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We need your help to keep watch for the brown marmorated stink bug. The brown marmorated stink bug (BMSB) is an agricultural, horticultural, and social pest. It's native to Asia and has spread throughout North America and Europe. It isn’t established in New Zealand, but this sneaky pest hitchhikes on passengers and imported goods. We’ve caught them at our border many times. We need everyone’s help to keep an eye out for them.

If you think you’ve found a brown marmorated stink bug – don't kill it.

• Catch it.
• Take a photo
• Call us immediately on 0800 80 99 66.

The brown marmorated stink bug (BMSB), Halyomorpha halys, originally from East Asia, is an invasive pest that is present throughout much of the United States. It is attracted to the outside of houses on warm fall days in search of overwintering sites and can enter houses in large numbers. The brown marmorated stink bug is also a serious economic threat to fruit crops, garden vegetables, and many ornamentals. In a changing climate, agricultural losses from insect pests like BMSB are expected to increase.

USDA ARS scientists are fighting back by developing traps, sequencing the bug’s genome, and testing parasitic wasps as biocontrols. Midwest Climate Hub research fellow, Dr. Erica Kistner-Thomas is contributing to that fight through modeling the potential distribution and abundance of BMSB under future climate scenarios using a bioclimatic niche model. For more on Erica’s work, see: Climate Change Impacts on the Potential Distribution and Abundance of the Brown Marmorated Stink Bug (Hemiptera: Pentatomidae) With Special Reference to North America and Europe.

Provides state, county, point and GIS data. Maps can be downloaded and shared.

The Ministry for Primary Industries (MPI) is on high alert to stop the invasive brown marmorated stink bug from making a home in New Zealand. The bug is likely to start showing up in imported cargo from the northern hemisphere. Brown marmorated stink bug is a serious horticultural pest in the United States and is also starting to spread through Canada and parts of Europe. The Ministry for Primary Industries and industry groups have been working together to prepare for the increased risk.

Biosecurity officials are promising to take tough action against cargo vessels believed to be infested with brown marmorated stink bug during the upcoming risk season. The risk season runs from September to April, when stink bugs from the northern hemisphere are most likely to crawl into cargo heading to New Zealand. Last season, biosecurity officers intercepted more than 2,500 individual stink bugs at the border, mainly on vessels and cargo.

See also: Pacific Northwest Plant Disease Management Handbook

See also: Plant Industry Pest Alerts for more pests

See also: Pest Alerts for more pests

Pest Notes are peer-reviewed scientific publications about specific pests or pest management topics, directed at California's home and landscape audiences.