A wasp is an insect belonging to the order Hymenoptera, which also includes bees and ants. Wasps have a slender, elongated body with a narrow waist, and they often have bright yellow and black markings. Unlike bees, which are generally hairy and primarily gather pollen, wasps are more streamlined and can prey on other insects or feed on nectar and fruit. They are known for their painful stings and can be more aggressive than bees, especially when defending their nests. Wasps play important roles in ecosystems, including pollination and pest control.