What do they look like? Yellow jackets, genera Dolichovespula and Vespula, are wasps that can be identified by their alternating black and yellow body segments and small size. Length: They measure 10 to 16 mm in length Color: Most yellow jackets are black and yellow, although some may exhibit white and black coloration.
Thin waist: In contrast to the bee, the yellow jacket’s waist is thinner and defined. Wings: Their elongated wings are as long as the body and fold laterally when at rest. Facts What do they eat? Yellow jackets are pollinators and may also be considered beneficial because they eat beetle grubs, flies and other harmful pests. However, they are also known scavengers who eat meat, fish and sugary substances, making them a nuisance near trash receptacles and picnics.