The objective of the present work is to compare two measurement techniques: the distance between genae, used in the method of Dyar (1890) and the distance between frontal setae, used by Podoler (1978). The first one is commonly used to determine the larval instar in Lepidoptera. We measured cephalic capsules and the distance between frontal setae of Copitarsia incommoda. Based on our results, we concluded that Podoler's technique is more precise than that of Dyar.
