fairly common species found in many parts in Belgium.
larva lives on Alnus
It makes a small
mine between two veins on the underside of the leaf, at or near the
midrib. The lower epidermis has one strong crease. In autumn often
several mines on one leaf. Pupation inside
the mine in a cocoon attached on under- and upperside of the mine.The
pupa of the second generation hibernates.
adults fly in two generations a year: in April-May and in
Namur, Lavaux Ste.-Anne, ex. pupa 08 January 2007.
(Photo © Chris Steeman)