rather common, but local species throughout Belgium.
monophagous larva lives on Acer
It makes a fairly large and rounded mine on the underside of a
pupa of the second generation hibernates.
adults fly in two generations a year: in May and in
mine: underside of the leaf, between two veins but not necessarily
touching both and rarely situated at the leaf edge. The lower epidermis
appears smooth or with several small creases and becomes whitish. Often
there are several mines in a leaf.
ID imago: one of three similar Acer-feeding
Phyllonorycters; this species is separable from Ph. acerifoliella by
the first chevron is only bent or obtusely angulate, not constricted at
middle. In the basal area there are 3 slightly oblique blackish brown
lines; the dorsal line is about midway towards the 2 opposite costal
Namur, Ciergnon, 07 April 2007
ex pupa (mine 18/11, indoors 20/03, imago
(Photo © Chris Steeman)