Wing span of 15-16 mm. Forewings grey-brown with white triangle in middle of posterior edge. Hind wings are uniformly grey. 36-40 antennomeres.
Up to 10 mm long. Cephalic capsule is brown and the body is yellowish-white.
White and elliptical, laid singly on the surface of leaves..
Europe, North America and northern parts of Asia.
All members of the Allium family.
Young larvae feed within galleries in leaves, while later instars feed on the inner yellow leaves. Galleries and longitudinal grooves are signs of infestation in leek while windows in leaves are signs in onion.