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Common Yellowjacket (Vespula vulgaris)

The common yellowjacket can be a pest because adults are attracted to protein or sugar sources. This species is also considered a beneficial organism because workers prey on caterpillars and other insects. Nests are mostly underground but can be constructed inside house walls or in aerial locations. Nests are large containing 500 to 5,000 workers and remain active as late as December.

This is a common species in wooded areas. Most nests are subterranean, although logs, stumps and the like are also used as nesting sites. Adults usually prey on insects. Nests can be large containing as many as 5,000 workers.

Adult Activity Period: May – October