Having grown the plant in the same place for about six or seven years I can only imagine that this migrant has been feeding each year on this late windfall as the plant goes on until the first frost,so now i have seen them in Bulgaria and one metre from my front door.
A little bit like looking for Bilberry Pug larva,travel miles and then see one a couple of miles from home.
I didnt try to catch it to take a mug shot preferring the thought that it had been through enough just getting here.
Will have to check them more often in future.
Absolutely nothing to do with above I thought you might like to see one of the dangers that our butterflies have to contend with at the end of July. Taken at Stockbridge Down it turned my tummy a bit so hope you haven't just eaten