Stegana (Steganina) jianfenglingensis, 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 : 1914-1915

Stegana (Steganina) jianfenglingensis sp. nov.

( Figures 15–20 )

Diagnosis

Paramere undistinguishable ( Figures 18, 19 ); aedeagal opening nearly quadrate in ventral view, apically without tentacle-like setae on posteromedian ( Figure 18 ).

Description

Male terminalia: epandrium slightly protruded ventrally ( Figure 15 ). Surstylus with six prensisetae submedially ( Figure 16 ). Tenth sternite broadened submedially, deeply separated basally ( Figure 17 ). Gonopods not protruded on dorsomedian in lateral view ( Figure 20 ).

Measurements. BL = 2.87 mm in holotype (range in two Ƌ and one ♀ paratypes: 2.44–3.12 mm in Ƌ, 2.53 mm in ♀), ThL = 1.28 mm (1.42–1.86 mm in Ƌ, 1.48 mm in ♀), WL = 2.63 mm (2.47–3.22 mm in Ƌ, 2.94 mm in ♀), WW = 1.17 mm (1.00– 1.48 mm in Ƌ, 1.38 mm in ♀).

Indices. arb = 10/6 (9–11/5–7); avd = 0.82 (0.83–0.85); adf = 1.57 (1.71–1.83); flw = 1.75 (1.75–1.88); FW/HW = 0.41 (0.42–0.45); ch/o = 0.13 (0.14–0.15); prorb = 1.20 (1.08–1.15); rcorb = 0.80 (0.83–0.88); vb = 0.41 (0.43–0.47); dcl = 0.44 (0.44–0.46); sctl = damaged (1.40–1.73); sterno = 0.85 (0.88–0.91); orbito = 1.80 (1.80–1.83); dcp = 0.23 (0.23–0.26); sctlp = 1.67 (1.45–1.75); C = 2.20 (2.06–2.21); 4c = 1.03

(0.97–1.13); 4v = 1.48 (1.49–1.77); 5x = 1.40 (1.25–1.67); ac = 15 (13.67–14); M = 0.48 (0.44–0.50); C3F = 0.65 (0.65–0.78).

Type material

Holotype: Ƌ, China: Jianfengling, Ledong , Hainan, 18°41′ N, 108°52′ E, altitude 780 m, 16 May 2005, MF Xu ( SCAU, No. 120329) . Paratypes: China: one Ƌ one ♀, same data as holotype ( SCAU, No. 120330, 31); one Ƌ, Wuzhishan , Hainan, 20 April 2007, T Li ( SCAU, No. 120332) .

Distribution

China (Hainan).

Figures

Figures 15–20. Stegana (Steganina) jianfenglingensis sp. nov., Ƌ. (15) Epandrium, surstylus and cercus; (16) surstylus; (17) tenth sternite; (18, 19) hypandrium, aedeagus and aedeagal apodeme; (20) gonopods. For orientation and organization see Figures 8–14. Scale bars: 0.1 mm.