Brown Marmorated Stink Bug (BMSB), Halyomorpha halys

The invasive brown marmorated stink bug (BMSB; Halyomorpha halys) was first discovered in Pennsylvania in 2001, and has caused tremendous crop damage in many mid-Atlantic states. Two to three years prior to noticeable crop damage, BMSB may be seen overwintering in people's homes often in large numbers.

As of 2017, reports of BMSB overwintering in Maine structures have been verified from 67 towns in 12 counties. Reports of overwintering populations help experts predict and prepare for subsequent potential crop damage.


map of brown marmorated stink bug reports in Maine

If you believe you have seen this bug in your house, office, garage, etc., please take a photo of it and make a report. We DO NOT need any more reports from towns that have more than 10 verified reports (e.g. Auburn, Berwick, Biddeford, Brunswick, Gorham, Portland, Saco, etc.)


Updated: March 8, 2019