I can at least vouch for the one he killed yesterday afternoon. I was coming in, he was going out, and I informed him there was a huge wasp in the entryway. He asked me which window, and took a can of bug killer out with him. There was noise.
He came back in a couple of minutes later to inform me that the thing has as he put it 'an eight foot wingspan' and may possibly have been packing heat, Antonio Banderas-style (what movie was that? anyone?) He told me the wasp flew straight at him, even after three spritzes of bug killer. DH trapped the thing in an upstairs landing window, drenched it in bug killer and gave strict orders that I was not to open said window until he got home. Yeah, like that was even a remote possibility. First of all, the landing is an oven, second of all, I can attest that this was perhaps the biggest wasp I've ever seen. As in big enough to ride in the commuter lane big. I think it was wearing some kind of hat.
DH comes home after his shift, checks the window of bug death, and informs me the target has been neutralized. I checked this morning, and while still dead, I'm wondering if maybe she was the queen. There is a nest on the porch, and the decendent does seem to have a bit extra in the booty department.