Last modified: Nov. 15, 2023, 9:46 a.m.
A very common species throughout the whole of Belgium, sometimes in large numbers.
Native
The larva lives in a silken gallery at the base of the stem. The larva hibernates. Pupation in a firm silken cocoon just below the surface of the soil.
The adults are easily disturbed by day and later come to light.
The adults fly from mid-May till the end of August, occasionally later.
The larva lives on Deschampsia cespitosa or other grasses.