Last modified: Nov. 6, 2023, 4:30 p.m.
A local and rare species throughout Belgium, most frequently observed in the northern provinces.
Native
Hibernates as a part-grown larva in a stem of the food plant, near the base. Pupates in a tough cocoon among leaves at the base of the plant.
The adults are active from dusk onwards and later come to light.
The adults fly from mid-May till mid-July in one generation.
The larva lives in the stems of Calamagrostis spp.