Visit our Colorado State Extension Tri River Area for more news, tools and resources.

Close Icon
Welcome to the Colorado State University Extension Western Colorado Entomology web site. This site was created and is maintained by Tri River Area Extension Entomology & Agronomy, and is dedicated to presenting factual information on the insects and insect related issues affecting western Colorado.

Photo Gallery, Hemiptera-True Bugs, Aphids, Cicadas   arrow

Hemiptera-True Bugs


Aphis nerii

MIlkweed aphid
Milkweed aphids can be found on western whorled milkweed across western Colorado.Milkweed aphids

Stink bug
Two spotted stink bug.

Boisea trivittata

Box Elder Bug
View pictures of box elder bugs exhibiting carnivorous behavior.Box Elder Bugs