It's a Zebra Swallowtail [Eurytides marcellus]. It flits constantly from one lavender stalk to another, and appears to be uninterested in roses or other flowers.This specimen has a big gap in his starboard wing, as if a predator took a bite out of him. Maybe he simply had a mid-air collision with another butterfly. In any case, this flaw doesn't seem to have an adverse effect upon his flight.
