Spacebug

Spacebugs (also known as Mandibugs) are large mechanical purple beetles with slot-like mouths and pincer-like mandibles that appear in Super Mario Galaxy.

They apparently try to suck Mario into their mouths as he gets close, but it is unknown whether they are trying to vacuum him up or if they are simply chasing him, trying to catch the plumber and squeeze him with their pincers. They will appear as common foes in the Honeyhive Galaxy, and are led by Big Bad Bugaboom.