European hornets (Vespa crabro), one of the largest wasp species in North America, were originally introduced from Europe in the 1800s. Known for their impressive size and reddish-brown coloration with yellow markings, these wasps have adapted to diverse habitats, including forests, grasslands, and suburban areas. Unlike many other types of hornets and wasps, European hornets are capable of nocturnal activity due to their large compound eyes, which enhance their vision in low light.
European hornets and European wasps are often confused, but they are distinct species with unique characteristics. European hornets are larger, with reddish-brown and yellow markings, and tend to be less aggressive than their wasp counterparts. In contrast, European wasps are smaller, more aggressive, and have a distinctive yellow-and-black striped appearance.
European hornets are distinct due to their size, reaching one to one and a half inches (25-38 mm) in length, making them one of the largest wasp species. Their bodies are yellow and brown striped, with reddish-brown heads and thoraxes.
Unlike bees, which have barbed stingers and can only sting once, European hornets have smooth stingers, allowing them to sting multiple times without harming themselves. They also have powerful mandibles, which they use to hunt and dismember various insects, including grasshoppers and flies, which they feed to their larvae.
These hornets are identifiable by their characteristic size and color patterns. They build large, enclosed nests in hollow trees, attics, or wall voids. European hornet nests are generally sheltered in dark, protected areas, unlike bald-faced hornets, which construct exposed paper nests in trees. They are also less visible and are typically found near dense vegetation or shaded areas.
Curious about hornets? Learn more about their behavior and habitats.
European hornets prefer nesting in dark, concealed locations, unlike other hornet or wasp species that build their nests in open areas. Hollow trees are a favored nesting site, though they may also settle in attics, sheds, or wall cavities of buildings, especially if there is limited disturbance. This preference for enclosed, shaded environments protects the colony from predators and weather extremes.
European hornets are widely distributed across the eastern United States, from the Mid-Atlantic region to as far south as Florida and as far west as the Midwest.
They are particularly common in forested areas but have adapted to suburban environments, especially those near wooded land. Though not native, they have become a well-established part of local ecosystems, contributing to insect population control.
While European hornets are not as aggressive as other hornets or wasps, they can defend their nests vigorously if they sense a threat. Their alarm pheromones alert other colony members, who may swarm to protect the nest.
In addition to stinging multiple times, European hornets can also release venom that may cause pain, swelling, and, in some cases, severe allergic reactions in humans. They can also spray venom as a defense mechanism, especially when threatened at close range.
Due to their nesting habits in enclosed spaces and their potential for aggressive defense, European hornets can be challenging to control.
Removing a European hornet nest without professional help is risky, especially since nests are often located in difficult-to-reach areas. Professional pest control services are recommended for safe removal, as specialists have the equipment and expertise to handle nests in confined spaces without endangering those nearby.
A European hornet colony can range from a few dozen to several hundred individuals. While a single nest might not always be problematic, any large colony near human activity or in residential structures can pose a hazard due to the hornets’ defensive behavior.
A noticeable presence of hornets around a property may indicate an infestation, particularly if multiple hornets are observed entering and exiting a specific area.
If European hornets are causing problems on your property, our experts at Ehrlich Pest Control are here to help. Contact us for safe, effective removal today!
Yes, European hornets sting in defense of their nest or if they feel threatened. Unlike honeybees, they can sting multiple times. Their smooth stingers allow them to sting repeatedly without dying.
European hornets are social wasps that form big colonies. They are distinct from other species due to their size, nocturnal foraging behavior, and ability to spray venom at potential threats. Their large, concealed nests and unique coloration also distinguish them.
European hornet colonies can host from 200 to 400 members – and sometimes up to 1,000 members – at their peak in late summer.
The colony size fluctuates based on environmental factors. These colonies begin small in spring with a single queen laying eggs but quickly grow as more workers hatch and assist in expanding the nest and caring for additional offspring.
Typically, sugary foods like ripe fruit, sap, and nectar for energy. They’re also drawn to protein sources, hunting other insects to feed their larvae. These hornets are unique among wasps because they are active at night and are attracted to artificial lights, making them more noticeable after dusk.
Yes, European hornets are an invasive species in the United States, introduced in the mid-1800s. They have since established themselves across much of the eastern U.S
Removing food sources like sugary spills or ripe fruit can help. Reducing outdoor lighting at night can also help, as European hornets are drawn to lights. Sealing entry points on structures prevents nesting indoors.
Professional pest control measures can safely and effectively remove hornet nests, especially if they are close to areas of frequent human activity.
European hornets can be a serious concern, especially when they establish nests near homes or businesses. Due to their defensive nature and large colonies, professional pest control services can ensure safe and effective removal without increasing the risk of stings or property damage.
For safe and effective hornet control, trust the experts at Ehrlich Pest Control. Our trained specialists use proven methods to handle European hornets and protect your property.
Contact Ehrlich Pest Control today!
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