Southern Yellowjacket

Vespula squamosa (Drury), a member of the Vespidae family, is a common social wasp found in eastern North America. Queens are approximately 18-20 mm long, while workers are 10-15 mm. They are brightly colored with distinct yellow and black markings. The head is predominantly yellow with black markings, and the abdomen has alternating yellow and black bands, often with a prominent yellow stripe on the upper part of the thorax. Nests are subterranean or built in protected cavities, often constructed from paper-like material. An overwintered queen initiates the colony in spring.

V. squamosa are highly predatory, feeding their larvae with a variety of insects, including caterpillars, flies, and other arthropods. Adults also forage for sugary substances, such as nectar, fruit, and human foods, often becoming a nuisance at picnics and outdoor events. They are notoriously aggressive when their nest is disturbed, delivering painful stings. Foraging activity is highest during warmer parts of the day, extending into early evening.