Just another bit of FYI-- wasps and cicada killers do look similar... :)
Ground wasps---these will "light you up" if they get disturbed!! Nasty critters--much smaller than cicada killers....
This is a "killer" doin' her thing!! I watched them do this in my yard.... very interesting to see. They will paralyze the cicada, drag it into their hole, lay an egg on it and the larva will use the cicada as food....