The elm seed bug has come to stay for the summer. Native to Europe, this pest didn’t live in Utah 10 years ago. Over time it has become more and more common along the Wasatch Front and in Cache County. The insect gets its name from where it’s found and what it eats: seeds from elm trees.
Easily confused with the boxelder bug because of its brown and black colors, the elm seed bug doesn’t harm elm trees or humans. It’s a nuisance, though, because of the odor it lets off. When the bug is squashed or killed, it gives off a bitter almond smell.
They invade homes from late May to September and are hard to get rid of. Pest sprays will keep the bugs away. Tight window screens, and no cracks in the caulking around the window frame, will keep the bugs out. Doors with tight sweeps will stop the bugs (and other nuisance pests) from entering the house.
Photo Credit: Pat Cassidy