Last modified: Feb. 24, 2023, 12:30 p.m.
A very rare and local species in Belgium, hitherto only known from the southern part of the country.
The initial gallery is long and very narrow with a thin black central frassline. Further on the mine widens into a elongated blotch where the black frass is scattered.
See also bladmineerders.be
The cocoon is pale brown.
The adults are on the wing in May and again in August.
The larvae mines the leaves of: Potentilla, Fragaria and Agrimonia.