Posted by Simon Oliver on 24-08-2023 11:25
#1
Is it possible to distinguish between these two species based on wing pattern? I have downloaded images from the internet of the two and find it very hard to see any clear difference. Or is another feature needed?
I have a few photos where I have this problem and am attaching one, from Yegen, Andalucia, Spain on a wall in the village, 30 April. Can this be assigned a species?
Thank you.