Found locally in woodland.
Unmistakable black wings and red collar.
Sometimes found flying in the daytime.
Migrant examples also occur.
The larvae feed on lichens and algae growing on tree-trunks in autumn, and overwinter as a pupa.
Recorded in 51 (74%) of 69 10k Squares.
First Recorded in 1834.
Last Recorded in 2020.