Latest WI Pest: Brown Marmorated Stink Bug

The hits just keep coming, in the form of more unwanted six-legged visitors whose real home is across the oceans.

A tide of offensive bugs has washed over our Lake County neighborhood Pewaukee and Wisconsin in the past two decades: the emerald ash borer and gypsy moth to name a few. All are resident to foreign countries. All have caused environmental and economic mayhem in the United States, where no natural predators exist to control them.

The latest invader winging its way here will literally make a smell.

The brown marmorated insect is ¾-inch long, with a wide back side that tapers to a point, and a rectangular head with long antennae. Native to China and east Asia, the insect has been journeying west since being first discovered in Pennsylvania in 2001.

Its name is well-earned. When disturbed or stepped on, the brown marmorated stink bug emits a strong, odor guaranteed to wrinkle your nose. Probably not a {visitor you'd invite into your Lake County home, right?

Fortunately, the brown marmorated stink bug hasn't arrived in large numbers in Lake County or WI. Stink bug control isn't much of an issue yet. Yet it's only a matter of time.

Farmers hate them for more than their smell. The insects feed on tree fruits, vegetables, sweet corn and soybeans. Mid-Atlantic apple growers sustained an estimated $37 million in crop losses in 2010 to marmorated stink bugs.

The Asian invasive has a cousin that is native to the U.S. The brown stink bug looks a lot like the brown marmorated version, except the colors of their undersides are different. We somehow doubt you'll get that far identifying them, though.

Brown marmorated stink bugs like to winter inside Lake County your house. If you step on one, you'll figure it out quickly. The nose knows. If you see more in your Lake County house or yard, don't crush them – contact The Mosquito Guy to address their presence in a safe, non-smelly fashion.  Unlike these bugs, we'll never stink up your joint.