Stegana (Steganina) jiajinshanensis, 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 : 1913-1914

Stegana (Steganina) jiajinshanensis sp. nov.

( Figures 8–14 )

Diagnosis

Tenth sternite broadened distally, deeply separated basally ( Figure 10 ); dorsal projection of gonopods strongly protruded in lateral view, round at tip ( Figure 14 ).

Description

Male terminalia: epandrium strongly protruded ventrally ( Figure 8 ). Surstylus with six prensisetae submedially ( Figure 9 ). Paramere with ca. three sensilla ( Figures 11, 12 ). Aedeagal opening nearly triangular in ventral view ( Figure 11 ).

Measurements. BL = 3.20 mm in holotype (3.00 mm in one Ƌ paratype), ThL = 1.83 mm (1.68 mm), WL = 3.60 mm (3.60 mm), WW = 1.55 mm (1.45 mm).

Indices. arb = 8/5 (8/5); avd = 0.83 (0.90); adf = 1.60 (1.67); flw = 1.83 (1.83); FW/ HW = 0.41 (0.40); ch/o = 0.16 (0.16); prorb = 1.18 (1.18); rcorb = 0.73 (0.73); vb = 0.41 (0.41); dcl = (damaged); sctl = 1.61 (damaged); sterno = damaged (0.84); orbito = 1.60 (1.60); dcp = 0.23 (0.21); sctlp = 1.64 (1.67); C = 2.00 (1.97); 4c = 1.13 (1.14); 4v = 1.74 (1.82); 5x = 1.50 (1.36); ac = 11.67 (10.67); M = 0.48 (0.54); C3F = 0.69 (0.71).

Type material

Holotype: Ƌ, China: Fengtongzhai, Baoxing , Sichuan, 30°34’ N, 102°53’ E, altitude 1600m, 10 July 2007, JJ Jiang ( SCAU, No. 120318) . Paratype: one Ƌ, same data as holotype, HZ Cao ( SCAU, No. 120319) .

Distribution

China (Sichuan).

Figures

Figures 8–14. Stegana (Steganina) jiajinshanensis sp. nov., Ƌ. (8) Epandrium (epan), surstylus (sur) and cercus (cerc) (lateral view); (9) surstylus (ventral view); (10) 10th sternite; (11, 12) hypandrium (hypd), parameres (pm), aedeagus (aed) and aedeagal apodeme (aed a) (ventral and lateral view); (13, 14) gonopods (ventral and lateral view). Scale bars: 0.1 mm.