Last modified: Nov. 2, 2022, 3:02 p.m.
A very rare and irregular immigrant. Can establish itself for a while after an influx of immigrants. Not often observed.
The caterpillars are frequently eating other caterpillars. Hibernates as a pupa in a flimsy cocoon on or below the ground.
It is active during the day in sunshine visiting flowers. They come to light.
The adults have been recorded from mid May till mid August, but most specimens were seen during June and July.