) xiaoleiae sp. nov.

( Figs 20–23 )

Type material. Holotype ɗ ( SCAU, No. 120421), labeled “ CHINA: Mt Maoer, Guilin, Guangxi, 25°51' N, 110°27' E, 700 m a.s.l, on tree trunk, 16.x.2004, H.W. Chen”. Paratypes: CHINA: 15ɗ29Ψ (3ɗ3Ψ in KIZ, 9ɗ23Ψ in SCAU, Nos 120422 –53; 3ɗ3Ψ in SEHU), same data as holotype except for, 16–19.x.2004, 19– 25.ix.2006, H.L. Cao, H.W. Chen, J.J. Jiang, M.F. Xu, X.L. Zhang, F. Zhao.

Etymology. Patronym of the collector Ms. Xiaolei Zhang (SCAU).

Diagnosis. Palpus yellow; mesonotum with a yellow stripe medially; mesopleuron white below black longitudinal stripe; legs almost white.

Description. Male and female: Frons dark brown, with narrow yellow band submedially. Palpus yellow, dark apically. Gena yellow. Mesonotum dark brown, with yellow stripe postero-medially. Postpronotal lobe brown on upper 3/5, white on lower 2/5. Mesopleuron white below black longitudinal stripe. Scutellum black. Legs brown, white on basal parts of all femora, black on fore knee joints and basal part of all 1st tarsomeres. Fore femur with 3 setae on distal part of ventral surface. Abdominal tergites brown to black, sometimes yellow laterally. Sternites white yellow. Plate between hypandrium and aedeagus with a few pubescence ( Fig. 22 ).

Measurements. BL = 3.26 mm in holotype (range 4ɗ and 5Ψ paratypes: 2.72–2.96 in ɗ, 2.80–3.08 in Ψ), ThL = 1.65 mm (1.43–1.53 in ɗ, 1.45–1.60 in Ψ), WL = 2.84 mm (2.40–2.52 in ɗ, 2.45–2.72 in Ψ), WW = 1.42 mm (1.20–1.28 in ɗ, 1.25–1.38 in Ψ). Indices: arb = 7/6 (7/6–7/7), avd = 0.77 (0.72–0.80), adf = 1.42 (1.25–1.63), flw = 1.88 (1.67–2.00), FW/HW = 0.40 (0.41–0.43), ch/o = 0.09 (0.09), prorb = 1.12 (1.00–1.30), rcorb = 0.80 (0.74–0.82), vb = 0.40 (0.32–0.40), dcl = 0.34 (0.35–0.42), presctl = 0.53 (0.50–0.64), sctl = 1.40 (1.41–1.53), sterno = 0.89 (0.80–0.92), orbito = 2.23 (1.92–2.33), dcp = 0.21 (0.16–0.22), sctlp = 1.31 (1.21– 1.40), C = 1.86 (1.82–1.97), 4c = 1.31 (1.15–1.31), 4v = 1.88 (1.57–1.74), 5x = 1.20 (1.08–1.38), ac = 9.84 (9.00–10.28), M = 0.50 (0.47–0.50), C3F = 0.62 (0.59–0.63).

Distribution. China (Guangxi).

Figures

FIGURES 20 – 23. Stegana (Steganina) xiaoleiae sp. nov.,: 20. Epandrium, surstylus and cercus (lateral view); 21. surstylus (frontal view); 22. hypandrium, aedeagus and aedeagal apodeme (ventral view); 23. base of aedeagus, gonopods and aedeagal apodeme (posterior view) (scale lines = 0.1 mm).