Stenoma caesia is a moth of the Depressariidae family. It is found in Guyana. The wingspan is 16-18 mm. The forewings are greyish-purple with the costal edge whitish-ocbreous and with fine whitish-ochreous lines on the margins of the cell from base to about one-third. There is a rather broad whitish-ochreous median fascia, hardly reaching the costa, the anterior edge suffused, the posterior rather convex in the disc. There is a faint darker curved subterminal shade, preceded and followed by slightly lighter suffusion, in males, the terminal area is tinged with whitish-ochreous. The hindwings are grey.