This beauty is easy to miss inside the Tucson Botanical Gardens' butterfly exhibit. I think this is an Owl Butterfly - named for its distinctive wing markings that scare away predators. Clinging to the side of a tree it blends in with the bark quite well.
I'm a transplanted New Yorker who loves the Tucson climate. On New Year's Day I have a bit of fun calling my (snowbound) east coast friends to announce that I'm drinking coffee while sitting on my patio. (: