Wingspan 15-20 mm.
One of the 'longhorn' moths, the male has antennae three times the length of the forewings, the female around half this length. The wings have a relatively plain bronzy sheen.
Like other members of the genus, the larvae feed at first on seeds and later on leaves or leaf-litter, mainly of field scabious (Knautia arvensis).
Occurring in the south of England and East Anglia, the moths fly in June and July during the day.