Last modified: Feb. 27, 2021, 2:31 p.m.
A fairly common species throughout Belgium.
Greenish with light green head.
At first a very inconspicuous mine parallel with a leaf vein, later widening into a small blotch. Later instars leave the mine and construct a cone by bending the leaf edge downwards into a cone. Three such cones succeed each other each one a little larger than the former one.
See also gracillariidae.net and bladmineerders.be.
Pupation takes place in a yellowish cocoon at the underside of a leaf. The adults hibernate.
The adults fly in one generation per year: from early July, and after hibernation till May.