Stenoma harpoceros is a moth in the Depressariidae family. It was described by Meyrick in 1930. It is found in Brazil (Para). The wingspan is about 27 mm. The forewings are greyish-ochreous or pale fuscous with the costal edge pale from one-sixth to two-thirds, beneath this a grey shade, expanded into a suffused grey subtriangular blotch before the middle of the costa. The second discal stigma is small and dark grey and the plical minute. The hindwings are light grey.