A wasp is an insect belonging to the order Hymenoptera, which also includes bees and ants. Wasps have slender bodies, narrow waists, and two pairs of wings. They are often recognized by their bright yellow and black coloration. Wasps play important roles in ecosystems as pollinators and as predators of other insects. There are many species of wasps, with some being solitary and others social. Social wasps, like those in the family Vespidae, live in colonies and build nests from paper-like material made from chewed wood fibers. Unlike bees, wasps can sting multiple times, which they do when they feel threatened.