CAPS Update Elm Seed Bug

CAPS Update: Elm Seed Bug

Circled area is where elm seed bugs have been confirmed.

A new bug has been detected in the United States; specifically, in southwestern Idaho. A European native, the elm seed bug (Arocatus melanocephalus) was first detected in Ada and Canyon counties, Idaho, in July 2012. Shortly thereafter, it was detected in Malheur County, Oregon, and suspected in five other Idaho counties.

This invasive insect is being considered a nuisance pest because it overwinters indoors in large aggregations. Its effects on elms in the United States are unknown, but it is not currently considered to be an agricultural pest. You can submit suspected elm seed bugs to the Utah Plant Pest Diagnostic Lab for verification.

-Cory Stanley, USU CAPS Coordinator

CAPS (Cooperative Agricultural Pest Survey) is a federal program, administered jointly by USDA-APHIS-PPQ and each state, whose purpose is early detection of invasive species that could threaten U.S. agriculture. In Utah, the program is co-coordinated by Cory Stanley (USU) and Clint Burfitt (UDAF).