A pretty beetle I found one night. Looked like a June bug but with pretty metallic greens and yellows across its carapace. Unfortunately the camera couldn't quite do the colors justice. After a bit of research thanks to the good people of Bug Guide I now know it to be a Anomala marginata with no common name.
After yet further research (about 60 seconds) I found it DID indeed have a common name, an Ivory Marginated Ruteline beetle. The "Ivory" part is the thin white line along the protonum which separates them from June bugs.