Brown Marmorated Stink Bug

Adult BMSB with antennal markings circledWelcome to Michigan State University’s Brown Marmorated Stink Bug website

This site contains information and links for growers and homeowners about a new invasive pest in Michigan, the Brown Marmorated Stink Bug.

2015 Update

  • New tip sheet on brown marmorated stink bugs for homeowners (Oct. 8) – A new resource about brown marmorated stink bug identification and management in homes is now available.
  • Managing brown marmorated stink bugs in homes (Sept. 30) - How to prevent and get rid of brown marmorated stink bugs in your home or building.
  • Report sightings of brown marmorated stink bugs in your home or business (Sept. 25) - Report sightings of brown marmorated stink bugs to the Midwest Invasive Species Information Network in order to help Michigan fruit, vegetable and ornamental plant growers identify potential hotspots.
  • September 15 - Brown marmorated stink bug activity continues to increase in Berrien County; adults and nymphs were found feeding on apples. Damaged peaches by BMSB near Grand Rapids has been reported for the second year in a row.
  • August 31 - Few brown marmorated stink bugs were caught in two monitoring network traps in Berrien County this week.
  • August 25 - Brown marmorated stink bug nymphs were caught in three monitoring network traps in Berrien and Grand Traverse counties this week.
  • August 18 - Only one site near Stevensville, Michigan, is reporting brown marmorated stink bugs in traps this week.
  • August 11 - Brown marmorated stink bugs were captured from the same two hotspots again this week in Berrien and Kent counties.
  • August 4 - First brown marmorated stink bugs captured this season from traps at two urban sites and one apple orchard in Berrien and Kent counties at known hotspots.
  • July 28 - No brown marmorated stink bugs have been found in traps in the monitoring network in the fourth week of trapping.
  • July 21 - No brown marmorated stink bugs have been found in traps in the monitoring network in the third week of trapping.
  • July 14 - No brown marmorated stink bugs were caught in traps this week. Reports of adults captured in homes continue to trickle in.
  • July 7 - More than 60 brown marmorated stink bug traps were set up last week in all of the major Michigan fruit and vegetable producing counties with no captures so far.


The Brown Marmorated Stink Bug (BMSB), Halyomorpha halys (Stål), is an exotic pentatomid species native to Asia. Pennsylvania State University Cooperative Extension first found specimens in Allentown, Pennsylvania, in 1996.

In 1999, a specimen was found in a Rutgers University blacklight trap about 30 miles east of Allentown in Milford, New Jersey. Since that time, specimens have been identified in 29 states, primarily in the Mid-Atlantic region but with additional populations in Oregon and Southern California. Midwestern populations of BMSB were found in Ohio in 2007, Illinois in 2009 and in Michigan in fall 2010. As with many other invasive species, the distribution is likely spread wider than reported.

What crops are affected?

Brown marmorated stinkbug has a host range of over 300 plants including many agricultural and ornamental crops. Feeding damage has been recorded in high value specialty crops including tomatoes, sweet peppers, raspberries, apples, peaches, pears and cherries as well as damage in corn and soybeans.

Status in Michigan

In fall 2010, BMSB was detected in Michigan for the first time. Up to this point, BMSB have been detected in very low numbers in Michigan, generally by homeowners who have found them overwintering in their homes. Our network of traps is being used to provide early warning should population increases of BMSB occur in areas where susceptible crops are grown.

What to do if you have a suspect BMSB?

Place it in a box (dry) with tissue paper or in white vinegar and mail or drop off to:
Howard Russell
Diagnostic Services
Michigan State University
101 Center for Integrated Plant Systems
East Lansing, MI 48824

Be sure to include with the specimen the location where you found the insect and your name and contact information (email or phone if no email). See additional tips for submitting insects for identification to MSU Diagnostic Services.


The MSU IPM Program maintains this site as an access point to pest management information at MSU. The IPM Program is administered within the Department of Entomology, fueled by research from the AgBioResearch, delivered to citizens through MSU Extension, and proud to be a part of Project GREEEN.