Stenoma dryocosma is a moth in the Depressariidae family. It was described by Meyrick in 1918. It is found in the Guianas and Brazil. The wingspan is 19-20 mm. The forewings are ochreous-brown, more or less suffusedly and irregularly mixed fuscous anteriorly and with a triangular dark brown or dark fuscous postmedian costal blotch reaching somewhat more than half across the wing, including an irregular dentate transverse brownish-ochreous streak, the blotch edged posteriorly with white suffusion in the disc. The terminal area beyond this forms a broad grey band irregularly sprinkled blackish-grey and whitish and there are small dark grey marginal spots around the posterior part of the costa and termen. The hindwings are grey irrorated dark fuscous.