I posted pictures of a similar beetle here. Possibly a different species of the same genus.
I found 3 of these little guys on the wall outside my garage this morning.
BugGuide also lists its range as "cosmopolitan", which I guess means it's as common as dirt.
I'm not sure if the common name is an indication of this beetle's diet, but there is a row of rosebushes in my neighbor's yard, very close to my garage.