Today I found where Mr. Flame Skimmer hangs out in the front yard. I found him perched on a small Mojave Yucca (Yucca shidigera) that I planted this spring. This was about 5 pm.
Here's a close-up.
I didn't see the female around, in either the front or back yard. An hour later this guy was gone from the yard entirely, or at least I couldn't find him. Earlier this week there were three males chasing the female around the pond, and also chasing each other. Eventually one male chased off the other two, and I assume the fellow above was the victor. I was unable to get any pictures of the action because it was too fast and furious.