We hadn't seen one of these in a while--one of those continuity implants that tells of yet another something Jor-el sent from Krypton to Earth. In this case, it seems that Superman's Papa anticipated a plague of mighty space locusts might attack Earth one day so he sent his own giant bug to eat them when and if they did. Coincidentally, that bug is found and freed just as said locusts show up!
Interesting art this time around from old WF vet Lee Elias, his mature style barely recognizable under John Calnan's solid inking.
Haney always did some fond of the Whirleybat in B&B but it seems strange seeing the darker version of Batman using it here.