1	Ovipositor curved up at apex and considerably modified (Fig. 9A)	Neoheterospilus Beleokobylskij
–	Ovipositor straight at apex, not modified	2
2(1)	Hind coxa without a distinct antero-ventral basal tubercle or tooth (Fig. 10D)	Pioscelus Muesebeck & Walkley
–	Hind coxa with a distinct antero-ventral basal tubercle or tooth Fig. 10C)	3
3(2)	Vertex sharply angled laterally near upper eye margin (Fig. 9B)	Paraheterospilus Marsh, gen. n.
–	Vertex not sharply angled laterally near eye	Heterospilus Haliday