A very rare and local species in Belgium. Known for a while in the southern part of the country, with a stronghold in the province of Namur where it is locally not rare, and recently discovered in Flanders in the province of Limburg (2005) and province of Antwerpen (2007).

The larva makes a very typical brown blotch with fine concentric arcs on the upperside of Quercus leaves, sometimes also on Castanea. Pupation takes place in a round chamber constructed in the larval feeding place. The pupa hibernates.

The adults fly mainly in June and are taken occasionally at dusk, but more often encountered as mines onwards from August till November. During favourable years, a second generation develops of which the moths are on the wing in August. The moths come to light.