Last modified: Oct. 2, 2020, 2:53 p.m.
A very rare species in Belgium.
Second instars feed on the leaf parenchyma in the center of the leaf, gradually extending to other leaf areas. Sometimes, especially in small leaves, the mine occupies the entire leaf area and in such cases, the caterpillar moves to another leaf. Frass is ejected from the mine. Pupation inside the last mine. The species hibernates in the larval stage.
Two generations per year: May–June and August.
The caterpillar lives mainly on Ononis spinosa and Trifolium pratense, but it has also been recorded from various other Trifolium species.