Stu Koretz writes: "...The yellow and black patterned beetle in image 38 looks like an ornate checkered beetle (Trichodes ornatus).
<bugguide.net/node/view/514132/bgimage>
"These are in the Cleridae family, many species of which like to hang out on flowers, eating other insects and also pollen.
<en.wikipedia.org/wiki/Cleridae>"

On blossoms of holly-leaved cherry (Prunus ilicifolia). Note the hairs! These beetles have a tarsal formula of 5-5-5: on each of the front, middle, and hind legs there are 5 tarsomeres (individual subsegments of the feet=tarsi), though these may be hard to distinguish. Looking hard at this image, this is certainly not ruled out. I agree with Stu.