Hornets

Identification

  • Colour Black, white, yellow, reddish-brown
  • Size About 12 -30 mm long
  • Description Have long antennae made of up to 13 segment, and two pairs of wings, with the front ones longer than the hind ones.

General Facts

Why do I have hornets?

There are many species of hornets in Canada, but all can be divided into two categories - vespula and dolichovespula. Each have their own characteristics. Vespula hornets include European, western, and common hornets and build nests in the ground or a similarly concealed site. Dolichovespula hornets include Norwegian, northern aerial, and bald-faced hornets and nest several metres off the ground. In the outdoors, hornets build nests in shrubberies, below ground, in hollow trees, under bark, and in rock piles. Nests usually house up to 400 hornets. Around homes, they nest in wall voids, attics, in window frames, or hanging from eaves, gaining entry through cracks in the building foundation, broken window or door screens, and similar openings. Hornets like to eat fruit juices, honeydew, nectar, and other sweet liquids like soda, but feed their larvae carrion, prepared meat, soft-bodied insects like crickets, grasshoppers, large flies, caterpillars, and even the workers of other wasp and hornet species.

How worried should I be about hornets?

Hornets are aggressive and very protective of their nests. If hornets detect a threat to the colony, they will inflict an extremely painful sting, which can cause fatal anaphylactic shock to an allergic person, if not treated immediately. Although hornets can be beneficial by controlling other pest insects, some species can damage trees and shrubs by girdling branches for nest-building materials and sap. As hornets can travel long distances, sting painfully, and use flowers and other insects as food sources, they can be difficult to remove and keep out. Only a professional pest control service can eradicate a hornet infestation and remove a hornet nest safely.

How can I prevent hornets invading?

Look for grey, papery nests, Seal cracks and voids in walls with caulk, Replace ripped or broken screens

Other pests related to Hornets

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