Bacuma darfurensis, Quicke, Donald L. J., Guy, Travis J., Noort, Simon Van, Broad, Gavin R. & Butcher, Buntika A., 2017

Quicke, Donald L. J., Guy, Travis J., Noort, Simon Van, Broad, Gavin R. & Butcher, Buntika A., 2017, New species of Bacuma Cameron (Hymenoptera: Braconidae: Braconinae) from Kenya and West Darfur with a key to species, Zootaxa 4263 (1), pp. 43-71 : 50-51

Bacuma darfurensis sp. nov. Quicke & Butcher

( Fig 1 )

Material examined. HOLOTYPE female SUDAN, “W. DARFUR: N. Jebel Murra. Kurra. 5600ft, 4.vii.1932. M. Steele. ” ( BMNH).

Description (female). Length of body 12 mm, of antenna 8 mm, of fore wing 8.5 mm, and of ovipositor (exserted part) 30 mm.

Head. Antenna broken but with at least 48 flagellomeres. First flagellomere 1.1 and 1.2 × longer than 2nd and 3rd flagellomeres respectively, the latter as long as wide. Width of head: width of face: height of eye = 2.0: 1.0: 1.8. Inter-tentorial distance: tentorio-ocular distance = 1.3: 1.0. Frons deeply impressed postero-medial to antennal sockets, depression bordered antero-laterally by distinct carina running posteriorly from antennal socket. Shortest distance between posterior ocelli: transverse diameter of posterior ocellus: shortest distance between posterior ocellus and eye 1.5: 1.0: 2.0. Length of eye in dorsal view 2.0 × length of head behind eye.

Mesosoma. Mesosoma 1.65 × longer than high. Scutellar sulcus narrow and punctate. Propodeum largely smooth, weakly areolate-rugose near posterior border with metapleuron; lunule smooth.

Wings. Fore wing. Lengths of veins r-rs: 3 RSa: 3RSb = 4.8: 2.8: 1.0. Lengths of veins 2RS: 3 RSa: rs-m = 1.7: 2.4: 1.0. Vein (RS+M)a weakly curved posteriorly shortly after arising from a short, thick vein 1RS. Vein 2CUa quite sharply angled posteriorly. Base of hind wing with large glabrous area distal to vein cu-a.

Legs. Lengths of fore femur: fore tibia: fore tarsus = 1.2: 1.0: 1.5. Lengths of hind femur: hind tibia: hind tarsus = 1.0: 1.1: 1.1.

Metasoma. Second metasomal tergite with mid-basal triangular area smooth, 2.5 x wider basally than medially long; midlongitudinal carina narrow and largely confused with surrounding coarse sculpture; as long as maximally wide. Median length of 3rd tergite 0.8 x 2nd tergite. 3rd and 4th tergites with coarse sculpture interrupted medially by rather smooth, weakly longitudinally striate line.

Colour. Head orange-red, marked pale yellow on lateral part of frons and below eye, with depressed part of frond, stemmaticum and a narrow mid-longitudinal line on occiput black. Mesosoma dark orange-red except pronotum and propleuron blackish (possibly partly post-mortem discolouration), and a pale yellow spot on mesepisternum. Legs orange-red. Metasoma dark orange-red with sternites black; hypopygium dark orange-red laterally, piceous ventrally. Wings largely dark smokey grey with dark brown venation; fore wing with transverse clear band below basal half of pterostigma, sub-basal cell hyaline, pterostigma with yellow basal third.

Males unknown.

Etymology. Named after the type locality where many interesting braconids and other insects were collected by M. Steele.

Figures

FIGURE 1. Bacuma darfurensis Quicke & Butcher sp. nov., holotype, female, (♀). A, habitus lateral view; B, head and mesosoma, lateral view; C, head, dorsal view; D, fore wing; E, head, front view.