Last modified: May 7, 2024, 4:59 p.m.
A very rare and very local species in Belgium, mainly known from the coast.
Other observations outside this area are probably vagrants or tiny populations.
This species is considered Vulnerable according to the IUCN Red List category for Flanders 2023.
Native
It hibernates as half-grown larva and pupates in a cocoon among plant debris or on the ground. The adults come to light.
The adults fly from May towards August, sometimes later.
The larva lives on Beta maritima or other low plants.