Mer Bleue Conservation Area. This beetle was sitting on a dogwood shrub. Thanks to Bug Guide I now know this is Calligrapha rowena. I was greatly puzzled by the unusual pattern. But they say it is probably a "teneral specimen - just emerged from pupa. The spots and stripes take a while to develop. At first the elytra are completely pale yellow and the spots 'fill' progressively in the first hours after emergence."