Last modified: May 6, 2022, 4:02 p.m.
A very rare species, only known from the southern, more mountaineous part of the country. The species was very much in expansion in the 1950s-1980s, but has become very rare over the last couple of decades, since 2000.
Hibernates as a larva. The adults come to light.
The adults are on the wing in May and June.