A not so common species throughout Belgium.

The larva lives on a range of trees and shrubs, like Crataegus, Prunus spinosa, Salix, Quercus, Rosa and Cotoneaster. Hibernates, sometimes for several years as a pupa under bark or in bark crevices of the foodplant.

The adults fly in two generations a year: from mid April onwards till begin of September. They come to light and sugar.

ID: adults of Acronicta psi and A. tridens cannot be safely distinguished from each other, except by reference of the genitalia. Allthough larvae of both species are quiet different and are easy to identify as species.