Spending most of my life a few miles from O’Hare Field I’m rarely surprised what new species or illness shows up, and I was outside with my family when I looked down and saw something I’ve seen on local news. Calling a daughter’s attention to it I asked if it was a MURDER HORNET!!! as it’s pronounced on TV.
University of Illinois extension service thinks it’s very unlikely that the giant hornet will make it to Illinois. Perhaps you saw a European hornet or cicada-killer wasp.
We have been seeing some kind of large hornet here in the Cleveland area for about 4 years now. They appear in the fall and for a week or two are around at dusk. My neighbor has frequent cook outs and is always on the lookout for them. I don’t know what they are but they are huge compared to regular white faced hornets. They appear several at a time so are not cicada killers.