Last modified: Feb. 18, 2020, 7:51 a.m.
A not so common species in Belgium. Populations have declined because of the Dutch elm disease.
The bluish green larva makes a leafmine on Ulmus. Egg is laid on the underside of a leaf, generally close to a rib. Pupation in a brown to reddish brown cocoon among leaf litter.
The adults fly normally in one generation a year with adults emerging over a long period. They fly mainly in June.
The larva makes a leafmine on Ulmus.