Latest WI Pest: Brown Marmorated Stink Bug

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

A mass of persistent insects has washed over our Racine County neighborhood Pewaukee and Wisconsin in the past 2 decades: the emerald ash borer and gypsy moth to name a few. All are innate to foreign countries. All have caused environmental and economic havoc in the U.S., where no natural predators exist to control them.

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

The brown marmorated stink bug 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-deserved. When smushed or stepped on, the brown marmorated stink bug emits a strong, creature you'd invite into your Racine County home, right?

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

Farmers dislike them for more than their stink. The insects feast 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 relative 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 Racine County your house. If you step on one, you'll figure it out quickly. The nose knows. If you see more in your Racine County home or yard, don't step on them – contact The Mosquito Guy to address their presence in a safe, non-smelly fashion.  Unlike these insects, we'll never stink up your joint.