Apterogyna similis Soliman & Gadallah

Soliman, Ahmed M., Gadallah, Neveen S., Al-Shahat, Ahmed M. & Pagliano, G., 2015, The genus Apterogyna Latreille, 1809 in Egypt, with three new species (Hymenoptera: Bradynobaenidae: Apterogyninae), Zootaxa 3905 (2), pp. 209-220 : 218-219

Apterogyna similis Soliman & Gadallah , sp. nov.

( Figs 28−32 )

Material examined. Holotype ♂: Egypt, Nahia, Giza [30°02'54"N, 31°07'40"E], 23.xi.1932 (leg.?) [ CUE].

Description. MALE (holotype). Body length 11 mm. Colour. Black, except antenna, pronotum, metapleuron, posterior two-thirds of scutellum, tegula, metanotum, propodeum, metapleuron, legs, first metasomal segment and terminal hook ferruginous red; mandible ferruginous on basal third, reddish brown apically; palpi dark brown; scutellum and mespleuron partly red; T3−T7 chestnut posteriorly. Wings hyaline with yellow veins and pterostigma brown. Fore tibial spur reddish, mid and hind ones waxy white; eye black. Pubescence. Body including legs densely clothed with erect to recumbent white setae, such setae masking background of face, clypeus, pronotum and anterior half of mesoscutum; T1, T2 with well defined tuft of dense long white setae apicomesally ( Fig. 31 ); metasomal segments 3−6 with well-developed apical fringe of white setae.

Head. In dorsal view slightly narrower than pronotum (0.8 ×) and convergent behind eyes; vertex punctulate, with a smooth area adjacent to each ocellus, with a distinct polished tubercle posterolaterally closer to eye than lateral ocellus; ocellocular distance (OOD) as long as interocellar distance (IOD); malar space 0.35 × LED; mandible slender, with very small subapical tooth. Antenna long, 2 × as long as mesosomal length; scape subquadrate, 0.7 × as long as its maximal width, distinctly shorter than F1 (0.2 ×); F1 distinctly long, 5 × as long as its width, slightly longer than F2 and 1.25 × as long as F3.

Mesosoma . Pronotum declivous in front, transversely ridged posterolaterally, with strongly concave posterior margin and broadly rounded humeral angle; basal half of mesoscutum and scutellum densely punctate, the former with median longitudinal polished ridge extending along its anterior half; notauli complete, strongly divergent anteriorly ( Fig. 29 ); tegula smooth and bare; propodeal dorsal face areolate, posterior face abruptly declivous, shallowly concave and smooth ( Fig. 30 ); hind coxa with strong lamina on outer surface. Mesopleuron punctatereticulate, with smooth area in front of mid coxa. Fore wing with closed brachial cell; hind wing with eight hamuli. Front femur swollen distally; hind inner tibial spur slightly shorter than basal tarsomere.

Metasoma. T1−T3 moderately reticulate-foveate ( Figs 31, 32 ); T4−T7 finely punctate; S1 with distinct transverse carina posteriorly; S2, S3 densely punctate-reticulate, the latter with transverse smooth area subapically; S4−S6 with transverse smooth ridge widened medially, become finely punctate-reticulate laterally; S6 with a group of short reddish bristles laterally; S7 with transverse smooth ridge basally and puncticulate apically.

FEMALE unknown

Distribution. Egypt: Giza.

Remarks. This species closely resembles Apterogyna olivieri but differ in the following: with red pronotum and metapleuron, while scutellum and mesopleuron are partly red (all are entirely black in A. olivieri ); mesosoma densely clothed with recumbent setae masking background beneath particularly on pronotum and anterior half of mesoscutum ( Figs 28, 29 ) ( mesosoma with scattered erect setae in A. olivieri ( Fig. 20 )); propodeal posterior face smooth ( Fig. 30 ) (reticulate-punctate in A. olivieri ); metasomal T1 and T2 with well-developed tufts of whitish setae apicomesally ( Fig. 31 ) (ill-defined in A. olivieri ( Fig. 22 )); metasomal T3 densely and deeply punctate ( Fig. 32 ) (with scattered superficial punctures in A. olivieri ( Fig. 22 )).

Etymology. The name similis (Latin, adjective) refers to the similarity of this species with A. olivieri Klug.

Figures

FIGURES 28 – 32. Apterogyna similis sp. nov., holotype, ♂: 28. Habitus, dorsolateral view; 29. Mesosoma, dorsal view; 30. Propodeum, dorsal view; 31. T 1 – T 2; 32. T 3.

FIGURES 16 – 22. Apterogyna olivieri Latreille. 16. Habitus, dorsal view ♀; 17. T 1 – T 2 ♀; 18. Head and mesosoma, lateral view ♀; 19. Mesosoma, lateral view ♂; 20. Mesosoma, dorsal view ♂; 21. T 1 – T 2 ♂; 22. T 3 ♂.