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. 

ID mine: starts as a narrow gallery with broken linear frass in early part. The frass pattern in the next part is very variable; sometimes linear, dispersed throughout or even in arches. The larval exit-hole is on the underside of the leaf, a feature serving to distinguish vacated mines from the sometimes similar mines of Stigmella lemniscella.