Parastegana (Allstegana) brevivena Chen and Zhang, 2007

Chen, Hong-Wei, Watabe, Hideaki & Zhang, Wen-Xia, 2007, A new subgenus Parastegana (Allstegana) (Diptera, Drosophilidae), with descriptions of two new species from South China, Journal of Natural History 41 (37 - 40), pp. 2403-2410 : 2406-2408

publication ID	https://doi.org/ 10.1080/00222930701633612
persistent identifier	https://treatment.plazi.org/id/0C7887A2-FF8F-AB23-673C-FB13FE6FB04C
treatment provided by	Carolina
scientific name	Parastegana (Allstegana) brevivena Chen and Zhang
status	sp. nov.

Treatment

Parastegana (Allstegana) brevivena Chen and Zhang View in CoL , sp. nov.

( Figures 3 View Figures 1–4 , 5–9 View Figures 5–9 )

Description

Head. Frons brown. Face and clypeus yellow-brown. Gena brown-red. Palpus yellow.

Thorax. Mesonotum yellow, with three obscure brown, longitudinal stripes on posterior half; median stripe posteriorly triangularly broadened. Pleura brown. Scutellum dark brown, pale on tip.

Wing. R 2+3 with a short branch subapically ( Figure 2 View Figures 1–4 ).

Legs. Yellow-grey. Abdomen. Male: first tergite yellow-brown; the others brown; first to fifth sternites yellow. Female: all tergites yellow-brown; first to fifth sternites yellow; sixth and seventh yellowbrown.

Male terminalia. Cercus rounded ventrally in lateral view ( Figure 5 View Figures 5–9 ). Aedeagus rough on surface ( Figures 6–8 View Figures 5–9 ). Paramere proximally broad, submedially deeply concaved in lateral view ( Figure 7 View Figures 5–9 ).

Female terminalia. Hypoproct pubescent, setulose, subcaudally with setae ( Figure 9 View Figures 5–9 ).

Measurements. BL54.00 mm in holotype (range 1 „ paratype), ThL 51.73 mm (1.65), WL 52.83 mm (2.80), WW51.00 mm (1.00).

Indices. arb55–6/0 (4/0), adf51.50 (1.60), flw52.00 (1.90), FW/HW50.45 (0.45), ch/ o50.09 (0.09), prorb51.00 (1.00), rcorb50.17 (0.17); vb50.28 (0.30), dcl50.17 (0.17), sctl51.10 (1.10), sterno50.70 (0.65), orbito50.80 (0.70), dcp50.20 (0.20), sctlp50.95 (1.00).

Type material

Holotype: „, Yunnan: Dandang Park, Gongshan , 1750 m, 22 June 1993, W. X. Zhang ( KIZ). Paratypes: 1 R, same data as holotype ( KIZ); 1 „, Yunnan: Pianma, Lushui, 2600 m, 18 August 2000, H. W. Chen ( SCAU).

Distribution

China (Yunnan).

Etymology A combination of the Latin words: brevis (short) + vena (vein), referring to the R2+3 with a

short branch subapically.