Stegana (Steganina) multidentata, 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 : 1917-1918

Stegana (Steganina) multidentata sp. nov.

( Figures 28–33 )

Diagnosis

Epandrium broadened, more widely than 3/5 high ( Figure 28 ); aedeagal opening nearly rhombic in ventral view ( Figure 31 ).

Description

Male terminalia: epandrium slightly protruded ventrally ( Figure 28 ). Surstylus with seven prensisetae submedially ( Figure 29 ). Tenth sternite broadened apically, slightly protruded basolaterally ( Figure 30 ). Paramere with ca. five to six sensilla ( Figures 31, 32 ). Gonopods round apically, dorsomedially not protruded in lateral view ( Figure 33 ). Aedeagus with one pair of finely serrated processes ( Figures 31, 32 ).

Measurements. BL = 2.87 mm in holotype (range in two Ƌ paratypes: 2.50–3.10 mm), ThL = 1.65 mm (1.58–1.80 mm), WL = 3.10 mm (3.10–3.55 mm), WW = 1.20 mm (1.30–1.55 mm).

Indices. arb = 9/5 (9/5); avd = 0.70 (0.63–0.70); adf = 1.67 (1.67–1.78); flw = 1.67 (1.67–1.83); FW/HW = 0.46 (0.45–0.46); ch/o = 0.14 (0.13–0.16); prorb = 1.10 (1.18– 1.22); rcorb = damaged (0.73–0.78); vb = 0.45 (0.40–0.45); dcl = 0.47 (0.50–0.59); sctl = 1.32 (1.33–1.37); sterno = 0.82 (0.79–0.82); orbito = 2.33 (2.33–2.33); dcp = 0.23 (0.22–0.23); sctlp = 1.75 (1.73–1.88); C = 1.91 (1.78–2.06); 4c = 1.14 (1.14–1.28); 4v = 1.75 (1.79–1.96); 5x = 1.20 (1.20–1.27); ac = 16.00 (16.00–16.50); M = 0.43 (0.48– 0.50); C3F = 0.71 (0.66–0.68).

Type material

Holotype: Ƌ, China: Shennongjia , Hubei, 31°49’N, 109°41’E, altitude 1900m, 1 August 2005, HW Chen ( SCAU, No. 120351).

Distribution

China (Hubei).

Etymology

A combination of the Latin words: multus and dens, referring to the surstylus with one row of prensisetae.

Figures

Figures 28–33. Stegana (Steganina) multidentata sp. nov., Ƌ. (27) Epandrium, surstylus and cercus; (29) surstylus; (30) tenth sternite; (31, 32) hypandrium, aedeagus and aedeagal apodeme; (33) gonopods. For orientation and organization see Figures 8–14. Scale bars: 0.1 mm.