"This is the Blue-banded Bee (Amegilla cingulata), a very beautiful insect that is also amazingly important to the agriculture of Australia."
Blue Carpenter Bee - Xylocopa caerulea
Carpenter Bee by Jean Marie Mouveroux Xylocopa violacea readily identified by its color. Carpenters bees are about 25 mm, glossy black all over, with sparse black hairs. Taken at Le Perreux sur Marne, Ile-de-France, France.