Last modified: Jan. 14, 2024, 12:21 p.m.
A not so common species in Belgium. Adults are very secretive and probably underrecorded, but it's believed that it may be fairly common wherever the food plants occur. More observations in the north of the country.
Wingspan 10–12 mm; Head and palp yellow-orange, palp paler than head; thorax violet-brown, tuft of tegula long. Forewing violet-brown, slightly mottled orange brown; stigmata usually invisible; costal and toral spots pale orange, connected by thin patch of orange brown scales.
Head semi-translucent with brown mouthparts, prothoracic plate semi-translucent; abdomen dull whitish, prolegs absent.
The larva feeds on the seeds of the food plant and it hibernates in a narrow tube which is made by spinning the seeds together. There are no external feeding signs. Pupates in a tough silken cocoon mixed with frass and seed fragments.
The adults become active from late afternoon and later come to light.
The adults fly in one generation a year from mid-July till late September.
It inhabits in suitable localities where the food plant occurs and is found in a wide range of habitats.