Hornets and wasps worry homeowners, especially in spring and late summer when nests show up in eaves and wall voids. If you spot a nest, don’t get close. This guide helps you tell different species apart and decide what to do.
True hornets are found mainly in the Vespa genus, but many people call other wasps hornets too.
Hornet vs Wasp vs Bee: Identifying Characteristics
Identifying hornets, wasps, and bees
- Many wasp species have slender bodies and a folded wing posture.
- Wasps nesting under eaves leave paper tubes that protect brood.
- Honey bees have fuzzy yellow and black stripes.
- Most hornets have black and yellow bodies.
- Bee nests use wax combs and house honey or pollen.
True Hornets (Genus Vespa) Key Species
Here is a quick look at the diversity of hornets you may see.
European hornet (Vespa crabro)
At 25 to 35 mm long, the European hornet has a reddish-brown thorax and a yellow abdomen with black “teardrop” marks. It’s not the largest hornet, but it can still sting hard.
You may find a European hornet nest in trees, attics, or wall voids. Queens overwinter and start a new nest site each spring.
- Colony size: 200-1,000 workers.
- Seasonal peak: August to September.
- European hornet workers fly at night and may swarm porch lights, according to Virginia Tech.
Northern giant hornet & Asian giant hornet
The northern giant hornet and the Asian giant hornet made headlines as the murder hornet. This giant hornet can nest in the ground or tree cavities. Reports help keep surveillance strong.
- Native to Asia but eradicated from the U.S. in 2024, per USDA APHIS.
- Colonies may exceed 10,000 members.
- Eradication teams use vacuum extraction and CO₂ traps.
Invasive Hornet Species and Emerging Threats
New invasive hornets threaten local wildlife and honey bees. Early ID can help your region track arrivals.
Yellow-legged hornet (Vespa velutina)
The yellow-legged hornet has an orange face, yellow tarsi, and a dark body with a single pale band. It builds aerial nests high in trees and structures. This insect is a serious honey bee predator in Europe and Asia, according to the University of Georgia.
- First U.S. detection: 2023.
- Can form 6,000-10,000 worker colonies in its native range.
- In Virginia and Maryland, this reportable invader must be noted.
Asian hornet and new species alerts
The Asian hornet is under watch here. Reporting of new species helps track invasive spread quickly.
- Notify your state apiarist if you see one.
- Keep records with local extension services.
Common Social Wasps Mistaken for Hornets
Nests can be found hanging from branches, dug into soil, or tucked behind siding.
Bald-faced hornet (Dolichovespula maculata)
The bald-faced hornet is not a true hornet but builds a large grey spherical nest. Bald-faced hornets pack up to 700 workers inside.
Yellow jacket and yellowjacket wasps (Vespula spp.)
Yellow jacket wasps can sting repeatedly, especially when you disturb their ground nest. Homeowners often confuse hornets and yellowjackets. Their yellowjacket nests often sit underground with a small entry hole and loose soil.
Paper wasp (including European paper wasp)
A paper wasp builds umbrella-shaped paper nests under eaves. The European paper wasp has brown and yellow stripes and a slender body. Some black wasps mimic hornets. They have black with yellow markings that confuse many homeowners.
For more on types of wasps, see our Types of Wasp Nests: How to Identify and Remove Them guide. Proper ID matters for bees and wasps alike.
Nest Types: Locating and Identifying Hornet and Wasp Nests
Aerial nests and Paper nests in Trees
Bald-faced hornets build aerial nests in trees or on building exteriors. These paper nests in trees can hold hundreds of hornet workers.
Ground Nests: Nest in the Ground and Subterranean Colonies
Yellowjacket wasps nest in the ground. They build their nests underground, so watch for soil mounds. Workers leave the nest to forage and return loaded with prey. Male wasps stick close to the hole late in season.
Wall void and Cavity Nests
True hornets and yellowjackets may use wall voids or attics for a suitable nest site. You might spot paper or frass near a nest entrance.
Biology and Life Cycle of Hornets and Wasps
Every insect has a unique life cycle that affects how it builds or abandons nests.
Colony Formation and Hornet Larvae
In spring a queen builds her first comb. Eggs hatch and hornet larvae grow fast. During peak season nests contain hundreds of brood cells.
Solitary Wasps and Individual Hornets
Not all species live in colonies. Solitary wasps and some solitary bees lay eggs in small nests out of mud or wood tunnels. These species of wasps rarely sting and help control spiders, including spider wasps.
Sting Behavior and Risks
Wasps are generally not aggressive when you are away from their nest. They rarely sting unless provoked.
These insects will sting repeatedly when defending a nest. They release alarm pheromones and call others.
According to UMD Extension, vibrations near a nest can trigger a defense surge.
Each hornet and wasp can deliver a painful sting that swells skin. Wasp stings can hurt for hours. Some people have a severe insect sting allergy.
Prevention
Not every nest needs a spray. Here’s how to reduce the chances of nests forming near your home.
These steps reduce the chance of nests forming, but if one has already started, don’t try to remove it yourself.
Chemical and Mechanical Control Methods
Pressurized contact aerosol
- Apply after dark to a nest entrance when most workers are inside.
- Use a freeze-down aerosol with pyrethroids, following the Purdue Extension guidelines.
- A spray may only work if the nest may be fully accessed.
Residual dust and physical removal
Dust insecticide into wall voids so workers track it back to the queen. You can bag-off small aerial nests and drop them into soapy water. Remember, hornets build their nests from chewed wood fibers, so a thin bag can collapse them.
DIY Treatment vs Professional Removal
Removal of Inactive Nests
After frost, many nests are empty. You can knock down a dry paper nest with a broom. Wear gloves and eye protection.
Why Active Nests Need a Pro
Active nests hold hundreds of defensive insects. Our technicians wear full protective gear (bee veil, coveralls, gauntlets) and treat at night when most workers are inside.
Better Termite & Pest Control’s Process for Hornet and Wasp Removal
In our family-run business, we use a 5-step home defense plan:
- Expert phone consultation with a licensed technician in Alexandria or Arlington (Pest Control Alexandria, Pest Control Arlington)
- 78-point home inspection covering wall voids and yard corners in Bethesda (Pest Control Bethesda)
- Targeted night-time treatment and nest dusting in Reston (Pest Control Reston)
- Unlimited callbacks until you reach a good baseline
- No contract, cancel any time with 30-day notice
We serve Alexandria, Arlington, Bethesda, Reston, and all of Northern Virginia.
If you need help with hornets or wasps, call us at 703-683-2000 or email info@bettertermite.com.
