Last modified: Jan. 13, 2019, 8:31 a.m.
A very rare and local species in Belgium. Hitherto only known from the southern part of the country. Vulnerable.
The adults fly in one generation a year; onwards from mid May till August.
The larva lives on several species of Gramineae like Brachypodium, Calamagrostis and Elymus. Hibernates as a small larva in a cocoon attached on the food plant.