The Diapriidae

stigmal vein in forewing distinctly elongate, usually subequal in length or longer than marginal vein (figs. 48, 50); apex of forewing often subtruncate (fig. 50) to emarginate-cordate; anterior scutellar pit single, large and deep (fig. 49), very rarely with few longitudinal keels on bottom; Nearctic and Neotropical [mf] (part)

stigmal vein in forewing short, shorter than marginal vein (figs. 53, 56, 60, 81, 85); apex of forewing rounded