B. Odontosphaeropyx (modified from Zettel, 1990)

1 Vein 3-SR of fore wing subequal or longer than vein r; carapace oval in dorsal view, less than 2x longer than wide........ 2

- Vein 3-SR of fore wing shorter than vein r; carapace elongate in dorsal view, more than 2x longer than wide............. 4

2(1) Vein 3-SR of fore wing longer than vein r; carapace 1.4x to 1.7x longer than wide.................................. 3

- Vein 3-SR of fore wing subequal to vein r; carapace 1.7x longer than wide. 11.7 mm; Kenya ................................................................................................ O. maximus (Zettel, 2002) comb. nov.

3(2) Mesosoma blackish and carapace yellowish, 1.4x longer than wide. 8.5 mm; South Africa, Zambia, Zimbabwe ................................................................................ O. fulviventris (Brues, 1924) comb. nov.

- Mesosoma and carapace yellowish, 1.7x longer than wide. 8.3 mm; South Africa (Figs 76–79)... O. ruficeps Cameron, 1910

4(1) Thorax rufous-orange, coxae brown to dark-brown; carapace black and second tergite with large transverse patch basally, first tergite basally rugulose-reticulate to finely reticulate apically, covered by dense short whitish setae, carapace 2.3x longer than wide; Nigeria, D.R. of Congo (Figs 48–51)............................... O. flavifasciatus (Zettel, 1990a) comb. nov.

- Thorax black, fore and mid coxa mainly whitish, fore coxa black; carapace black, color of second tergite variable, sculptures on first tergite variable, length of carapace more than 2.5x longer than wide; Madagascar ............................ 5

5(4) Fore and mid coxa and trochanters white (Fig. 27); first tergite 1.2x as long as apical width, with two long dorso-lateral carina (reaching the middle of tergum), longitudinally rugose (Fig. 25); vein 2-SC+R of hind wing short; clypeus ventrally with blunt median tooth (Fig. 26); second tergite with small lateral and one median semicircular patch basally, carapace 4.3x longer than

wide (Fig. 25)................................................................. O. leucocoxus Braet, sp. nov. - Fore and mid coxa whitish, more or less largely brownish basally, fore and mid trochanters whitish (Fig. 69); first tergite as long as apically wide, with two short dorso-lateral carina, rather areolate rugulose; vein 2-SC+R of hind wing long; at most; clypeus ventrally with acute median tooth (Fig. 74); second tergite red-brownish, carapace 2.8x longer than wide (Fig. 75)................................................................................... O. gracilis Braet, sp. nov.

Additional illustrations of O. fulviventris and O. flavifaciatus can be viewed on the WaspWeb web site housed at the Iziko institution (http://www.waspweb.org/) (accessed 31 May 2012).