Stinging Insects

Yellowjackets make their nests underground or in wall voids. Yellow jackets annually produce new colonies that are constructed of paper, produced from ground wood pulp. Nest size varies from 300 to 120,000 cells, averaging 2,000 to 6,000 cells, and usually contains 1,000 to 4,000 workers at its peak. Only the inseminated females hibernate and survive the winter. The founding queen, the workers, and the males all die. 

Baldface hornets are social insects which live in aerial nests. The adults are represented by workers which are sterile females, queens, and males which come from unfertilized eggs and usually appear in the late summer. Only inseminated females over winter and do so in sheltered places. In the spring, she uses chewed-up cellulose material to build a paper carton nest of serval dozen cells covered by a paper envelope. One egg is laid in each cell as it is constructed. The queen feeds the developing larvae arthropod protein material and nectar. The nest will eventually consist of 3-5 rounded paper combs that are open ventrally and attached one below another and are covered with a multi-layered, insulative paper mache envelope. Nest size varies up to 3,500 cells in 5 combs but usually consists of less than 2,000 cells in 3-4 combs and contains 100-400 workers at its peak (range to 636 workers). 

Paper Wasp Nest
Cicada Killer Wasp Nests
Cicada Killer Burrowing
Baldface Hornets Nest
Baldface Hornets Nest


Yellowjackets are marked with yellow and black bands, not hairy. Stinger is not barbed and can sting repeatedly. Yellowjackets feed on insects and other protein rich foods when rearing young. Generally scavengers and often seek sweet foods later in the season. 

Baldface hornet adult workers are about 5/8-3/4″+, queens are 3/4″+. Color black with white pattern on most of face, as 2 angled stripes on thorax towards head, and on last 3 abdominal segments.


Placement of lure traps in the spring is helpful. By doing this it will catch more queens then workers and reduce the amount of nests being made. 

It is recommended that nests are removed in the evening when the stinging insects are lethargic. Soapy water mixture can be sprayed on paper wasps and nests to prevent wasps from flying.  

Depending on size of nest or species of stinging insect you may need to seek professional for removal. 



Identification of the pest is crucial for the correct prescription treatment and will reduce the unnecessary use of pesticides.

Set Action Thresholds

An Action Threshold is the pest population level at which the pest's presences is a :Nuisance, Health Hazard; or Economic Threat

Pest Prevention

As a first line of pest control, habitat modification is one very effective and cost-efficient strategy that presents little of no risk to people or the environment.

Pest Control

Control methods will be determined on the pest management evaluation and prevention.
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