Last modified: Feb. 21, 2020, 5:39 p.m.
A very rare and local species in Belgium, mainly observed along the coast.
Records outside this area are probably wanderers.
It hibernates as a larva and grows slowly during the winter, later it pupates under moss or in earth. The adults come to light and sugar.
The adults fly from early September till mid October in one generation a year. They come to light and sugar.