Western Colorado Insects

Horticulture and Garden

Ash Borer

Ash borers are serious pests of ornamental ash trees, especially in western Colorado's urban settings. This publication is an overview of its biology and management

Utah State Fact Sheet 36 pdf

Japanese Beetle

These beautifully metallic colored insects are bad news. Both larvae and adults cause a lot of damage. After recently discovering Japanese beetle in the town of Palisade, CO a plan was devised to eradicate and control the destructive pest.



Japanese Beetle Eradication Program in Palisade

Japanese Beetle Quick Facts

Japanese Beetle Fact Sheet

Japanese Beetle
Western States Japanese Beetle Meeting
Topics of Discussion
  • JB situation reports from CO, UT, MT, KS, OR, and CA
  • Chemical and Biochemical Reports
  • Mating Disruption
Listen button a 3 hour recording of the Western States Japanese Beetle Meeting on Jan. 21, 2009

Peach Tree (AKA Crown) Borer

Peach tree borers attack peach, plum and apricot trees wherever they grow in western Colorado. The CSU fact sheet details biology and management.

TRA Article on Peachtree Borer (pdf)

Tomato Curly Top Virus

This virus is transmitted to tomatoes by the beet leafhopper. View the article to see photos of this pest insect and symptoms of tomato curly top virus.

Curly Top Research in the Tri River Area
Adult Leafhopper

Western Cherry Fruit Fly

These little pests moved into the valley not too long ago. They love all types of cherries and if monitoring and control are not initiated early they will get to the cherries before you do.

TRA Fact Sheet on Western Cherry Fruit Fly (pdf) Western Cherry Fruit Fly

Western Grapeleaf Skeletonizer

 

TRA Article on Western Grapeleaf Skeletonizer (shtml)

TRA Article on Western Grapeleaf Skeletonizer (pdf)
Grapeleaf Skeletonizer Larvae

European Paper Wasp

 

TRA European Paper Wasp (shtml)

TRA European Paper Wasp (pdf)

European Paper Wasp Nest

This page was updated on March 3, 2016