The Diapriidae

Median keel of propodeum strongly developed, pointed, point often directed backward (fig. 60); postmarginal vein in forewing moderately to distinctly developed (fig. 60); basal vein in forewing nonarcuate, slanted at acute angle toward submarginal vein (fig. 60); body often light colored; Nearctic and Neotropical; [f] (part)

Median keel of propodeum only moderately developed, rudimentary, or absent (fig. 85), very rarely pointed; postmarginal vein in forewing rudimentary; basal vein in forewing moderately to strongly arcuate (fig. 85); body usually blackish; Nearctic and Neotropical [mf] (part)