A rare species in Belgium, but as with many Elachistidae probably underrecorded. 

The larva feeds on various Cyperaceaa and Poaceae like Brachypodium, Carex, Calamagrostis, Sesleria, Deschampsia etc...
The larvae mine either upwards or downwards and the mine gradually widens with all frass deposited  at the beginning of the gallery. Hibernates within the mine.

The adults fly in two generations a year; onwards from mid May towards early July and again in August.