The last two instars are able to move about within the cell. The pupa resembles a mummified adult. It is the same length as the adult. Yellow jackets are widely distributed worldwide. They are very common in the southeastern U.S. Nests are usually constructed underground.
Yellow jackets are active from spring until late fall.
They are found foraging throughout the day, but are most active during mid-day. Adults feed on a wide variety of food sources. Carbohydrates are obtained from nectar, honeydew secreted by aphids, scale insects and other insects, and from various fruits. Larvae and adults of various insects provide most of the protein requirements of yellow jackets. Many larvae of insect pests are killed by wasps feeding on them.