recent arrival in Belgium (2007).
young larva mines the leaf of Ulmus. The corridor
follows the midrib and/or a lateral vein, most of the gallery
completely filled with frass. Pupation in a
grey-black, ribbed cocoon.
adults fly in two generations a year; onwards from April towards May
and again during July. They are active in the evening.
Antwerpen, Wilrijk, 30 September 2007.
mine on Ulmus
(Photo © Chris Snyers)