Army cutworm, Euxoa auxiliaris Order: LepidopteraFamily: Noctuidae Description The army cutworm is native to the United States and is widely distributed throughout the west. This species is considered a pest of winter grains, sugar beet, and alfalfa. Outbreaks are...
Pale western cutworm, Agrotis orthogonia Order: LepidopteraFamily: Noctuidae Description Adult moths are light gray and have a wingspan of about 3.8 cm (1.5 inches). The forewings have a white undersurface and several distinct cross lines on the tips. Young larvae are...
Armyworm, Mythimna unipuncta Order: LepidopteraFamily: Noctuidae Description The armyworm is a globally distributed pest that attacks crops in North America, from southern Canada to the southern United States. In the United States, it is widely distributed east of...
Wheat stem sawfly, Cephus cinctus Norton Order: HymenopteraFamily: Cephidae Description The wheat stem sawfly is a prolific pest to wheat in Colorado, causing extensive damage in the eastern parts of the Great Plains. Adult wheat stem sawfly measures about 1.9 cm...
Grasshoppers in Gardens and Small Acreage Order: OrthopteraFamily: Acrididae Grasshoppers are closely related to crickets and katydids. Over 100 species of grasshoppers occur in Colorado and their populations fluctuate from year to year. They may cause serious damage...
