Last modified: March 8, 2021, 1:36 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.
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.
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 late June till September.