Gonionota excavata is a moth in the family Depressariidae. It was described by Clarke in 1964. It is found in Mexico.[1]
The wingspan is about 22 mm. The forewings are light brown shaded with fuscous costad and with a faint violaceous tinge in the tornal area. The basal patch is buff yellow mixed with reddish ocherous, extending to two-fifths. The costal margin of the basal patch is broadly edged with ground color for nearly its entire length. In the cell, at the outer edge of the basal patch, is a blackish spot and there are several reddish ocherous blotches in the center of the wing. At the apical third, the costa is excised and bordered with white. There is a series of white scale patches around the termen, preceded by ill-defined fuscous spots and the dorsal margin is edged with fuscous and with a group of blackish scales at the base of the dorsum. The hindwings are ocherous white shading to brownish ocherous apically. In the anal area, there are scattered fuscous scales.[2]