Last modified: Jan. 28, 2020, 10:16 a.m.
A rare species throughout Belgium, especially in the northern part.
The larvae feed from about August to October by mining into the twigs, but are difficult to find except for the existence of an exit hole close to a fork.
The larva lives inside a small twig of Crataegus. Pupation in the larval habitation.
The moths are diurnal and fly during the mornings in the sunshine around the larval foodplant.
The adults fly in one generation a year; from late April till June.