rare and local species in Belgium, probably overlooked.
green larva makes a narrow gallery in a leaflet of Sorbus aucuparia,
which slowly gets wider and often follows the leaf margin. The frass in
the initial gallery is linear, leaving narrow margins, thereafter it's
variable, but usually lying in arches.
adults fly in two generations a year; May-June, and August-September.
Antwerpen, Schoten, 03 July 2008.
mine on leaflet of Sorbus
aucuparia - view upperside
(Photo © Chris Snyers)