The Diapriidae

ocellar triangle situated distinctly in front of ocular zone (fig. 82); pronotum medially (including cervix) as long as mesoscutum; metasoma past petiole with very short trapezoidal tergite (fig. 82, arrow) followed by large tergite (minute, 1 mm long; forms with very long marginal cilia on wings); Neotropical

ocellar triangle situated in or slightly behind ocular zone (fig. 1) (ocelli absent in some short-winged or wingless species); pronotum medially (including cervix) distinctly shorter than mesoscutum; metasoma past petiole beginning with very large tergite