Which paper wasp species is known for recognizing individual nestmates by markings?

The paper wasp species known for recognizing individual nestmates by markings is Polistes fuscatus.

This North American social wasp uses variable facial and abdominal patterns as visual identity signals. Researchers found that altering a wasp’s markings with acrylic paint could trigger extra aggression when it returned to its colony, until nestmates became familiar with the changed appearance.

Individual recognition helps maintain the species’ dominance hierarchy. Wasps can distinguish who they have encountered before, reducing unnecessary fights and helping regulate interactions among foundresses, workers, and reproductive females. The markings are not simply badges of rank: studies indicate they function primarily as individual identifiers.

A common mix-up is nestmate recognition versus individual recognition. Polistes wasps also use learned chemical cues associated with the nest to identify colony members, while P. fuscatus is especially famous for visual recognition of particular individuals. The species is a paper wasp, not a bee or hornet.