rather rare species in Belgium, mainly observed in the south.
young larva lives in the seeds of Cardamine pratensis,
but probably also on other foodplants like Alliaria petiolata,
Sisymbrium officinale, Barbarea
vulgaris or Cakile. Later on it
constructs a flat, elongated-oval, bivalved case from which it feeds on
the lower leaves of the same plants. Pupation in the case. The pupa
adults fly in May and June. They fly in the sunshine.
Namur, Lessive, 16 May 2005.
(Photo © Chris Steeman)