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They are fun to chase. A lot people try to catch them here and others get really upset if you do because their life spans are so short. I didn't realize there were four kinds in the States.

Yeah, at least 4 that I know of.

And if these arent in Japan...check them out:
Sphecius speciosus, often simply referred to as the cicada killer or the cicada hawk, is a large digger wasp species.

Cicada killers are large, solitary wasps in the family Crabronidae

Some get really big and scare lots of people...but their only goal is to catch cicadas.