In another time and place, but this is the same species, I promise. The bug itself is yellowish, another count against crown whitefly, which would be black.
(The blood is unrelated, from mosquitoes, so this isn't a wayward, nothern, non-cactus-feeding cochineal bug or anything like that.)

Edit: okay, some anonymous editor apparently didn't like my linking these images. Here is a top view of another individual of the same species: