Vagrant Emperors and Spanish Festoon

it was good to see a lot of Vagrant Emperors at Atlanterra  and be able to look at them in a fly-by capacity as per a British encounter -- my thoughts are that you would know it was different but actually nailing an ID on a fly-by would be tricky -- Spanish Festoon was the most notable butterfly we saw, no pashas, but quite  a lot of Painted Ladies, various small blues, Wall Browns, Cleopatras and the usual unidentified