Gammabracon subvena Quicke & Hogan & Bennett & Broad & Butcher 2017, sp. nov.
Creators: name: Quicke, Donald L. J.
name: Hogan, James E.
name: Bennett, Andrew M. R.
name: Broad, Gavin R.
name: Butcher, Buntika A.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Gammabracon
Gammabracon subvena

description: Gammabracon subvena Quicke and Butcher sp. nov.   
(Figures 12, 13)  
 Material examined   
HOLOTYPE: Female. MALAYSIA ‘ Pasoh Forest Res., Negri S., Malaysia, V. 17.[19]78 far gap P. & M. Becker’ (EMUS).  
 PARATYPES: 1 female, Same data as holotype but ‘III.30. [19]78’ (EMUS); 1 female ‘ MALAYSIA – SW. SABAH, nr Long Pa Sia (West), c. 1200m, 2–14.IV.1987, Mal. trap 7, RMNH’87 C.v. Achterberg’ (RMNH).   
 Description   
Female: Length of body 13.1 mm, of forewing 13.3 mm, of antenna 10.5 mm, of exserted part of ovipositor 22.0 mm.  
Head. Antenna with 60–66 flagellomeres; terminal flagellomere with short apical spine; median flagellomeres 1.1 × longer than wide; 1st flagellomere 1.45 × longer than both 2nd and 3rd, respectively; width of head:width of face:height of eye = 2.2:1.2:1.0; intertentorial distance equal to shortest distance between tentorial pit and eye; frons deeply impressed behind antennal sockets, deeply punctate laterally; shortest distance between posterior ocelli:transverse diameter of posterior ocellus:shortest distance between posterior ocellus and eye = 1.0:1.0:3.5; length of head behind eye 0.8 × length of eye in dorsal view.  
Mesosoma. 1.8 × longer than high; scutellar sulcus crenulate with large median pit; posterior margin of propodeum medially sharply defined from transverse subposterior depression, and medially with a distinct pit.  
Wings. Forewing vein 3RSb 1.7 and 6.0 × longer than 3RSa and rs-m, respectively; vein 1-M gradually and weakly expanding before junction with (Rs+M)a; vein 1cu-a marginally postfurcal, anterior junction hardly swollen; vein m-cu not thickened and nearly straight; base of hind wing with glabrous area extending along basal half of 1-M close to vein, not emarginate.  
Legs. Foretibia with long black setae.  
Metasoma. 1st tergite 1.15 × longer than apically wide with posteromedial part weakly irregularly sculptured; sides of raised median area smooth and shiny; 2nd tergite 1.4 × wider than medial length, 1.2 × longer than 3rd tergite, with short, smooth, obtuse midbasal triangular area, with posteriorly converging sublateral carinae that widen weakly anteriorly and anastomose weakly posteriorly; 3rd tergite with strongly crenulate transverse basal groove, with widely crenulate transverse median groove, with strong midlongitudinal carina formed from fusion of several submedial crenulate of basal groove; ovipositor 1.7 × longer than body.  
 Etymology   
 Named in reference to the less modified forewing venation than other members of Gammabracon.   
Head (including stemmaticum), scapus (except dark laterally) yellow; mesosoma (except lateral of propodeum which are darker), fore and mid legs orange; flagellum, hind legs and metasoma black except anterolateral margin of 2nd metasomal tergite which are pale brown; wing membrane pale yellow basally becoming infuscate apically; venation brown to dark brown, pterostigma and brown-yellow.  
 Comments   
 Gammabracon subvena differs from all other species of the genus in having its forewing venation markedly less modified, specifically with vein 1-M not abruptly widened anteriorly, junction of veins 1cu-a and 1-M not markedly swollen and vein m-cu narrow, and only weakly curved. In addition, the glabrous area of the hind wing extends distally just posterior to vein 1Ma as a sparsely setose zone for approximately 0.4 of the length of 1Ma.
description: Published as part of Quicke, Donald L. J., Hogan, James E., Bennett, Andrew M. R., Broad, Gavin R. & Butcher, Buntika A., 2017, Partial revision of the Indo-Australian braconine wasp genus Gammabracon Quicke (Hymenoptera: Braconidae) with descriptions of new species from Indonesia (Mollucas), Malaysia, Philippines and Thailand, pp. 1249-1294 in Journal of Natural History 51 (21 - 22) on pages 1269-1271, DOI: 10.1080/00222933.2017.1324055, http://zenodo.org/record/5181511