Stenoma thespia is a moth of the Depressariidae family. It is found in French Guiana. The wingspan is 27-28 mm. The forewings are pale violet-fuscous, with a whitish gloss and with the costal edge ochreous-whitish. The basal third of the wing is faintly and obscurely clouded with darker. There are two rather dark fuscous dots transversely placed on the end of the cell and a small violet-fuscous spot on the middle of the costa, where a faint irregular curved fuscous shade runs to three-fourths of the dorsum. A large triangular violet-fuscous spot is found on the costa towards the apex, where a somewhat curved series of cloudy fuscous dots runs to the dorsum before the tornus. There is a terminal series of dark fuscous dots. The hindwings are whitish-ochreous, in females with the dorsal half