Stenoma mundula is a moth of the Depressariidae family. It is found in French Guiana. The wingspan is 16-18 mm. The forewings are pale violet-grey with the costal edge yellowish-white. There are three cloudy dark fuscous transverse lines, the first from one-fourth of the costa to the middle of the dorsum, the second from the middle of the costa to four-fifths of the dorsum, both almost straight. The stigmata are obscurely indicated as dots on these, the third slender and curved, from a small spot on the costa at four-fifths to the dorsum before the tornus. There is a marginal series of blackish dots around the apex and termen. The hindwings are rather dark grey.