The Diapriidae

Female A13 moderately to distinctly larger than A12 (fig. 81); male A3 distinctly shorter than A4; marginal vein in forewing distinctly longer than stigmal vein; Nearctic and Neotropical [mf] (part)

Female A13 subequal to A12 in size or even smaller; male A3 subequal in length to A4 or even longer; marginal vein in forewing subequal in length to stigmal vein, rarely only slightly longer