Belonogaster turbulenta Kohl, 1894

Belonogaster turbulenta Kohl, 1894 View in CoL

( Fig. 8 View FIGURE 8 )

Belonogaster turbulentus Kohl, 1894: 323 (key), 330, 337, pl. 15 fig. 87, pl. 16 fig. 101, pl. 17 fig. 147, ♀ – “ Westafrika : Sierra Leone ” (NHMW).

Material examined. GABON: Ogouuè Ivindo, P.N. Ivindo, Ipassa , 0.512333 12.802556, 3–14.XII.2013, leg. Carlo Massarone, 2♀ ( MSVI); Parc national des Monts de Cristal, Kinguélé, 0.440278 10.273889, 230 m, 19–30.XI.2019, leg. Daniele Sechi, 1♂ 3♀ GoogleMaps ( 1♂ MSVI; 3♀ DSCI) .

Description of male (hitherto unknown). Habitus in Figs 8A–B View FIGURE 8 . Body length 17.0 mm; fore wing length 15.5 mm. Differing from female as follows: head ( Fig. 8C View FIGURE 8 ) in frontal view 0.8× as long as wide; inner eye margin weakly converging below; clypeus less convex and with much shorter free apical part, apical margin widely subtriangular with broadly rounded apex, shortly exceeding lateral lobes; face entirely covered by dense golden setae, longer on clypeus; antennal toruli much closer to inner eye margin than to clypeal margin; gena slightly wider ventrally, 0.4× as wide as eye in lateral view; scape slightly enlarged in the middle, 4.8× as long as apically wide; F1 nearly parallel-sided, 4.7× as long as wide, 1.85× as long as F2, 0.9× as long as F2+F3; F2–F7 longer than wide and becoming progressively shorter and thicker; F8–F9 much narrower and longer than F7; F10 longer than F9, slightly concave on lateral face, evenly curved and slightly expanding in basal fourth, then parallel-sided, apex obliquely truncate; tyloids on all flagellomeres, irregular fine carina on whole length of F1–F2, stronger carina on whole length of F3–F5, strong carina absent basally and becoming higher apically on F6–F9, thin carina on whole length of F10 except extreme base ( Fig. 8D View FIGURE 8 ); T1 proportionally narrower and less expanded behind spiracles, 6.2× as long as maximum width; basal petiole of T2 shorter, 1.9× as long as wide; T7 with subtruncate apex; S7 with subtruncate apical margin and medially flattened; longer hind tarsi. Genitalia in Fig. 8E View FIGURE 8 . Ferruginous-orange; following parts darkened to black: inner margin of mandible, vertex, basal petiole of T2, hind tarsi; following parts pale yellow: outer face of mandible, broad ventral margin of clypeus, suffused narrow line along inner margin of eye not reaching ocular sinus.

Distribution. Sierra Leone, Gabon *, Democratic Republic of Congo, Congo.

Notes. The examined specimens, all from Gabon, show a certain variability in vestiture and sculpture: while some females completely agree with the description provided by Richards (1982), the other females and the male show more punctures on the head and the mesosoma and longer darker setae on the whole body.All female specimens show many dark bristles arising between the pubescence on the metasoma starting from T2 and S2.