Michigan brown marmorated stink bug report for September 5, 2014

Five nymph and four adult brown marmorated stink bugs were caught during the week of Aug. 29 to Sept. 4, 2014, at five sites in Berrien, Lenawee and Monroe counties.

Brown marmorated stinkbug nymph. Photo credit: Steven Valley, Oregon Department of Agriculture, Bugwood.org

Brown marmorated stinkbug nymph. Photo credit: Steven Valley, Oregon Department of Agriculture, Bugwood.org

This is the ninth weekly report of the Michigan State University Extension brown marmorated stink bug (BMSB) statewide monitoring program for 2014.  This monitoring network has been set up to provide early warning should BMSB start showing up in greater numbers in fruit and vegetable production areas.

A total of five nymph and four adult BMSB were captured in traps at five out of the 86 sites being monitored. This is the most we have captured in a single week this season. Two of the sites are in Berrien County and are sites where BMSB was previously detected. One is a non-agricultural site and the other is a commercial peach orchard, and both are near Stevensville, Michigan. Stevensville was a hotspot for BMSB in 2013. The two sites in Lenawee are near Ottawa Lake and Hudson, both at the edge of soybean fields near where BMSB was in 2013. Finally, the site in Monroe is a commercial vegetable field near Dundee and is a new detection.

Because nymphs were caught this week, we are including a photo ofa BMSB nymph to help distinguish it from other species. BMSB nymphs have distinctive white bands around each leg. 

The monitoring network uses pyramid-style pheromone-baited traps set up at sites that favor BMSB, near riparian areas and/or along major transportation corridors in the following counties: Monroe, Lenawee, Oakland, Macomb, Livingston, Ingham, Lapeer, Saginaw and Bay on the east side of the state; and Antrim, Grand Traverse, Leelanau, Benzie, Oceana, Newaygo, Kent, Ionia, Ottawa, Allegan, Van Buren and Berrien on the west side of the state. The majority of the sites in the network include farms that grow a variety of fruit and vegetable crops including apples, tart cherries, sweet cherries, peaches, blueberries, raspberries, tomatoes, peppers and sweet corn. In addition, some of our traps have been placed along roadsides next to field crops, or in urban/suburban areas where homeowners have reported seeing BMSB in the past.

To learn more about how to monitor for the brown marmorated stink bug, distinguish it from other similar-looking stink bugs, what crops it favors, and management strategies should populations reach the threshold where management is necessary, visit MSU’s Brown Marmorated Stink Bug website.

The weekly BMSB statewide monitoring report has been funded through Project GREEEN and Michigan State University Extension. This output is generated through a network of MSU Extension field staff and campus specialists. We would like to acknowledge the following team members and thank them for their weekly scouting efforts and input into this report: Peter McGhee, Michael Haas, Bob Tritten, Mark Longstroth, Brad Baughman, Carlos Garcia, Amy Irish-Brown, Lina Rodriguez Salamanca, Ben Philips, Ben Werling, Mark Whalon, Karen Powers, and Nikki Rothwell.

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