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May 8, 2010

Bald-Faced Hornets

The bald-faced hornet (or white-faced hornet) is not a true hornet at all. It belongs to a genus of wasps called yellowjackets in North America, and is more distantly related to true hornets like the Asian giant hornet or European hornet, but the term "hornet" is often used colloquially to refer to any vespine with an exposed aerial nest.

The bald-faced hornet lives throughout North America, including southern Canada, the Rocky Mountains, the western coast of the United States, and most of the eastern US. They are most common in the southeastern United States. They are best known for their large football-shaped paper nest, which they build in the spring for raising their young. These nests can sometimes reach 3 feet tall. Like the median wasp Dolichovespula media in Europe, bald-faced hornets are extremely protective of their nests and will sting repeatedly if disturbed.

Every year young queens that were born and fertilized the previous year start a new colony and raise their young. The workers expand the nest by chewing up wood that mixes with a starch in their saliva, which they spread with their mandibles and legs to dry into paper. The workers also guard the nest and collect nectar and arthropods to feed the larvae. This continues through summer and into fall. As winter approaches, the wasps die, except for young fertilized queens which hibernate underground or in hollow trees. The nest is generally abandoned by winter, and will most likely not be reused. When spring arrives the young queens emerge, and the cycle begins again.

If you're concerned that you have hornets around your home or place of business, give Dave a call at 1-800-400-6009.

Dave's Pest Control Serving Central Massachusetts
http://www.davespestcontrol.net

1 comment:

  1. I had bald faced hornets in my backyard, and then found out they had a nest high up in one of my trees. They are definitely a pest that is meant for the professionals to come out and handle.

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