Last modified: Feb. 19, 2021, 2:30 p.m.
A rare species throughout Belgium.
The larva is yellow.
The cocoon is reddish brown.
The larva makes a leafmine on the food plant. The mine starts in the leaf blade and the initial corridor filled with red-brown frass, follows the leaf margin and then expanding abruptly into a blotch with the frass black coloured. Pupates in a reddish brown cocoon, spun on the surface of the ground.
The adults fly in one or perhaps two generations a year: during late May and June.
The larva lives on Crataegus or Mespilus.