When I was out taking pictures of buggy critters the other day, there were quite a number of Monarchs, plus another butterfly I couldn’t identify. Every once in a while, though, I would see a flash of blue on a butterfly. It was a little smaller than a Monarch.
Sometimes I would get a brighter flash of blue, then it was gone.
Finally I got a good look at the “blue” top side:
After searching high and low on the ‘net for blue butterflies, to no avail, I finally stumbled across this guy’s identity: a Red-Spotted Purple butterfly.