This is the second metallic green insect that I have found in my backyard over the last few days. Chalybion californicum is the scientific name of the Blue Mud Dauber. I was lucky to snap a shot of it because they are lightning fast! They range in darkness and in color from blue to green.
Not only do Blue Mud Daubers prey upon Black Widow spiders, but this beauty was kind enough to pause briefly for a photo. Come back any time little buddy!