Last modified: Aug. 28, 2020, 1:08 p.m.
A common species in the northern half of Belgium, less common in the southern part.
See also bladmineerders.be
The adults fly in two generations a year: from end Apral till the end of June, and from early July till mid September. They come to light.
The larva makes a conspicuous, whitish blotch mine in Phalaris arundinacea, the summer brood also in Phragmites. Pupation takes place on a leaf or stem, under a gurdle; often on the mined leaf, just below the mine.