Habitat
European hornets are not as aggressive as bald-faced hornets, but will nevertheless sting if their colony is disturbed. Hornet nests can be found in locations, such as:
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Attics
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Porches
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Inside wall voids
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Tree branches or hollows
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Thick bushes
Nests
Hornet nests are constructed with paper-like material produced by the insects mixing their saliva together with the wood fibers they gather. Nest location is one of the differences between European hornets and bald-faced hornets. European hornets usually nest in wall voids or in the open portions of attics, while bald-faced hornets usually construct aerial nests in trees or large bushes. Learn more about hornet nests.
Diet
Adult worker diets consist of insects and plant nectar. Fruits and sodas will attract hornets. Learn more about what hornets eat.
Life Cycle
Growing Colonies
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Colonies usually have an annual life cycle. Colony success depends on the ability of hornet queens to survive the cold weather of winter. Fertile hornet queens begin building new nests in the spring and also start laying eggs. As the eggs hatch and become hornet grubs (larvae), queens works to enlarge the nest. This is done by hunting for insects to feed to larvae.
In time, larvae mature, go through a pupal stage, and develop into the first generation of adults. At this point, queens cease work enlarging the nest to focus on laying eggs. The first and subsequent generations of hornet workers assume the role of nest builders, protectors, and food gatherers for the remaining members of the colony.
Mating
Around mid to late summer queens produce eggs that hatch and develop into sexually mature adult male and female hornets. These fertile adults leave their nests, mate, and the new fertile queens begin a new cycle. These queens are the only members of their colonies that have a chance to survive the winter. Once the subsequent spring months arrive, these overwintering queens will emerge to begin building and populating a new nest in a new location.
More Information
Dolichovespula maculata, the bald-faced hornet, resembles a larger version of a common yellow jacket, except they have whitish-colored facial, thoracic, and abdominal markings. European hornets have a reddish-brown head, thorax, first abdominal segment, and legs. Queens are the largest member of the hornet colony.
Bald-Faced Hornets
The bald-faced hornet belongs to the Genus Vespula. Bald-faced hornets are more closely related to yellow jackets than they are to hornets.
Hornet Nest
Hornet nests are composed of a paper substance derived from saliva and wood pulp. They are located within or atop trees, in attic rafters and in other covered areas.
Giant Hornets
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The Vespa Crabro is also known as the European or giant hornet. The giant hornet closely resembles the bald-faced hornet.
What do Hornets Eat?
Hornets are predaceous and feed primarily on other insects. Controlled populations of hornets can assist in pest control, although a nest located near or inside a home may prove extremely dangerous to humans.
Bees and Hornets
Bees are flying insects that feed on pollen and nectar. They have segmented bodies, two pairs of wings and antennae. Of these species, the Western honeybee is most revered.
Pest control professionals should be consulted before attempting to treat any hornet infestation. Hornets are typically aggressive, and some individuals may be allergic to their sting.
European Hornets
This hornet was brought to the U.S. from Europe and is a large brown insect with yellow stripes and a pale face. European hornets eat grasshoppers, yellow jackets and bees.
Hornet Stings
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