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COVID-19 Advisory: WSU Extension is working to keep our communities safe. All Extension programming is being conducted consistent with the latest official state guidance. WSU Extension county offices and WSU Research & Extension Centers are following protocols for vaccination, masking, distancing and hygiene. If this office is not open to the public, we are available during normal business hours via email, phone, and web conference.

Invasive Pests

Program Contact: Keith Mathews
(509) 574-1583 •


Stink Bugs Still At Large in Washington State

Adult Stink Bugs are a well-known family easily recognized by shield-like shape, five-segmented antennae, and for producing a most disagreeable odor when provoked. They can come in various shades of green, brown and black. There are a number of species in this family that are known for unwanted feeding and vandalism of plant crops like raspberries, apples, tomatoes, and peppers. They may attack and damage ornamental plants en mass.

In 1988, a statewide survey revealed 23 species of stink bug in Washington. In 2014, this number was increased to 47 species including the invasive and dreaded Brown Marmorated Stink Bug (middle image) that was found in a handful of counties. We have reasons to believe more stink bugs exist in Washington State.

If you capture any bug that resembles a stink bug, we desperately need the specimen mailed to us along with information that provides us with where (the town or county or GPS location captured), when (date) and on what host plant they were found on.

Please mail (freeze them for 24 hours and place them in a plastic pill bottle) suspected stink bugs to your local Master Gardener Program at Yakima County Extension Office, 2403 S 18th Street, Suite 100, Union Gap, WA 98903. Digital images sent to may be acceptable as well.

This Wanted Poster is set to expire 12/30/2016