Tag Archives: wasp nest

Behold the Home of the Bald-faced Hornet

Hanging Nest of the Bald-faced Hornet
Twelve-inch high Nest of the Bald-faced Hornet
Exit Hole on the Underside of Bald-faced Hornet Nest
Exit Hole on Underside of Bald-faced Hornet Nest

This foot-long nest belongs to a colony of Bald-faced Hornets. The name Bald-faced Hornet is doubly misleading. First, the insect is actually a wasp, not a true hornet. Second, the adjective “bald-faced” suggests a lack of facial features, but “bald” is simply an unfortunate shortening of “piebald,” which means having a black and white design. Bald-faced hornets are aggressive, swarm, and can sting multiple times. They have been known to fly past several people to target the exact individual who disturbed their nest and to remember the attacker for up to a week.

The beautiful design of the nest belies the danger within. Its scallop-shaped layers are made of a pulp, which the wasps produced by combining organic matter with their saliva. This outer shell is up to twelve layers thick. Inside, tiers of hexagonal honeycomb once housed hundreds of wasps. I use the past tense because I came upon this nest in late September when the inhabitants were probably gone. The queen mother who started building the nest in the spring as well as the hundreds of sterile female workers she reared have all died. Only a few impregnated queen-hopefuls survive and they overwinter elsewhere and will start a new nest next year. But horrors! All summer, this nest had been dangling at waist-level (i.e. within reach of children) just a few feet from a very popular trail in Westwoods!

Paper Wasps in Winter

Nest of Paper Wasps
Wasp hotel with 225 living units.

I found this amazing structure on the ground near my house. Its former inhabitants — paper wasps – had probably been living right under my nose all year in this attached unit under my porch. I counted 225 hexagonal rooms – a major hotel! The hotel is shaped like an umbrella (we are seeing the underside in the picture) with a roof constructed with layers of homemade paper — organic matter that the wasps harvested, then mixed with their saliva, and formed into sheets.

Now, with temperatures in the teens, the wasps are either dead or hiding in crevises or inside my house. Unless there was an unusually plentiful food supply and easy access to warm quarters, the worker wasps would have sacrificed food and shelter (in other words, their lives) for their Queen. When the Queen reemerges, she will discover that her nest is gone. But, if she liked the location (and I hope she did), her offspring will build in the same place. So I’ll be looking out for another creative addition to our house in the spring of 2022.