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Brown Marmorated Stinkbug

A brown marmorated stink bug is shown in Kalamazoo, Mich.
Michigan State University Department of Entomology

If you've seen a small shield-shaped brown insect slowing crawling on the walls inside your home, you might be housing one of Michigan's newest invaders: the brown marmorated stink bug.

This particular stink bug doesn't harm humans. They don't bite or spread disease, but they do eat plants and tree fruit. Since they first hitchiked to the United States about 20 years ago, but weren't seen in Michigan until 2010, they have become a pest to farmers and gardeners alike.  

The brown marmorated stink bug is identified by its antennae and legs.
Rutgers University

The bug looks like this: