Sculptolobus bipustulatus ( Szepligeti , 1913) Samartsev & van Achterberg, 2021

Samartsev, Konstantin & van Achterberg, Cornelis, 2021, Afrotropical species of the genus Sculptolobus Yang, van Achterberg & Chen (Hymenoptera, Braconidae, Braconinae), Journal of Hymenoptera Research 84, pp. 301-325 : 301

Sculptolobus bipustulatus ( Szepligeti, 1913) comb. nov.

Fig. 2

Bracon bipustulatus Szépligeti, 1913: 597; De Saeger 1943: 375; Shenefelt 1978: 1470; Quicke 1991: 171 (as a member of the Compsobraconoides genus group).

Microbracon bipustulatus : Brues 1926: 309.

Microbracon recessus Szépligeti sec. Brues 1926: 210 (wrong taxon concept according to De Saeger 1943: 375).

Material examined.

Holotype. Ethiopia • Female ; Harar; Jun. 1911; O. Kovacs leg.; HNHM Hym.Typ.No. 1274.

Other material. (2 females, 1 male). Yemen • 1 female; al-Lahima; 1200 m a.s.l.; 1 Jan. - 9 Apr. 2001; A. van Harten & A.M. Hager leg.; Malaise trap, no. 5486; RMNH INS.1455939 • 1 male; same data as for preceding; RMNH INS.1455940 • 1 female; same data as for preceding; 16 Oct. - 31 Dec. 2001; Malaise trap, no. 5310; ZISP Hym.KS.0005014 .

Distribution.

Democratic Republic of Congo ( De Saeger 1943), Egypt ( Fahringer 1927), Ethiopia ( Szépligeti 1913), Yemen (new record). Possibly also South Africa and Tanzania ( Brues 1926: 210, as Microbracon recessus Szépligeti, explained in De Saeger 1943: 375).

Description.

Female. Fore wing length 2.6-3.2 mm. Head. Width of head (dorsal view) 1.9-2.0 × its median length. Transverse diameter of eye (dorsal view) 1.8-2.1 × length of temple. OOL 2.6-2.8 × Od; POL 1.2-1.4 × Od; OOL 1.9-2.3 × POL. Longitudinal diameter of eye (lateral view) 1.3-1.4 × its transverse diameter. Face medially weakly swollen, incorporating clypeus, with very high medio-longitudinal carina, 1.3-1.6 × as wide as high. Longitudinal diameter of eye 2.5-2.6 × height of malar space (anterior view). Malar space as long as base of mandible. Malar suture shallow or deep, smooth. Width of hypoclypeal depression about 1.3 × distance from depression to eye. Antenna with 26-29 antennomeres, 1.0-1.1 × as long as fore wing. First, middle and penultimate flagellomeres 1.9-2.3 ×, 1.8-2.0 ×, and 2.0-2.2 × as long as wide, respectively. Mesosoma 1.3-1.4 × as long as high. Mesoscutum setose on notaulic area and posteriorly, anteromedially widely glabrous. Propodeum with branching medio-longitudinal keel in apical third and at most with weak medio-longitudinal impression basally. Wings. Vein r arising from basal 0.35-0.50 × of pterostigma. Vein 1-R1 1.8-2.0 × as long as pterostigma. Marginal cell 7-12 × as long as distance from its apex to apex of wing. Vein 3-SR 2.5-3.2 × vein r, 0.6-0.7 × vein SR1, 1.9-2.1 × vein 2-SR. Vein 2-SR+M 0.55-0.60 × vein 2-SR, 1.0-1.1 × vein m-cu. Vein cu-a weakly or distinctly postfurcal. Legs. Hind femur 4.7-5.3 × longer than wide. Fifth segment of hind tarsus 0.77-0.85 × as long as second segment, 0.40-0.45 × as long as hind basitarsus. Claws with large, protruding and blunt basal lobes. Metasoma. Median length of T1 0.59-0.62 × its apical width; margin of its median area crenulate. T1 with developed (incomplete or complete) dorsal carinae and laterally compressed median area, with or without sublateral posteriorly converging carinae; dorsolateral carinae of T1 developed. T2 medially 1.2-1.4 × as long as T3; basal width of T2 1.4-1.7 × its median length. Anterolateral areas of T2 round, strongly separated by deep complete crenulate furrows and sharp crenulate margins, delineating not elevated subparallel-sided median area. Dorsolateral impressions of T2 absent; spiracle located behind middle of T2, on dorsum of tergite. Suture between T2 and T3 deep, almost straight, and crenulate. Apical margins of T3-T6 with deep or shallow, weakly crenulate transverse subapical grooves. Apical margins of T3-T6 laterally straight. Ovipositor sheath 1.6-1.7 × and 0.5-0.6 × as long as hind tibia and fore wing, respectively. Sculpture and colouration. T2-T5 with gradually vanishing weak longitudinal rugosity. Body mainly reddish yellow; tegulae yellow; antenna brown; malar space pale yellow; pterostigma brown or yellowish brown; wing veins brown to yellowish brown; wing membrane weakly darkened, often lighter apically.

Male. Fore wing length 2.2 mm. Width of head (dorsal view) 1.8 × its median length. OOL 2.4 × Od; POL 1.6 × Od; OOL 1.6 × POL. Longitudinal diameter of eye 2.8 × height of malar space (anterior view). Antenna with 25 antennomeres. Marginal cell 15 × as long as distance from its apex to apex of wing. Hind femur 4.5 × longer than wide. Fifth segment of hind tarsus 0.95 × as long as second segment, 0.5 × as long as hind basitarsus. Median length of T1 0.50 × its apical width. Body with brown patches on vertex, mesoscutum, and T3-T6; T1-T2 pale yellow. Otherwise similar to female.

Figures

Figure 2. Sculptolobus bipustulatus (Szepligeti, 1913), comb. nov. (A-I holotype, female, HNHM J-Q, S-U female, RMNH R female ZISP V male, RMNH) A, J habitus, lateral view B, R T 1, dorsal view C tarsal claw D, L head, lateral view E, O mesosoma, lateral view F head, dorsal view G, Q propodeum, dorsal view H, T mesosoma, dorsal view I, U metasoma, dorsal view K fore wing M head, ventrolateral view N head, anterior view P apex of ovipositor S hind tarsus, anterior view V habitus, dorsal view. ala anterolateral area dc dorsal carina dlc dorsolateral carina slc sublateral carina. Scale bars: 1 mm (A, J, K, V); 0.5 mm (B, E, H, I, O, T, U); 0.25 mm (C, D, F, G, L-N, P-S).