Location: Socorro, NM, USA
July 19, 2010 8:30 am
I encountered this fair-sized beetle on our door upon taking out some trash. It was kind enough to stay put as I ran and grabbed the camera. Sorry for the relatively poor quality; it was dark and my camera has a tendency to over-saturate with the flash. It was a little over an inch long, by my estimation.
As you indicated, your photo is not ideal quality, however, we are confident that this is a Lined June Beetle in the genus Polyphylla. We cannot, however, commit to an exact species identification. Perhaps it is Polyphylla hirsuta, a species that BugGuide reports from nearby Arizona.