They're U-social parasitoids; one reproducing female, one fertile male, and a large number of sterile male workers. They infest human areas and manipulate them into protecting their nests. Gargamel tried to inhibit their spread by introducing a sterile female to this colony after an unknown event caused their breeding female to disappear. Likely the colony would have raided another colony for its female if they had located one, making Gargamel's intervention necessary to prevent them looking for a fertile replacement queen.