Five Invasive Insects Utah Residents Are Asked To Report

Law enforcement keeps a list of the top ten criminals to keep an eye out for and agriculturists have a similar list, but for bugs. Invasive species can have a big impact on Utah's environment. Here are the top 5 bug invaders that you should report immediately if you see one.

#5 Most Not Wanted: The Asian Longhorned Beetle

A longhorn beetle rests on a green blade of grass — Photo by Thomas Elliott on Unsplash

If you see this inch long beetle with antennae and white spots, report it immediately. It can damage over 100 kinds of hardwood trees. It has spread from the east coast all the way to Illinois.

#4 Most Not Wanted: Emerald Ash Borer

This is considered the most destructive pest to invade North America from Asia. It destroys Ash trees. Look for a metallic green body with a bronze head. It has invaded parts of Colorado and was recently found in Washington.

#3 Most Not Wanted: Japanese Beetle

A japanese beetle rests on a white flower petal — Photo by Erik Karits on Unsplash

This one is high on the list because it has invaded Utah before. Since 2023 major eradication efforts were made, but it will likely show up again. It damages grass and ornamental plants. 1/2 inch long with a metallic green head with a copper abdomen.

#2 Most Not Wanted: Spongy Moth

These were eradicated in Utah but a new subspecies has shown up in Oregon and Washington. The larvae damage many tree species. They are grayish brown moths and have an inverted "V" on their wings.

#1 Most Not Wanted: Spotted Lanternfly

A spotted lanternfly rests on a green leaf — Photo by Tao Yuan on Unsplash

This fly sucks the sap from trees and plants and does all kinds of damage. It has spread through the Midwest. Adults are an inch long with a sucking part to their head. Wings with black and white spots and females includes red.

If you see any of these bugs in Utah, report them to the Utah State University Extension office. Early detection is crucial to keep Utah free of these pests.