Last modified: Nov. 14, 2023, 2:52 p.m.
A common species throughout Belgium, sometimes in large numbers.
The larva feeds in a vertical silken gallery along the lower part of a stem. The larva hibernates. Pupation in a silken frass-covered cocoon.
The adults are easily disturbed during the day and later come to light.
The adults fly from the beginning of June till late September, occasionally later. Most abundant in July and August.
The larva feeds on Festuca ovina or other grasses.