Last modified: June 2, 2020, 8:47 p.m.
A very rare and local species in Belgium, only known from the southern provinces.
After mating in autumn, the males all die and only the females hibernate. They come to light and sugar and visits sallow catkins in spring.
The adults fly from late August onwards till well into November. Depending on mild weather, the females fly again from February, but usually from end of March till May, very exceptional to early June.