Last modified: April 12, 2021, 2:51 p.m.
A very rare and local species in Belgium. In coastal areas, a lighter form lacking the plumbeous edging occurs.
Native
The adults have been observed from May till the end of August. They are active in sunshine.
The larva lives in the roots and the rootstock of Picris hieracioides, P. echioides, Hieracium, Crepis or Inula conyza. The larva hibernates.