Early & Ongoing Monitoring of Invasive Pests

Early & Ongoing Monitoring of Invasive Pests

Spotted wing drosophila

Brown marmorated stink bug is identified by the black & white pattern around the abdomen and antennae, & rounded shoulders. Also the only stink bug that would "invade" homes for the winter.

In Utah, agricultural commodities are largely grown along the major N-S interstate highway, which makes this state vulnerable to introduced exotic pests and increases the likelihood of their spread once introduced. It is therefore critical that Utah crops be safeguarded and regularly monitored for invasive pests. In 2013, the Utah Cooperative Agricultural Pest Survey (CAPS) program will survey agricultural and horticultural crops for various exotic pests, including insects and plant pathogens, and will set and monitor more than 400 traps statewide.

Two of the insects that will be targeted this year are the spotted wing drosophila (Drosophila suzukii) and the brown marmorated stink bug (Halyomorpha halys).

The spotted wing drosophila (SWD) is a pest of soft fruit such as raspberry, cherry, strawberry and peach, and was first was first detected in Davis County, Utah in 2010. Male SWD can be identified as having one spot per wing. Female SWD have saw-like ovipositors which enable them to lay eggs in ripe and ripening fruit. The larvae feed inside the fruit, causing the fruit to become soft and unmarketable.

The brown marmorated stink bug (BMSB) feeds on a wide variety of host plants, including apples, peaches, corn, and tomatoes. The BMSB also poses a problem for residences when it searches for protected, overwintering sites indoors. BMSB is shield-shaped with light bands on the antennae and distinct white triangles on the rear of the front pair of wings. In the fall of 2012, BMSB was found for the first time in Utah in Salt Lake County.

If you believe that you’ve seen one of these pests or if you have suggestions for trapping sites, please contact Lori Spears, USU CAPS Coordinator (lori.spears@usu.edu).

-Lori Spears, USU CAPS Coordinator


The 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 Lori Spears (USU) and Clint Burfitt (UDAF).