Last modified: April 10, 2021, 11:58 a.m.
A very rare and local species in Belgium. Hitherto only known from NA and LX.
Eggs are oviposited singly on the wings along the stems. Pupation inside the mine during spring time. The species hibernates in the larval stage inside the mine. The adults are mainly active at dusk and come to light.
The adults fly in two generations a year: from late April till June and again in August.
The monophagous caterpillar only lives on Genista sagittalis. The mine is often long and strongly folded. The larva pupates inside the mine and hibernates.
Xerothermic areas on limestone soil where the larval host plant grows.