Last modified: Aug. 10, 2022, 6:31 p.m.
A regular, but sometimes common migrant, which can establish itself in favourable years. It can not survive severe winters.
The larvae are very lively. Pupation in a tough cocoon amongst the leaves of the foodplant or attached to a stone. The pupa hibernates.
The adults come to light.
The immigrants arrive from May till August and they can produce offspring of which the adults fly from August till late October.