Arizona-Sonoran Desert Museum, Pima County, Arizona, USA November 1, 2015
I had a very tough time figuring out roughly what this was, so hopefully I have narrowed it down accurately. I believe it is in the genus Coelioxys based on the wing venation and highly pointed abdomen. I can't seem to find one that looks just like this from Arizona, so I am interested to see what this one is! ID help is greatly appreciated!