You never know when you are going to find a new insect here in Arizona.
Glancing quickly, I thought the read and black bug below feeding on a desert milkweed flower was a large milkweed bug, Oncopeltus fasciatus.
But looking again, I realized it had two black bars across the center of the body, rather than one wide one.
This is an adult Oncopeltus cayensis. I don't think it has a common name. Check out the sucking mouthparts it is using to feed on the flower.
Have you ever found something new when you took a second look?