Stenoma catharmosta is a moth of the Depressariidae family. It is found in Guyana and Surinam. The wingspan is 16-19 mm. The forewings are light pinkish-ochroous with an irregular rounded blotch of blackish suffusion extending along the dorsum from one-fourth to three-fourths, and reaching half across the wing. The second discal stigma is blackish and there is a strongly curved series of blackish dots from two-thirds of the costa to the tornus, indented above the middle, as well as a series of blackish marginal dots around the posterior part of the costa and termen. The hindwings are light grey, strewn with blackish hairscales.