Sculptolobus somnialis ( 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 somnialis ( Szepligeti, 1913) comb. nov.

Figs 6L-S , 7A-I

Bracon somnialis Szépligeti, 1913: 598; Shenefelt 1978: 1539 (lectotype designation).

Habrobracon somnialis : Quicke 1991: 173.

Microbracon somnialis : Brues 1926: 313.

Material examined.

Lectotype. Eritrea • Female; Assab; 1907; K. Katona leg.; HNHM 153287 (formerly Hym.Typ.No. 1271).

Paralectotype. Eritrea • 1 male; same data as for lectotype; HNHM 153288 (formerly Hym.Typ.No. 1272) .

Other material. (8 females, 11 males). United Arab Emirates • 1 male; Al-Ajban ; 30 Jan. - 26 Feb. 2006; A. van Harten leg.; Malaise trap, no. 10417; RMNH INS.1455948 • 1 male; Sharjah Desert Park ; 21-29 Mar. 2005; A. van Harten leg.; light trap, no. 1192; RMNH INS.1455953 • 1 male; same data as for preceding; 13-23 Apr. 2005; light trap, no. 1394; RMNH INS.1455954 • 1 male; same data as for preceding; 1-8 Apr. 2007; light trap, no. 7727-30; RMNH INS.1455952 • 3 males; Wadi Bih dam; 13-30 Apr. 2008; K. Mahmood leg.; light trap, no. 11167; RMNH INS.1298173, INS.1298174, INS.1455947 • 1 male; same data as for preceding; 24 Apr. - 23 May 2007; light trap, no. 11366; RMNH INS.1455951 • 1 male; Wadi Safad ; 2-26 Jan. 2006; A. van Harten leg.; white and yellow pan traps; ZISP Hym.KS.0005016 • 1 male; same data as for preceding; 1-15 Apr. 2006; light trap, no. 11296; RMNH INS.1455949 • 1 female; same data as for preceding; 22-29 Apr. 2008; light trap, no. 11181-2; RMNH INS.1455946 .

Yemen • 1 female; al-Kadan; May 2002; A. van Harten & A.R. Al Yarimi leg.; light trap, no. 7189; RMNH INS.1455958 • 2 females; al-Kowd; 8 Jul. 2001 - 12 Jul. 2001; A. van Harten & S. Al Haruri leg.; light trap, no. 5750; RMNH INS.1298175, INS.1455955 • 1 female; same data as for preceding; 21-25 Aug. 2001; light trap, no. 6117; RMNH INS.1455957 • 1 female; same data as for preceding; 1-5 Sep. 2001; light trap, no. 6151; RMNH INS.1298176 • 1 female; same data as for preceding; ZISP Hym.KS.0005017 • 1 female; same data as for preceding; Sep. 2003; light trap, no. 8136; RMNH INS.1455959 • 1 male; Hammam ' Ali; no. 5404; "from coffee-berries (with Ceratitis capitata ?)"; RMNH INS.1455960 .

Distribution.

Eritrea ( Szépligeti 1913; Brues 1926), the Republic of Cabo Verde ( Papp 2012), United Arab Emirates (new record), Yemen (new record). Incorrectly reported for Ethiopia by Yu et al. (2016), because the species was indicated on the territory of Eritrea ( Brues 1926), which separated from Ethiopia in the 1990s.

Description.

Female. Fore wing length 1.6-2.6 mm. Head. Width of head (dorsal view) 1.9-2.1 × its median length. Transverse diameter of eye (dorsal view) 1.9-2.3 × length of temple. OOL 2.1-2.5 × Od; POL 1.6-1.9 × Od; OOL 1.3-1.5 × POL. Longitudinal diameter of eye (lateral view) 1.3-1.5 × its transverse diameter. Face medially not convex, with high medio-longitudinal carina in upper half, 1.8-1.9 × as wide as high. Longitudinal diameter of eye 2.6-2.9 × height of malar space (anterior view). Malar space 0.90-0.95 × base of mandible. Malar suture weakly impressed. Width of hypoclypeal depression 1.0-1.1 × distance from depression to eye. Antenna with 17-22 antennomeres 0.7-0.8 × as long as fore wing. First, middle and penultimate flagellomeres 1.7-2.2 ×, 1.4-2.1 times×, and 1.6-2.3 × as long as wide, respectively. Mesosoma 1.3-1.5 × as long as high. Mesoscutum with variable setosity, entirely setose or widely glabrous on lateral lobes and anteromedially. Propodeum with branching medio-longitudinal keel in apical third and without medio-longitudinal impression basally. Wings. Vein r arising from basal 0.35-0.45 × of pterostigma. Vein 1-R1 1.3-1.6 × as long as pterostigma. Marginal cell 7-10 × distance from its apex to apex of wing. Vein 3-SR 1.0-1.4 × vein r, 0.25-0.35 × vein SR1, 0.7-1.0 × vein 2-SR. Vein 2-SR+M 0.5-0.6 × vein 2-SR, 1.1-1.4 × vein m-cu. Vein cu-a interstitial. Legs. Hind femur 3.4-3.6 × longer than wide. Fifth segment of hind tarsus 0.75-0.85 × as long as second segment, 0.45-0.50 × as long as hind basitarsus. Claws with acute angularly protruding basal lobes. Metasoma. Median length of T1 0.6-0.8 × its apical width; margin of its median area crenulate. T1 without dorsal carinae, with laterally compressed median area, with or without sublateral posteriorly converging carinae; dorsolateral carinae of T1 absent or weakly separated apically. T2 medially 0.9-1.1 × as long as T3; basal width of T2 1.9-2.1 × its median length. Anterolateral areas of T2 round, strongly separated by incomplete strongly converging or S-shaped crenulate furrows and complete sharp crenulate margin delineating not elevated subparallel-sided median area. Dorsolateral S-shaped impressions of T2 absent or deep; spiracle located in middle of T2 near its margin. Suture between T2 and T3 deep, curved, and crenulate. Apical margins of T3-T6 with deep or shallow, weakly crenulate transverse subapical grooves. Ovipositor sheath 1.0-1.2 × and 0.32-0.38 × as long as hind tibia and fore wing, respectively. Sculpture and colouration. T2-T3 sometimes granulate-rugulose to granulate. Body tricoloured. Ground colour of head, mesonotum and metasoma pale yellow; vertex, three patches on mesoscutum, propodeum reddish brown to brown; face, most of mesosoma and legs, and metasoma dorsally yellow to brownish yellow. Tegulae yellowish brown; pterostigma yellow with brown anterior side and patch apically; wing veins yellowish brown; wing membrane weakly darkened, yellowish basally.

Male. OOL 1.7-1.8 × Od; POL 1.3-1.7 × Od; OOL 1.1-1.2 × POL. Face 1.6-1.7 × as wide as high. Longitudinal diameter of eye 2.9-3.2 × height of malar space (anterior view). Malar space 0.75-0.80 × base of mandible. Antenna 0.80-0.95 × as long as fore wing. Vein 2-SR+M 1.2-1.7 × vein m-cu. Fifth segment of hind tarsus 0.8-1.0 × as long as second segment, 0.5-0.6 × as long as hind basitarsus. Median length of T1 0.75-0.95 × its apical width. T2 medially 1.1-1.3 × as long as T3; basal width of T2 1.7-2.0 × its median length. Median area of T2 weakly elevated. Colouration similar to female, but more contrasting, because of pale yellow patches on scutellum, pronotum, and T1-T2, and brown patches on vertex, mesopleuron, propodeum, and posterior metasomal tergites. Pterostigma brown with large yellow patch basally.

Figures

Figure 6. Sculptolobus madagascariensis (Szepligeti, 1913) (A-K lectotype, female, MNB) and S. somnialis (Szepligeti, 1913), comb. nov. (L, N-P lectotype, female, HNHM M, Q-S female, RMNH) A, M habitus, lateral view B head, lateral view C head, dorsal view D propodeum, dorsal view E head, anterior view F, L fore wing G mesosoma, lateral view H, S T 1, dorsal view J, R mesosoma, dorsal view K, O metasoma, dorsal view N head and mesosoma, lateral view P, Q head and mesosoma, dorsal view. Scale bars: 1 mm (A, L, M); 0.5 mm (B, C, E, G, J, K, N-S); 0.25 mm (D, H, I).

Figure 7. Sculptolobus somnialis (Szepligeti, 1913), comb. nov. (A-C, E, G, H female, RMNH D, I male, RMNH F female, ZISP) and S. suavis (Szepligeti, 1918), comb. nov. (J-R lectotype, female, MNB) A, L head, anterior view B head, ventrolateral view C head, lateral view D, G metasoma, dorsolateral view E, N head and mesosoma, lateral view F, H, R metasoma, dorsal view I, J habitus, lateral view K head, dorsal view M labels O T 1, dorsal view P fore wing Q propodeum, dorsal view. Scale bars: 1 mm (I, J); 0.5 mm (D-H, N, P, R); 0.25 mm (A-C, K, L, O, Q).