Too hot!

It was so hot today I hardly went outside. Didn't see many butterflies when I did either. Is it possible for it to be too hot for butterflies? I did see Buckeye again today though, it may have been the same one from yesterday. It's wings were pretty beat up though, it must have had some sort of trouble since yesterday. I had my camera, but it wouldn't sit still long enough for me to take a picture. Saw the Pipevine Swallowtail again. Not much else though, except Monarchs and Hackberrys. Oh, I forgot to add yesterday that I saw a Question Mark too. This ones wings were real nice yet. I went to get the camera but it was gone when I got back. Here is a puzzle for you:
How many Black Swallowtail caterpillars can you find in this picture?
See answer to Black Swallowtail Puzzle