Some have complex social structures. There are over 30,000 different species of wasps alive today. Wasps have four transparent wings.
Many females have a stinger at the tip of the abdomen.
All wasps build complex nests with many six-sided cells. They make the nests with a type of paper that they make by chewing wood and plant fibers. The nests are used to lay eggs in and to protect the young. Every winter, all the wasps die except new, mated queens, who burrow into leaves or soil to survive. Some, like the scoliid wasps, lay their eggs in a caterpillar or in beetle grubs.