Last modified: Jan. 24, 2020, 10:59 a.m.
A common species in the northern part of Belgium, elsewhere rather rare. Found throughout Belgium were the food plant grows.
The mine starts as an irregular gallery close to a vein or along the midrib and in this gallery the larva constructs a silk-lined gallery which serves as a shelter when not feeding. From this it mines several feeding branches in all directions.
See also bladmineerders.be
When fully-fed, the larva leaves the mine and hibernates in a white elongate cocoon and pupates in the same cocoon in plant debris on the ground.
The species hibernates in the larval stage. The adults fly around the foodplant at dusk and later come occasionally to light.
One generation a year: from late May till July.