Last modified: April 23, 2019, 12:44 p.m.
A very rare species in Belgium.
See also bladmineerders.be
The adults fly in one generation a year: from May till mid June. They come to light.
The larva makes a gradually widening transparant gallery from top of leaf towards the base of Poaceae like Brachypodium sylvaticum, Festuca, Poa, Elymus repens etc...