An uncommon species in Belgium.
monophagous larva lives in a mine on Inula conyzae.
The first mine starts with a long and narrow corridor and later
becoming a blotch with little of no frass visible. The larva
can leave its mine and start another one and that explanes why there
are mines without corridor. Pupation outside the mine in a
spindle-shaped reticulate cocoon, often at the underside of a leaf
close to the midrib.
adults fly in two generations a year; in June and July and again
during August and September and hibernate over winter, reappearing
Namur, Saint-Servais, 25 May 2009.
mine on Inula conyzae (Photo © Jean-Yves Baugnée)