Rangeland Grasshopper and Mormon Cricket

Last Modified: May 30, 2025
Mormon cricket (Anabrus simplex) sitting on a dead tree

Rangeland grasshoppers and Mormon crickets are natural to rangelands (grasslands, shrublands, woodlands, and other plant-heavy areas) in 17 western States. However, when their populations reach outbreak numbers, they can wreak ecological and economic damage, especially when regions are suffering from drought.

These insects eat plant stems and leaves, which interfere with plant growth and seed production. Their appetite can trigger devastating environmental issues, including soil erosion and degradation, nutrient cycle disruption, and water filtration interference. To help landowners treat pest infestations, APHIS oversees the Rangeland Grasshopper and Mormon Cricket Suppression Program.

View Frequently Asked Questions About Grasshoppers and Mormon Crickets in Western States

Larger outbreaks in western States occur every decade or so, but local areas can have larger populations come and go based on environmental conditions and other factors. Here's what to look for:

Rangeland Grasshoppers

These ground-dwelling insects have powerful hind legs that enable them to leap vigorously and escape threats. Most species also have wings that allow them to fly relatively long distances. Sometimes, they're referred to as short-horned grasshoppers to distinguish them from katydids with much longer antennae.

Mormon Crickets

These flightless, shield-backed katydids can migrate great distances. Although they don't fly, Mormon crickets walk or jump in large groups made up of millions or billions of individual insects. The Mormon cricket is the only katydid species known to hatch outbreak populations in the United States.

Report Plant Pests and Diseases

Have you seen this pest or signs of pest damage? Immediately report your findings.
Find your State plant regulatory official
Find your State plant health director

Controlling Grasshoppers and Mormon Crickets

Contact Us

William Wesela

National Policy Manager