Last modified: April 13, 2021, 12:37 p.m.
A very rare and local species in Belgium. Hitherto only known from the southern part of the country. Seems to have disappeared from several of the former locations. Vulnerable.
The adults fly in one generation a year; in the south of Europe it can already be on the wing from April on, in Belgium however mostly from July to halfway August.
The larva lives on several species of Gramineae like Brachypodium, Calamagrostis and Elymus. Hibernates as a small larva in a cocoon attached to the food plant.