A local and rare species in Belgium, formerly more widespread but now almost exclusively restricted to the limestone area.

The larva feeds in a gallery or web, spinning the flowers and seeds to the main stalk on Rhinanthus, Melampyrum pratense, Solidago virgaurea or Pedicularis. It hibernates in its cocoon and pupates in a tough semitransparent cocoon.

The adults fly in June and July. They are active at dusk and come to light