from many areas in Belgium, but never common.
young larva makes a circular blotch mine in the leaves of Vaccinium
myrtillus, Rubus chamaemorus, Swida or Prunus
spp. Later on it constructs a flat case cut from the blotch and drops
to the ground. This first case is replaced by a bivalved case made from
two oval pieces of dead leaf. The caterpillar feeds on dead leaves.
Pupation in the case attached to some object on the ground.
adults fly from mid May till the end of June. The moths are active
during the day; they prefer bright sunshine.
Limburg, Kinrooi, 21 May 2005.
(Photo © Maarten Jacobs)