Sphinx Moth
Taking pictures of bees and butterflies on flowers is hard, but at least they land, if only momentarily. This is a sphinx moth and I’ve only very rarely seen one actually land. Certainly when feeding on flowers they tend to hover. Unfortunately this one was not in the sun, so it’s not shown as nicely as it might be, but beggars cannot be choosers. I’m guessing that this is Hemaris diffinis, the snowberry clearwing, but I really don’t know.