Stenoma arridens is a moth in the Depressariidae family. It was described by Meyrick in 1931. It is found in French Guiana. The wingspan is about 17 mm. The forewings are light violet-brownish with a rounded basal patch of whitish-grey suffusion, narrowed on the dorsum. The plical stigma is obscurely darker, posteriorly edged by two or three whitish-grey scales, the second discal forming a small round orange-tinged spot edged whitish-grey except beneath, an irregular whitish-grey line from the middle of the costa to the anterior edge of this. The costal edge is pale grey-yellowish on the posterior half and there is a terminal series of whitish-grey dots, preceded on the apical area by a whitish-grey macular line. The hindwings are blackish-grey.