A rather rare species in Belgium, but probably overlooked in many places.

The larva lives on Cornus sanguinea and C. mas. At first it makes a small narrow gallery along the leaf margin and later it suddenly widenes to a blotch-mine, which often absorbs the early gallery. The larva constructs an oval case of 5,5-7 mm cut from the blotch, in which it drops to the ground. The larva hibernates in that case on or just below the surface of the soil and pupates in the next spring.

The adults fly in one generation a year; onwards from late April till June. The moths are active in sunshine.