Facts, Identification & Control
Vespula spp. and Dolichovespula spp.
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.
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.
Do they sting?
Known to be aggressive defenders of their colonies, yellow jackets are otherwise not quick to sting. However, the sting of a yellow jacket is painful, and each insect is capable of delivering multiple stings. Because they are equipped with lance like stingers with small barbs, compared to the larger barbs in honey bees, yellow jackets are capable of stinging repeatedly.
Yellow jacket stings may induce severe allergic reactions in some individuals. Read more about yellow jacket stings.
Yellow jackets vs bees
They are often mistaken for bees, although their bodies lack the same amount of hair, rounded abdomen, and the expanded hind leg used for carrying pollen of the bee. These social wasps live in colonies that may contain thousands of insects at a time.
How Did I Get Yellow Jackets?
Yellow jackets usually enter yards because they smell food or other attractant. Meats and sweets often attract these pests to grills and patio dining areas. Open waste cans and outdoor picnics are also an invitation to hungry yellow jackets.
How Serious Are Yellow Jackets?
Typically, yellow jackets do not cause structural damage to homes. They might, however, build nests in attics or walls and defend them. On occasion, the pests chew through drywall to enter living spaces.
If disturbed when they are out foraging or protect their hives, yellow jackets will defend themselves. Their stings can be painful. It is best to avoid a yellow jacket nest as much as possible.
How Can I Get Rid of Yellow Jackets?
What Orkin Does
The Orkin Man™ is trained to help manage yellow jackets and other stinging pests. Since every yard or home is different, the Orkin technician will design a unique program for your situation.
Keeping yellow jackets out of your home is an ongoing process, not a one-time treatment. Orkin’s exclusive A.I.M. solution is a continuing cycle of three critical steps — Assess, Implement and Monitor.
The Orkin Man™ can provide the right solution to keep yellow jackets in their place…out of your home.
For more information or to schedule an inspection, please contact your local Orkin branch office.
Many yellow jackets are ground-nesters. Their colonies can be found under porches or steps, in sidewalk cracks, around railroad ties or at the base of trees. Sometimes “>the queen uses a wall void of a building as a nesting place. Some yellow jackets build aerial nests in bushes or low-hanging branches or in the corners of buildings and other manmade structures.
A colony may contain 1,000 or more workers by fall. All of the workers are sterile females. In late summer males will begin to appear. When they become adults, they will mate with the females that will become the next year’s queens.
The fertilized females will hibernate through the winter. The workers and the males will perish when the weather turns cold.
A queen yellow jacket starts a new nest by building a small paper nest in which she lays the first batch of eggs. After hatching, these eggs are fed by the queen until they are ready to pupate and mature into adult yellow jackets. Adults live through one season and feed on caterpillars, grubs and other insects. They also enjoy nectar and sweet substances such as fruit and tree sap. Yellow jackets are attracted to garbage and other human foods, particularly meats and sweets.
Signs of a Yellow Jacket Infestation
Yellow jackets usually are detected when workers are encountered. Nests, particularly the aerial nests, also may be a sign.