A rare species in Belgium, probably overlooked.
larva feeds on Lotus and
initially it makes a long sinuous narrow nepticulid-like gallery with
much frass in a broad central line. It ends in a oval blotch, usually
near the margin of the leaf which the larva excises for use as its
first case. Later the complete greyish brown case is about 6mm
long. Pupation in the case, usually attached low down on the food
plant or nearby vegetation.
adults fly in one generation a year; onwards from late June towards early August. The adults
come rarely to light.
Liège, Ben-Ahin, Lovegnée-Bosquet, 22 May 2010.
bag on Lotus
(Photo © Jean-Yves Baugnée)