Stenoma neopercna is a moth in the Depressariidae family. It was described by Meyrick in 1930. It is found in Brazil (Para). The wingspan is 25-26 mm. The forewings are violet-fuscous with the costal edge ochreous-yellow and with some slight irregular irroration of pale grey scales, some accompanying obscure small dark grey stigmata, hardly defined. A faint darker curved subterminal shade precedes some pale grey irroration or suffusion along the termen and there are also some indistinct dark grey terminal dots. The hindwings are dark grey.