Admirable Admiral

Just when I was getting into an Autumnal mood, summer stages a fight back!
So we took advantage of the sunshine by going for a stroll in Richmond Park, where this fellow hitched a ride on my t-shirt.
I'm pretty sure it's a Red Admiral, but any lepidoperists out there can correct me if need be!
I called him "Horatio", as like Nelson, he seems to have lost a few body parts.