Gammabracon siamensis Quicke &amp; Hogan &amp; Bennett &amp; Broad &amp; 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 siamensis

description: <i>Gammabracon siamensis</i> Quicke and Butcher sp. nov. (Figures 6, 7) <i>Material examined</i> HOLOTYPE: Female. THAILAND, Trang Province, Khao Chong, Forest Research Station, 7° 33 <i>ʹ</i> 2 <i>ʺ</i> N, 99° 47 <i>ʹ</i> 23 <i>ʺ</i> E, 75 m, August 2005, D. Lohman. (QSBG). <i>Description</i> Female: Length of body 10 mm, of forewing 10 mm, of antenna 9.5 mm, of exserted part of ovipositor 15 mm. Head. Antenna with 59 flagellomeres; terminal flagellomere acuminate; median flagellomeres 1.1; 1st flagellomere 1.4 × longer than 2nd and 3rd separately; width of head: width of face:height of eye = 1.8:1.0:1.0; intertentorial distance 1.37 × shortest distance between tentorial pit and eye; frons weakly and gradually impressed behind antennal sockets; shortest distance between posterior ocelli:transverse diameter of posterior ocellus:shortest distance between posterior ocellus and eye = 1.6:1.0:3.0; length of head behind eye 0.5 × length of eye in dorsal view. Mesosoma. 1.9 × longer than high; scutellar sulcus with small medial notch; midposterior margin of propodeum gradually enlarged. Wings. Forewing vein 3RSb 1.8 × longer than 3RSa and 6 × longer than rs-m; vein 1-M strongly expanding before junction with (Rs+M)a; anterior junction of vein 1cu-1 swollen; vein m-cu strongly thickened, weakly curved; base of hind wing with small glabrous area, not emarginate. Legs. Foretibia with piceous long setae. Metasoma. 1st tergite 1.3 × longer than apically wide with irregular longitudinal rugae between dorsal carinae, smooth lateral to dorsal carinae; 2nd tergite 1.3 × wider posteriorly than medially long, 1.15 × longer medially than tergite 3, with short midbasal triangular area, with posteriorly converging sublateral carinae that narrow and bifurcate posteriorly; 3rd tergite largely with strong longitudinal striation including pair of parallel medial carinae; 4th metasomal tergite with some longitudinal striae mediobasally forming a fan-like pattern and narrowly crenulate transverse median groove; ovipositor 1.5 × longer than body; ovipositor sheaths with dense, long setosity. Colour. Head (including stemmaticum), scapus (except dark laterally) yellow; mesosoma, fore and mid legs orange; flagellum, hind legs and metasoma black; wing membrane yellow but apical part of forewing and apical and posterior part of hind wing infuscate. <i>Etymology</i> Based on the old name for Thailand.
description: Published as part of <i>Quicke, Donald L. J., Hogan, James E., Bennett, Andrew M. R., Broad, Gavin R. &amp; 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)</i> on pages 1261-1263, DOI: 10.1080/00222933.2017.1324055, http://zenodo.org/record/5181511