species in Belgium.
monophagous larva makes a leafmine on Alnus glutinosa.
It's a long irregular gallery with the frass at first in a thin central
line, later it becomes broader and very variable in pattern, often
several mines in one leaf. Pupates in a dark reddish brown cocoon.
adults fly in two generations a year; during May and again in August.
Antwerpen, Wilrijk, 13 August 2008.
mine on Alnus glutinosa
(Photo © Chris Snyers)