The Mantisaurs are irradiated mantid-based Insectosaurs. Most of them are direct descendants of Preytor. All of them express hive-like behavoir.
Mantisaurs appear in both WotM games. In the first game, they attack as giant red ants in Rosdale Canyon out of a giant ant hill. Though they are very weak beacuse they sustained a small amount of exposure to the alien fuel.