Stenoma methystica is a moth in the Depressariidae family. It was described by Meyrick in 1930. It is found in Brazil (Para). The wingspan is about 13 mm. The forewings are pale greyish-ochreous with the costal edge suffused fuscous on the basal third, reddish-brown on the median third, then suffused dark grey around the apex, the costal third irregularly suffused light red-brownish to the end of the cell. The second discal stigma is small and grey, some irregular greyish clouding between this and the dorsum. There is a curved series of blackish-grey dots from beneath costa at two-thirds to the tornus. The hindwings are grey.