Last modified: Jan. 21, 2020, 9:55 p.m.
A very rare species in Belgium, but probably overlooked in many places.
See also bladmineerders.be
The adults fly in two generations a year during May and August.
The young larva makes a blotch mine in the leaf tip of different species of Hypericum. The larva is capable to restat a new leaf when the old leaf is mined out.