Couplet 5.
forewing with glassy, depigmented submarginal vein (fig. 89), apical emargination and median fold not developed; occiput rounded, not steplike (fig. 89);male A3 distinctly shorter than A4; Nearctic [mf]
1.89
forewing at most with rudiment of glassy depigmented submarginal vein (fig. 37), apical emargination and median fold present (all / and some ?) (fig. 37), or absent (some ?); occiput sharply angular, steplike (fig. 37); male A3 subequal to A4 in length; Nearctic and Neotropical [mf]
1.37