Last modified: April 13, 2021, 10:47 a.m.
A very rare species in Belgium.
The adults fly during May and June. They are mainly active during daytime and later occasionally come to light.
The larva lives on Crataegus, but it is known also as a serious pest of several fruit trees, especially Malus, less frequently, Prunus domestica, Pyrus and Prunus cerasus. Also known from Swida sanguinea and Sorbus torminalis. The full-grown larva spins a cocoon under loose bark on tree trunks or larger branches. Here, it overwinters, pupating in the spring.