The Diapriidae

apical rim of A1 not excavate ventrally, rim not produced in flaps (fig. 55b); clypeus distinctly wider than long, anterior margin not flexed; cheek not striate (fig. 56); Valdivian [mf]

apical rim of A1 deeply excavate ventrally, rim produced in flaps (e.g., fig. 55a); clypeus slightly elongate, with anterior margin projecting and flexed; cheek often with short fan of striae (fig. 53); Valdivian [mf]