American Slave-Maker Ant vs Western Yellowjacket

Side-by-side species comparison

Attribute American Slave-Maker Ant Western Yellowjacket
Scientific Name Polyergus lucidus Vespula pensylvanica
Order Hymenoptera Hymenoptera
Family Formicidae Vespidae
Size 5-7 mm 11-16 mm
Habitat Woodlands Woodlands
Diet Omnivores Carrion Feeders
Regions Eastern North America Western North America from Alaska to Mexico
Conservation Not Evaluated Least Concern

American Slave-Maker Ant

A North American slave-making ant that conducts well-organized raids on Formica colonies. New queens infiltrate host colonies by killing the resident queen.

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Did You Know?

During raids, they release propaganda pheromones that cause defending ants to flee or fight each other instead of the raiders.

Western Yellowjacket

The most common yellowjacket in western North America with a distinctive diamond-shaped black mark on its first abdominal segment. It is a frequent uninvited guest at outdoor picnics.

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Did You Know?

In Hawaii, where it was accidentally introduced, it has become a serious invasive pest threatening native insects.