Monochroa suffusella, the notch wing neb, is a moth of the Gelechiidae family. It is found from Fennoscandia to the Pyrenees and Alps and from Ireland to Romania. In the east, the range extends to Japan. The habitat consists of bogs, fens, swamps and salt-marshes. The wingspan is 10–12 mm. The forewings are pale luteous (yellow), suffused with greyish fuscous. The hindwings are griseous (mottled grey). Adults have been recorded on wing from June to July.