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.
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.
adults fly in several generations a year: onwards from April till
November. They come to light.
Luxembourg, Nassogne, 26 April 2007.
(Photo © Chris Steeman)