Stegana (Steganina) qinlingensis, Chen & Gao & Chen, 2009

Chen, Xi-Peng, Gao, Jian-Jun & Chen, Hong-Wei, 2009, The Stegana shirozui species group (Diptera, Drosophilidae) from East Asia, Journal of Natural History 43 (31 - 32), pp. 1909-1927 : 1918-1919

Stegana (Steganina) qinlingensis sp. nov.

( Figures 34–41 )

Diagnosis

Hypandrium with numerous, serrated processes on flaps ( Figures 37, 38 ); aedeagal opening narrow, aperture-like in ventral view ( Figure 39 ).

Description

Male terminalia: epandrium strongly protruded ventrally ( Figure 34 ). Surstylus with six prensisetae submedially ( Figure 35 ). Tenth sternite broadened and with two projections distally, slightly protruded basolaterally ( Figure 36 ). Paramere with ca. four to five sensilla ( Figures 37, 38 ). Dorsal projection of gonopods rod-like, strongly dorsad protruded in lateral view ( Figure 41 ).

Measurements. BL = 3.52 mm in holotype (range in one Ƌ and four ♀ paratypes: 3.55 mm in Ƌ, 3.15–3.45 mm in ♀), ThL = 1.88 mm (1.93 mm in Ƌ, 1.83–2.03 mm in ♀), WL = 3.50 mm (4.10 mm in Ƌ, 3.50–3.75 mm in ♀), WW = 1.50 mm (1.70 mm in Ƌ, 1.50–1.75 mm in ♀).

Indices. arb = 9/6 (8–9/5–6); avd = 0.70 (0.67–0.80); adf = 1.67 (1.42–1.50); flw = 1.83 (1.71–1.83); FW/HW = 0.44 (0.45–0.47); ch/o = 0.14 (0.14–0.16); prorb = 1.08 (1.08–1.15); rcorb = 0.83 (0.75–0.85); vb = 0.43 (0.43–0.47); dcl = 0.52 (0.52–0.54); sctl = 1.45 (1.20– 1.57); sterno = damaged (0.76–0.81); orbito = 1.75 (1.75–1.80); dcp = 0.24 (0.22–0.24); sctlp = 1.78 (1.70–1.88); C = 1.92 (2.00–2.09); 4c = 1.12 (1.00–1.09); 4v = 1.81 (1.64–1.80); 5x = 1.25 (1.15–1.27); ac = 9.00 (9.50–10.67); M = 0.47 (0.45–0.51); C3F = 0.68 (0.64–0.69).

Type material

Holotype: Ƌ, China: Foping , Shaanxi, 32°32’ N, 107°41’ E, altitude 1000 m, 5, 6 August 2003, JJ Gao ( SCAU, No. 120352) . Paratypes: one Ƌ four ♀, same data as holotype ( SCAU, No. 120353–57) .

Distribution

China (Sichuan).

Figures

Figures 34–41. Stegana (Steganina) qinlingensis sp. nov., Ƌ. (34) Epandrium, surstylus and cercus; (35) surstylus; (36) tenth sternite; (37) hypandrium; (38) hypandrium, aedeagus and aedeagal apodeme; (39) aedeagus; (40, 41) gonopods. For orientation and organization see Figures 8–14. Scale bars: 0.1 mm.