Medium sized wasp (20-30mm) with yellow and black markings on abdomen and orange antennae. The nests are always above ground and can easily distinguished from those of Vespula germanica in that the nest cells are visible on the underside of nests. Where present, these wasps are common on lawns where they forage for caterpillars and other prey. Nests can be sprayed with supermarket insecticide approved for flying insects. Fog nests and wasps early in the morning or in the evening.