Last modified: Nov. 28, 2024, 11:41 a.m.
A very rare species in Belgium.
Native
The monophagous larva lives in a mine on Inula conyzae. The first mine starts with a long and narrow corridor and later becomes a blotch with little or no frass visible. The larva can leave its mine and start another one and that explains why there are mines without a corridor.
Pupation outside the mine in a spindle-shaped reticulate cocoon, often at the underside of a leaf close to the midrib.
The adults fly in two generations a year in June and July and again during August and September and hibernate over winter, reappearing the following spring.