Last modified: Sept. 16, 2023, 10:13 a.m.
A rare species in Belgium, most frequently observed along the coast and in the northern provinces.
Native
Hibernates as a part-grown larva in a stem of the food plant. Pupates in a tough cocoon among plant debris.
The adults are active from dusk onwards and later come to light and also on sugar.
The adults fly from mid-June till late August in one generation.
The larva lives in the stems of Calamagrostis epigejos.