Actually, the two Grasshoppers were in a 1960's issue of DETECTIVE. Batman also fought a villain called the Wasp (and an Ant-Man), and Swarm was originally a CHAMPIONS villain. Let's not forget the Hellgrammite, whom Batman and Creeper fought in BRAVE AND BOLD (and later Green Arrow fought in WORLD'S FINEST). There was a one-shot character named Bee-Boy in an old SUPERBOY. I guess we've got Wildcat's foe, the Yellow Wasp, and let's not forget Marvel's bad guy The Beetle. And, yep, the Silver Scarab was the son of the Earth-Two Hawkman and Hawkgirl and appeared in INFINITY, INC. before dying and becoming a Sandman, and then dying, period. Plus there's the Scarab in PROJECT: SUPERPOWERS. Also Spider-Man's villain the Human Fly...we could go on like this forever.