I was back in that wonderful arroyo, in White Tank Mountains Regional Park. Like thousands of us, I have a senior relative living near Phoenix, in Sun City West, and periodic trips there enable me to do some fieldwork.
The arroyo was its usual, dry as a bone, hot (hot at 7 A.M.), boulders everywhere, plus it had few plants, and very few of those were in flower.
Turns out that was sort of good for me. There were so few flowers about, that any and all fliers could be expected to be at those flowers, sooner or later. They almost had to.
This fly, I think it’s a fly, showed up. It must have been famished, for this wild creature allowed me to do my macro- approach, and I looked, liked, and shot away.
Not a butterfly, but an exotic winged beauty, no doubt. I examined it again, and surely the greatest aeronautical minds of MIT, Harvard, Cal Tech, Carnegie Mellon, Stanford and Georgia Tech must have designed this one. No?