Yellow clypeus. A few of these, mostly asleep in squash flowers. I accidentally woke one up, so I didn't spend too much time photographing this one.
Squash Bee - long-horned bee
Forage flower: Pattypan squash
Male: yellow face, lack of scopae on hind legs
Specimen found in my own squash garden. It, along with numerous others, are spotted frequently throughout the day around the flowers.
In Coyote Melon flower