A native species to North America and accidentally introduced to Europe and first recorded near Basel, Zwitserland in 1983. In Belgium recorded for the first time in 2001 in the province of Limburg. Expands rapidly throughout the country.

The larva is monophagous on Robinia pseudoacacia and make oval white blotches on the underside of the leaves. Regurarly more mines on one leaflet occurs and they often merge each other and than several larvae can be found in one mine. The mine never crosses the midrib. Pupation in a whitish cocoon.

The adults fly in three generations a year; from May till October. They hibernate as imago.