Dark Green or High Brown?

[doke]

Photo taken back on 28th July on the South Downs near Alfriston.

I had assumed this was a Dark Green Fritillary, but now beginning to wonder if it might be a High Brown given the third spot looks slightly indented. Sorry for poor quality of photo.

Any opinions?

[aeshna5]

Both species do look very similar on the upperwing, but on distribution it would have to be Dark Green. High Brown Fritillary is one of our rarest butterflies + is extinct in eastern England. The closest population to the South Downs is probably around Dartmoor!

[doke]

Thanks for the reply. I should have checked the distribution and population size of the High Brown before making this suggestion! Very sad that this species has declined so much.