Last modified: Oct. 3, 2021, 4:28 p.m.
A common species in Belgium.
Initialy the mine is a tightly wound spiral, this part of the mine is blackish violet colored, later the mine straightens and here the staining is absent.
After leaving the mine, the larva feeds externally and eats small windows from below.
See also bladmineerders.be
Pupates in a pale ribbed cocoon spun on a leaf or amongst leaf litter.
The adults are active in the evening sunshine and later come to light.
The adults fly in one generation a year: from early June towards late July.