Grau-Erle
The larvae feed on "Alnus cordata", "Alnus glutinosa" and "Alnus incana", mining the leaves of their host plant. They create an upper-surface, fairly small, almost flat tentiform mine with a yellow-green colour. The mine has a single, fairly strong fold and is mostly positioned over a lateral vein. The frass is deposited in a clump in a corner of the mine.