Pests

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Insects and Pests of Carbon County

Below are some of the most troublesome insects and pests encountered throughout Carbon County. If you are interested in other insects or pests please contact the CCWP.

Aphids

Aphids

Aphids


Location:
On plants and trees throughout Wyoming.

Description: 1/16 – 1/4 inch long, Found in various different colors, Have plump, pear shaped bodies with two tubes (cornicles) projecting from their abdomen.

Damage: Aphids feed on plants by sucking juices from the leaves and, at the same time, inject saliva into the host.

Aphids produce honeydew, a clear sticky substance that covers the leaves and ground around the plant.

Aphids feed in clusters and are present for multiple generations.

Management: It is usually not necessary to take action against these natural invaders but chemical insecticides are may be applied if needed.

Black Widow Spider
(Latrodectus hesperus)

Black Widow Spider

Black Widow Spider


Location:
Found throughout Wyoming, Common in garages, barns, sheds, wood piles, etc. (partial to dark, secluded areas.)

Description: Females are the poisonous ones. They are a shiny black with large round abdomens. On the underside of their abdomen they have an hourglass shape that is reddish orange in color.

Damage: Black Widows are generally a timid spider but should you be bit it is necessary to seek immediate medical treatment. The bite may be fatal if not treated.

Box Elder Bugs
(Boisea trivittata)

Box Elder Bug

Box Elder Bug


Location:
Box Elder Bugs are found in and around homes throughout Wyoming. Simply a nuisance bug.

Description: The bugs are usually black in color with bright red beneath the wings and on the abdomen. They are around half an inch in length with three lines running across their head.

Management: Box Elder Bugs are quite resistant to most insecticides. Small infestations can be treated with either laundry detergent applied straight to the bug, or with a vacuum cleaner. Both methods are usually only temporary.

Earwigs
(Forficula auricularia)

Earwig

Earwig


Location:
Found throughout Wyoming. Common in dark, damp areas.

Description: Earwigs are dark brown in color, 3/4 of an inch or so in length, and have large pinchers, or forceps attached to the rear of their abdomen. They do not actually enter ears. They are a predatory/scavenger bug and tend to feed on decaying matter. However, large infestations may damage living plants.

Management: Large infestations can be a nuisance and sometimes threatening and should therefore be treated with insecticide, such as Tempo SC.

White Tail Prairie Dog
(Cynomys leucurus)

White Tail Prairie Dog

White Tail Prairie Dog


Location:
Found throughout the western portion of Wyoming and Colorado, southern portion of Montana, and eastern part of Utah.

Description: White tail prairie dogs are a brownish tan color with a black spot above their eye and on their cheek. They range in sizes of around 14 to16 inches long and the tip of their tail is white.. They reside in large colonies and house in burrows beneath the ground. White tail prairie dogs feed on many of the same grasses and forbs that livestock feed on and they hibernate 3 1/2 to 5 months during the winter depending on the weather.

Management: The white tail prairie dog is a carrier of the plague, which can be passed on to other animals and even humans. Although dangerous, however, the plague is also a major contributor to their management. Often times it is the plague that will wipe out an entire prairie dog colony. Should the colony become too large or problematic, shooting, trapping, poisoning, and fumigation are methods of control that can be utilized.

Richardson Ground Squirrels
(Spermophilus elegans)

Richardson Ground Squirrel

Richardson Ground Squirrel


Location:
The Wyoming ground squirrel is found in Colorado, southern Wyoming, western Nebraska and parts of Utah.

Description: The Richardson Ground Squirrel is very similar in a appearance to the prairie dog except that it tends to be smaller, have a shorter tail and smaller ears. They live in underground colonies but are usually more destructive than a prairie dog due to the fact that the colonies are larger and they have a wider range of habitat. It has been estimated that 20 ground squirrels can eat as much forage as one sheep, and 200 ground squirrels can eat as much as a single cow.

Management: The management techniques for the Richardson Ground Squirrels are very similar to those used in managing the white tail prairie dog.

Grasshoppers

Grasshopper

Grasshopper


Location:
Grasshoppers are located throughout Carbon County but damaging outbreaks most often occur north of Rawlins and the Leo Shirley Basin area. Habitats vary to species; some species are rangeland specific whereas other may be irrigated meadow specific. In addition, some species may be found in several different habitats.

Description: Please contact CCWP, our staff will provide you with assistance on any identification questions and help you determine if you are reaching an economic threshold which requires management.

Damage: Outbreaks go in cycles and CCWP are prepared to help you with these outbreaks financially and with control methods. Timing is critical for control, so please contact CCWP with any concerns early in the season.

   

If you have any questions or need further information regarding the control of these insects and pests please contact the CCWP.

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