Vespula maculifrons, commonly known as the western yellowjacket, is a species of wasp found in North America. There are several synonyms for this species, including Vespula consobrina, Vespula flavopilosa, Vespula ochracea, and Vespula pennsylvanica. These names are often used interchangeably to refer to the same species. Vespula maculifrons is distinctive for its black and yellow striped body and aggressive behavior. It is commonly found in urban and suburban environments where it can build nests in trees, bushes, and even inside homes. It is important to exercise caution around these insects as their stings can be painful and dangerous to those with allergies.