Brown-tail
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Euproctis chrysorrhoea
Common & widespread in Britain.
Mainly nocturnal.
Larval foodplant is Hawthorn & Blackthorn.
The body is very hairy and white except for the tail which is covered in reddish-brown hairs, much more prominent in the Females.
Males have larger antennae, used to detect pheromones released by unmated females.
Females have a larger body.
Adults fly from July-August in a single generation.