Milbert's tortoiseshell

One of the pleasures of having retired is trying to get straight in my mind the names and identification of various insects the names of which I've known for a half century or more. One of these is Milbert's tortoiseshell, a butterfly I knew existed but did not know I'd seen until today -- I took this picture and only later, at home, realised what it was. If I kept a life-list of flying things, today I would have added this one.