Found in the south of Belgium and at the sea coast. In coastal areas, a lighter form lacking the plumbeous edging is not rare (see More pictures).

The larva lives in the roots and the rootstock of Picris hieracioides, P. echioides, Hieracium, Crepis or Inula conyza. The larva hibernates.

The adults have been observed from May till the end of August. They are active in sunshine.