In this study, first description of the larva of Nilotonia (Dartia) vietsi Bader & Sepasgozarian, 1980 was given which is known only from Iran and Turkey. So far, in this genus only the description of larva of Nilotonia (Dartiella) longipora (Walter, 1925) has been given. The similarity and differences between larvae of these two species were evaluated.