Key to the Neotropical species of Nervijuncta

1. Eye-bridge complete; wing with a single light mark in the middle of the wing amidst a dark membrane (Fig. 4); gonostyli with a wide basal enlargement (Figs 5-6) (southern and southeastern Brazil) .................... N. laffooni Lane Eye-bridge incomplete; wing with two transverse light markings amidst a dark membrane (Fig 9); gonostyli not conspicuously enlarged basally (Fig. 10-11) (Chile and southern Argentina) ................................... N. conjuncta (Freeman)