Weevils are herbivorous beetles. They have a long 'snout' at the front of their head, called a "rostrum". Weevils are a family, the Curculionidae, which may be the largest beetle family, with about 45,000+ named living species. That makes it the largest family in the animal kingdom. In addition, the superfamily Curculionoidea has ten more families of closely related weevil-type beetles.