Brown Marmorated Stink Bug

Adult BMSB with antennal markings circled

With recent warmer temperatures, brown marmorated stink bugs are starting to appear in homes and buildings. See our tip sheet on stink bug identification and management in homes.

Questions on reporting BMSB? See “Brown marmorated stink bugs are moving into Michigan homes again” or email Julianna Wilson at .(JavaScript must be enabled to view this email address). If you have already reported a sighting from a particular address, you do not need to report from that address again.

2017 weekly reports

  • Aug. 1 BMSB report - Fruit and vegetable growers across the southern Lower Peninsula should be scouting and preparing to actively manage for brown marmorated stink bugs this season.

Key articles


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 stink bug 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, cherries and grapes (particularly as a contaminant during wine making) as well as damage in sweet corn, green beans and soybeans.

Status in Michigan

The first Michigan detection was in Berrien County in 2010, followed several years later by reports of fruit damage suspected of being caused by BMSB in orchards. Reports from several thousand Michigan residents as of spring 2016 indicate that BMSB populations have built up to nuisance levels in manmade structures in the southern Lower Peninsula. All together, BMSB has been reported in 46 Michigan counties, including one county in the Upper Peninsula.

What to do if you have a suspect BMSB?

Place it in a dry box with tissue paper or in white vinegar and mail or drop off to:
Howard Russell
Diagnostic Services
578 Wilson Rd., Room 116
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.