Stenoma byssina is a moth of the Depressariidae family. It is found in Brazil (Amazonas), Venezuela, French Guiana, Guyana, Trinidad and Paraguay. The wingspan is 20-30 mm. The forewings are pale green with a faint grey dot at the end of the cell and two triangular fuscous spots on the costa, one atmidpoint and one at the apical three-fourths. From the latter extends an outwardly curved transverse line of grey spots to the dorsum before the tornus. The dorsum is edged with grey and there is a grey spot in the fold surrounded with irregular grey suffusion. The hindwings are pale yellow, more or less heavily overcast with grey in the anal area.