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Originally Posted by Jonners  Lovely clear photos Roger, and very informative..... However, I can't see the extra spot that the Common Blue has  I can count 10 black-centred white spots surrounding a larger splodge on the underwing (hind wing) of each butterfly. The splodge on the Brown Argus isn't as dark centred as the Blue, but otherwise I'm confused. Can you help please? |
Guy has summed it up very nicely. Maybe the underwing photos I chose weren't as clear to an inexperienced eye as they could have been.
The two examples Guy have given show it more clearly. It's certainly not always easy to tell them apart especially when they are a little worn.