Last modified: July 13, 2021, 6 p.m.
A very rare species in Belgium, but probably overlooked.
The larva mines the lower stems of different grasses. It frequently changes stems.
It pupates in a white cocoon spun in a folded leaf or leaf-sheath or on a stem of the food plant or other grasses.
The adults can be seen flying during early afternoon sunshine. They occasionally come to light.
The adults fly in one generation a year from mid June towards September.
The larva mines the lower stems of different grasses like: Alopecurus, Bromus, Dactylis glomerata or Poa.