From USA Today:

Stink bugs, the smelly scourge of the mid-Atlantic, are hitch-hiking and gliding their way across the country. Officially known as the brown marmorated stink bug, sightings of the pest have been reported in 33 states, an increase of eight states since last fall.

"I would say people now regard them as an out-of-control pest," says Kim Hoelmer, a research entomologist at the U.S. Department of Agriculture in Newark, Del.

The bugs have been spotted as far west as California, as far north as Minnesota and as far south as Florida. Only the Rockies and Plains states have escaped thus far. The eight states recently joining the stink bug party are Arizona, Iowa, Georgia, Michigan, Minnesota, Vermont, Washington and Wisconsin, according to the USDA's Greg Rosenthal.

As of late February, stink bugs have been reported in 33 of the 50 states. The worst infestations are in the Mid-Atlantic region. Since last fall, observers in eight new states Arizona, Iowa, Georgia, Michigan, Minnesota, Vermont, Washington and Wisconsin have spotted the pest.

For more, see: Stink bug population spreading across USA