How to Identify Paper Wasps: Nest Shape and Antennae Clues
How to identify paper wasps comes down to three things: an open umbrella-shaped nest with no outer covering, long legs that trail below the body in flight, and a narrow waist between the thorax and abdomen. Once you know what to look for, telling a paper wasp apart from a yellowjacket or hornet takes about five seconds.
What Counts as a Paper Wasp
Paper wasps belong to the genus Polistes, part of the family Vespidae. They build their nests from wood fiber they scrape off fences, dead branches, and siding, then mix it with saliva into a gray papery pulp. Common species in the US include Polistes fuscatus (Northern Paper Wasp), Polistes dominula (European Paper Wasp), Polistes exclamans (Guinea Paper Wasp), and Polistes carolina (Red Paper Wasp).
Body and Color
Coloration
Polistes fuscatus shows a patchwork of brown, reddish, and yellow markings that vary from wasp to wasp, even within the same nest. Polistes dominula, the introduced European species now common across much of the US, is more uniformly black and yellow and gets mistaken for a yellowjacket at a glance.
Body Shape
Paper wasps have a slim, tapered abdomen and a distinct “wasp waist” where the thorax narrows before meeting the abdomen. Their legs are noticeably long and hang down during flight instead of tucking against the body, which is one of the fastest ways to rule out a yellowjacket at a distance.
Wings
At rest, paper wasps fold both pairs of wings lengthwise along their back, giving the abdomen a narrow, blade-like look. In flight the legs dangle and the flight itself looks slower and more deliberate than a yellowjacket’s quick, darting pattern.
Antennae
Antennae color is one of the more reliable field marks. European Paper Wasps have orange antennae, a feature that helps distinguish them from yellowjackets. Native Polistes species typically show dark or reddish-brown antennae instead.
Size
Most Polistes species run 15 to 21 mm (about 0.6 to 0.8 inches) long; queens tend to be at the larger end of that range, workers at the smaller end. Polistes carolina, the Red Paper Wasp, runs larger, closer to an inch.
Nest and Colony Behavior
Nest Shape and Placement
A paper wasp nest is a single flat layer of hexagonal cells hanging from a short stalk, with no outer paper envelope covering it. You can see directly into the open cells and often watch larvae or adults moving across the comb. Nests typically hang under eaves, deck railings, mailboxes, or tree branches. Cornell’s IPM program describes this as an “open umbrella nest without an envelope or covering,” built from a single comb of egg cells, a shape that immediately separates paper wasps from anything with an enclosed nest.
Colony Size
A mature paper wasp colony holds a few dozen females, occasionally more in warmer climates with a long season. That’s far fewer than a yellowjacket nest, whose population grows substantially larger by late summer. Cornell notes paper wasps form “more limited colonies of a few dozen females” compared to yellowjackets.
Foraging
Paper wasps hunt caterpillars and other soft-bodied insects to feed their larvae, and adults also drink nectar. A wasp working methodically across foliage, pausing at leaves, is usually hunting rather than scavenging at your picnic table, which is more typical yellowjacket behavior.
Telling Paper Wasps Apart from Look-Alikes
Yellowjackets
Yellowjackets have short legs, a stockier body, and tight black-and-yellow banding with none of the color variation seen in Polistes. Most yellowjacket species nest underground or inside wall voids rather than building an exposed open comb, and their colonies are far larger by late summer.
Bald-Faced Hornets
The insect often sold as a “bald-faced hornet” is Dolichovespula maculata, which despite the common name is a yellowjacket, not a true hornet or a Polistes species. Penn State Extension notes it “is not a ‘true’ hornet – it is an ‘aerial yellowjacket,'” and that the only true hornet in North America is the European hornet. Its nest is the clearest tell: a fully enclosed, football-shaped paper structure that can reach up to 24 inches tall in some regions, built around a multi-layer comb hidden inside the envelope. A paper wasp nest never has that outer shell.
Bees
Bees are covered in branched hairs used to collect pollen; paper wasps have smooth, mostly hairless bodies built for hunting rather than pollen transport. Bees also tend to be less defensive around their nest entrance than a disturbed paper wasp colony.
Four Common US Paper Wasp Species
Polistes dominula (European Paper Wasp)
Introduced from Europe and now one of the most widespread paper wasps in the US. Black-and-yellow body, orange antennae, smaller nests than many native species.
Polistes fuscatus (Northern Paper Wasp)
The most common native paper wasp across the eastern two-thirds of the country. Brown body with variable yellow, reddish, and occasionally black facial markings that differ from wasp to wasp.
Polistes exclamans (Guinea Paper Wasp)
Slender and light brown with yellow abdominal markings, common in the southern and central US. Prefers open, sunny sites like gardens, fence lines, and eaves.
Polistes carolina (Red Paper Wasp)
Found mostly in the southeastern and eastern US, this species runs larger than most other paper wasps, with a reddish-brown body and dark wings.
Living Near a Paper Wasp Nest
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Leave the nest alone: Paper wasps rarely sting unless the nest itself is bumped or sprayed with water.
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Watch from a few feet away: They’re efficient caterpillar hunters and mostly ignore people who aren’t near the nest.
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Clean up food and drink spills: Sugary residue on outdoor tables draws foragers close to where people sit.
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Call a pro for nests over doorways or high-traffic areas: A nest within a few feet of a door or walkway is worth having removed rather than risking repeated close contact.
Quick Field Check
Open, single-layer comb with no covering: paper wasp. Fully enclosed football-shaped nest: bald-faced hornet (a yellowjacket, not a true hornet). Underground or wall-void nest with a large late-season population: yellowjacket. Long dangling legs and a narrow waist on the wasp itself are the fastest confirmation once you’re looking at the insect rather than the nest.
