Brown Marmorated Stink Bug

Adult BMSB with antennal markings circled

It’s fall and brown marmorated stink bugs are starting to appear in homes and buildings. See our tip sheet on stink bug identification and management in homes.

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

2016 Update

  • Sept. 23 - Nymph and adult trap counts continue climbing, especially in the southwest and Fruit Ridge production areas. Fruit and vegetable growers in the southern Lower Peninsula should be scouting.
  • Sept. 16 - Nymphs and adults continue to be captured in traps located in southwest and Fruit Ridge production areas. Fruit and vegetable growers in southern Lower Peninsula should be scouting.
  • Sept. 7 - There was an uptick in brown marmorated stink bug nymphs and adults caught in traps this week. Fruit and vegetable growers in the southern Lower Peninsula should be scouting this season.
  • Aug. 26 - Fruit and vegetable growers in the southern Lower Peninsula should be scouting for brown marmorated stink bugs this season. 
  • Aug. 19 - Fruit and vegetable growers in the southern Lower Peninsula should be scouting for brown marmorated stink bug nymphs this season.
  • Aug. 12 - With first detection of brown marmorated stink bug nymphs occurring this season in southwest Michigan, fruit and vegetable growers in the southern Lower Peninsula should be scouting for nymphs. 
  • Aug. 5 - First detection of brown marmorated stink bug nymphs this season in southwest Michigan; fruit and vegetable growers in the southern Lower Peninsula should be scouting for nymphs.
  • July 29 - Fruit and vegetable growers in the southern Lower Peninsula should be scouting for brown marmorated stink bug this season.

Key articles

Background

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, 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.

Resources

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.