Last modified: July 26, 2019, 12:11 p.m.
A fairly common species throughout Belgium.
See also bladmineerders.be
The adults fly in two generations a year: from June till August, and again from October till April of the next year. They hibernate.
The larva lives in a slight silken web on the underside of a leaf of Heracleum sphondylium, Pastinaca, Anthriscus or Angelica, causing the upperside to colour brownish. Often, several larvae occupy the same leaf. Pupation takes place in an open network cocoon amongst detritus on the ground.