Based on location and date, it’s virtually impossible that this very fresh individual is a Northern Brown Argus, which is univoltine and all but gone over, even in the extreme north of its range. This must therefore be a striking aberration of A. agestis. Looking at the British Butterfly Aberration...

For me ,that is a Brown Arg ,AB Snelleni (as suggested by Callumac ) ,and a very striking one at that ………...lovely find ! I posted a n Ab; Snelleni pic , a couple of days back to add to my personal photo log ,but nowhere near as striking as that one. they do tend to turn up quite regularly down her...

Wow! I've never seen an English NBA nor a Brown Argus with those markings. Great find and I'll be interested to hear what those with more experience of the Scottish race think about this. Did you find more 'normally' marked individuals flying there too? Hi David, Yes this individual was also flying...

This photo was taken at Doncaster, South Yorkshire today. I know what it looks like but as it is well outside the usual distribution area for Northern Brown Argus, my question is; can Brown Argus (Aricia agestis) also exhibit the white wing spots? I never got to see the undersides as after this phot...