Heather Mason sends this great shot of the Lesser Purple Emperor, form clytie, from SW France. Seems we only just miss out in the UK - apparently it's fairly widespread over the channel in Normandy.
Personally, I've always been a bit puzzled by those species that exist in two quite different forms side by side - is it geographic, climate related, genetic propensity, or what? I'd be happy to read an explanation if anyone feels inclined to provide one.
|Apatura ilia, form clytie|