Subject: Which Wasp?
Location: Long Island, NY
August 26, 2013 3:51 pm
I could not identify this one here or at BugGuide.
A little more help, please?
We believe this is a Blue Mud Wasp, Chalybion californicum, but we are not certain. We will try to get a second opinion. See BugGuide for photos of the Blue Mud Wasp. The iridescence of the wings is only visible in your second photo.
Eric Eaton provides an identification: Male Great Black Wasp
I’d say a male Great Black Wasp, Sphex pensylvanicus.