rare species in Belgium, not often observed. It used to be more
common in the past.
larva feeds between two leaves of Fagus spun together. It
pupates in the larval feeding places and hibernates as a pupa.
adult flies from late May till the end of June; in favourable years,
there is a second generation in August. The adults fly at sunrise
and in sunshine in the afternoon and evening. They come to light.
Antwerpen, Ranst, 05 June 2004.
(Photo © Leo Janssen)