Wasp vs Hornet — How to Tell Them Apart (New Hampshire Guide)
TL;DR
Every hornet is a wasp — 'hornet' is simply the common name for a few large social wasps in the genus Vespa. New Hampshire's only true hornet is the European hornet (Vespa crabro), established here since about 1840 and the state's largest stinging insect. The familiar black-and-white 'bald-faced hornet' is taxonomically a yellowjacket, not a true hornet. The murder hornet (Vespa mandarinia) has never been recorded in NH and was declared eradicated from the entire United States on December 18, 2024.
European hornet worker size
~25 mm (1.0 in)
Workers average around 25 mm; Wikipedia / Penn State Extension
European hornet queen size
Up to ~35 mm (1.4 in)
The largest stinging insect in New Hampshire; Wikipedia
European hornet in North America since
~1840 (first reported in New York)
NC State Extension / Wikipedia — established in eastern North America for nearly 200 years
Bald-faced hornet adult size
~19 mm (0.75 in)
Taxonomically an aerial yellowjacket, not a true hornet; Wikipedia / USDA idtools.org
Every hornet is a wasp — and NH has exactly one true hornet
Here is the one sentence that unlocks everything on this page: every hornet is a wasp. 'Hornet' is not a separate insect family — it is just the common name used for a handful of large social wasps in the genus Vespa. Ask 'which is worse, a wasp or a hornet?' and you are asking a category question that does not have a meaningful answer, because hornets are wasps. The useful question is: which particular wasp are you dealing with?
For New Hampshire residents that question has three realistic answers. The black-and-white insect building the gray football nest in your oak tree is not a true hornet at all — despite its common name, the bald-faced hornet (Dolichovespula maculata) is taxonomically a yellowjacket, and every major entomology resource (Wikipedia, iNaturalist, USDA idtools.org) now states this plainly: it 'is not one of the true hornets, which are in the genus Vespa.' The true hornet in your state — the only one in eastern North America — is the European hornet (Vespa crabro), a reddish-brown, cavity-nesting night-flier established here since about 1840, with workers reaching about 25 mm (one inch) and queens up to 35 mm (1.4 inches), making it the largest stinging insect in New Hampshire.
The third possibility — the insect searchers still call 'murder hornet' — is Vespa mandarinia, the northern giant hornet. It was never recorded in the eastern United States, was detected only in a small corner of Washington State near the Canadian border, and was declared fully eradicated from the United States by the Washington State Department of Agriculture and USDA on December 18, 2024, after three years of intensive monitoring found no new specimens.
This page gives you the comparison table, the behavioral differences, and a four-question decision tree to name the insect in front of you. If you land on a social wasp — paper wasp, yellowjacket, bald-faced hornet, or European hornet — and it is near a door, play area, or wall void, that is a professional removal case. Anchor Pest Services confirms the species before treatment and charges one flat rate for Wasp and Hornet removal across southern and central New Hampshire.
Wasps and hornets in southern and central New Hampshire
Southern and central New Hampshire — the Manchester, Nashua, Concord, Derry, Bedford, Salem, and surrounding Rockingham, Hillsborough, Merrimack, and Strafford county area — is home to every social wasp on the comparison table below. Paper wasps (both the native northern paper wasp Polistes fuscatus and the invasive European paper wasp Polistes dominula) are widespread and common. Yellowjackets, principally the eastern yellowjacket (Vespula maculifrons) and German yellowjacket (Vespula germanica), are the dominant fall-scavenger pest. The bald-faced hornet (Dolichovespula maculata), despite its misnomer, is a yellowjacket relative and is a regular presence in NH trees and eaves from June through frost. The European hornet (Vespa crabro) is the state's only true hornet. It has been established in eastern North America since approximately 1840 and is present but more localized than the other social wasps — found in wooded suburbs and rural areas with hollow trees, barns, and older structures that provide the cavity nest sites it requires. It is uniquely the only NH social stinging insect that regularly forages at night, attracted to lit windows and porch lights, which makes it easy to confuse with a 'murder hornet' by homeowners who see a large brown wasp indoors after dark in September or October. All NH social wasp colonies are annual. They collapse at the first hard frost — in Manchester and the southern service-area tier, that falls around October 19 (50% probability) to October 29 (80%), per NOAA 1991–2020 normals, roughly two to three weeks later than Concord or Keene. Old nests are never reused. The cicada killer (Sphecius speciosus), the large solitary wasp most often mistaken for a hornet or murder hornet in July and August, is present but uncommon in NH, concentrated in Rockingham and Hillsborough counties — and it is harmless.
Species present in NH
- Northern paper wasp (Polistes fuscatus)
- European paper wasp (Polistes dominula)
- Eastern yellowjacket (Vespula maculifrons)
- German yellowjacket (Vespula germanica)
- Bald-faced hornet (Dolichovespula maculata — a yellowjacket)
- European hornet (Vespa crabro — NH's only true hornet)
- Eastern cicada killer (Sphecius speciosus — solitary, harmless)
Peak activity
Mid-August through mid-September
Service area
First-frost anchor: Manchester first hard frost ~Oct 19 (50%) / Oct 29 (80%) per NOAA 1991–2020 normals — all social wasp colonies collapse at first frost; old nests are never reused
UNH Cooperative Extension's 'Controlling Wasps, Bees and Hornets Around Your Home' covers NH paper wasps, yellowjackets, bald-faced hornets, and the European hornet — all of which occur across southern and central NH.
Wasp vs. Hornet
Every hornet is a wasp — 'hornet' names only a few large social wasps in genus Vespa, which is a subgroup nested inside the wasp family Vespidae. The question 'wasp vs hornet' therefore does not describe two opposing things; it describes a category and one of its members. What NH homeowners actually need to know are two things that most national pest-control pages get wrong. First, the black-and-white 'bald-faced hornet' (Dolichovespula maculata) is taxonomically a yellowjacket — its genus Dolichovespula is a yellowjacket group, not a true hornet group, and Wikipedia, iNaturalist, and the USDA idtools database all confirm it is 'not one of the true hornets, which are in the genus Vespa.' Second, New Hampshire does have one genuine true hornet: the European hornet (Vespa crabro), the largest stinging insect in the state, here since approximately 1840, and the only true hornet (genus Vespa) found anywhere in North America. The comparison table below uses 'Wasp' to refer to the non-hornet social and solitary wasps you are most likely to encounter in NH — primarily paper wasps and yellowjackets — and 'Hornet' to refer to the European hornet (Vespa crabro), NH's one true representative of the group.
NH clarification: Two things almost every generic 'wasp vs hornet' article gets wrong for New England. First, the bald-faced hornet (Dolichovespula maculata) is taxonomically a yellowjacket, not a true hornet — the black-and-white wasp building the exposed gray football in your NH tree earned the 'hornet' label only from its size and enclosed nest, but its genus Dolichovespula is a yellowjacket group, and Wikipedia, iNaturalist, and the USDA idtools database all state it explicitly. Second, New Hampshire does have one genuine true hornet: the European hornet (Vespa crabro), established here since approximately 1840 and the only true hornet (genus Vespa) in eastern North America. Workers reach about 25 mm (1 in), queens up to 35 mm (1.4 in) — the largest stinging insect in the state. It nests in tree hollows, wall voids, barns, and chimneys using coarse tan paper, and is uniquely active after dark, often banging into lit windows in September and October. The 'murder hornet' (Vespa mandarinia) was never recorded in New Hampshire or anywhere in the eastern United States, and was declared fully eradicated from Washington State and the entire US by WSDA and USDA on December 18, 2024.
| Attribute | Wasp | Hornet |
|---|---|---|
| Body shapeEuropean hornets read as visibly 'heavier' insects — they are often mistaken for a different species entirely on first sight | Slender, narrow waist (paper wasp) or compact (yellowjacket) | Bulkier, stout, with a noticeably broad head and heavier abdomen |
| Waist (petiole)Both are wasps and both have the wasp waist — the petiole alone will not separate a wasp from a hornet; size and color are the faster tells | Pronounced thin waist, especially obvious on paper wasps | Thin waist but paired with a much heavier abdomen than a paper wasp |
| ColorThe reddish-brown thorax is the fastest color cue for the European hornet; a wasp that looks 'rusty' at the shoulders is likely Vespa crabro | Brown/yellow/black (paper wasp, yellowjacket) or metallic (solitary species) | Reddish-brown head and thorax; yellow-and-brown banded abdomen — distinctly warm and reddish, unlike any NH yellowjacket |
| AntennaeOrange antennae mean European paper wasp, not European hornet; the antennae alone can prevent this common misidentification | Black (native paper wasp, yellowjackets); orange-tipped (European paper wasp only) | Reddish-brown to dark — never orange-tipped |
| Legs in flightDangling legs in flight = paper wasp, every time; hornets tuck like yellowjackets and are never the 'long-legged' look | Paper wasps dangle long legs visibly below the body; yellowjackets tuck legs | Legs tucked against the body in flight |
| SizeTrue size shock in a NH context is the European hornet — queens are the state's largest stinging insect | ½–¾ in typical for paper wasps and yellowjackets | Workers ~1 in (25 mm); queens up to 1.4 in (35 mm) — noticeably larger than any NH paper wasp or yellowjacket |
| Nest styleCavity-built coarse tan paper you can see at an opening is the European hornet's nest signature; the bald-faced hornet's exposed gray football is a yellowjacket nest, not a true hornet nest | Open umbrella comb (paper wasp); concealed papery void or ground nest (yellowjacket); mud tubes (mud dauber); soil burrow (cicada killer) | Coarse, thick, tan paper built inside protected cavities — hollow trees, barns, wall voids, attics — often at the cavity opening rather than deep inside |
| Aggression (1–5 scale)A European hornet at your porch light is not an attack; a disturbed cavity nest is a different situation — pro removal is warranted | Paper wasp: 2 (defends close range only); yellowjacket: 4–5 (mass attack over wide radius) | 3–4 (defensive; will defend cavity nest firmly, but day-to-day forager encounters are less confrontational than yellowjackets) |
| Sting / Schmidt indexPer individual sting, a paper wasp actually hurts more than NH's only true hornet; the European hornet's practical danger comes from colony size and cavity nesting, not per-sting intensity | Paper wasp: 3.0; yellowjacket: 2.0 | European hornet: ~2.0 |
| NH presenceThis is the answer most national competitors never give: NH does have a true hornet, and it is not the bald-faced species | Widespread across all of southern and central NH — the common social wasps homeowners encounter | Established but more localized — found in wooded suburbs and rural NH with suitable cavity sites; present since ~1840; NH's only true hornet |
Nest defense radius
Wasp: Paper wasps defend only within a foot or two of the small open comb; yellowjackets mass-mobilize and pursue intruders well beyond the nest
Hornet: European hornets defend the cavity nest firmly when it is disturbed, but individual foraging workers encountered away from the nest are not attack-mode — they are hunting large insects and visiting fruit and tree sap
Foraging targets
Wasp: Yellowjackets scavenge sugar and protein at NH cookouts from August through frost, becoming the dominant outdoor nuisance; paper wasps hunt caterpillars and largely ignore human food
Hornet: European hornets take large prey (flies, other wasps, cicadas), tree sap and fruit — they are documented girdling tree branches to collect sap — and are less interested in human food than yellowjackets are
Time of activity
Wasp: Paper wasps and yellowjackets are day-active, with peak activity in warm afternoon sun
Hornet: European hornets are uniquely nocturnal foragers among NH's stinging insects — they bang into lit windows and fly at porch lights after dark, a behavior documented by NC State Extension; this is the wasp that startles people indoors at night in September and October
The 'giant wasp' panic species
Wasp: Most large wasps NH homeowners encounter in lawns (July–August) are harmless solitary cicada killers or great black wasps — neither has a colony, and females rarely sting
Hornet: A genuinely large brown wasp at a lit window after dark is almost certainly a European hornet — real, established in NH, worth professional attention if it is accessing the structure, but far less dangerous than 'murder hornet' panic implied
Quick decision tree
Three social wasps and one harmless solitary wasp account for nearly every 'wasp or hornet?' call in southern New Hampshire. Name yours in four questions.
Is the wasp's body predominantly black and white — a bold black-and-white pattern with no yellow or brown?
Frequently asked
Wasps gone — and they stay gone.
Same-day service across Southern New Hampshire. NH-licensed #782664. Family-owned since 2017. We handle ground, wall, and aerial nests with EPA-registered products and a 30-day re-treat guarantee.