A not so common species in Belgium. During the last two decades, the species is spreading out. Probably underrecorded, because of the similarity to the related C. alchimiella.

The larvae feed on Quercus, rarely on Fagus. When young, in a short gallery at the underside of a leaf, becoming a blotch and later in 2 or 3 successive cones, rolled down at the top of a lobe. Pupation under a yellowish membrane on the underside of a leaf. In contrast with  C. alchimiella, this species has also a generation of larvae during May-June. 

The adults fly in several generations a year: onwards from April till November. They come to light.