Brown Marmorated Stink Bug

Minnesota First Detectors

Brown Marmorated Stink Bug

Minnesota First Detectors

Outline

History/Distribution

Identification

Life History

Why is it Important? Control

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History/Distribution

Originally from eastern Asia, incl. China, Korea, and Japan

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A. Eastern U.S.B. Upper MidwesternC. Southern U.S.D. Pacific NorthwestE. Not sure

Where in the U.S. are BMSB most common?

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USDA-NIFA SCRI from www. stopbmsb.org

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History/Distribution

First collected in PA in mid 1990’s (not confirmed until 2001)

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History/Distribution

BMSB numbers particularly high in eastern U.S. in 2010 (due to weather?)

Caused economic loss in some crops

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History/Distribution

In 2011-2012, BMSB (i.e. crop damage) were not as consistently high as in 2010

Not in high numbers in MN (yet!)

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History/Distribution

First found in St. Paul (Ramsey Co.) in Nov. 2010 in MDA building

Possibly associated with package received from eastern U.S.

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All were found in homes/buildings

Distribution in MN:1- Ramsey Co.1- Washington Co.3- Anoka Co.1- Winona Co. 4- Hennepin Co.1- Chisago Co.1- Carver Co.1- Dakota Co.

As of December, 2012

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Identification

Stink bugs are shield-shaped

Possess large triangular plate on back

Well developed scent glands

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Identification

Possesses piercing-sucking mouthparts

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Identification

About ½ inch long Mottled brownish

and grayish (marmorated = marbled)

Has banded antennae

Banded abdomen Dark colored veins Whitney Cranshaw

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Identification

Metallic greenish gold flecks on underside of BMSB

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Identification

Young nymphs yellowish brown, mottled with black and red

David R. Lance

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Identification

Older nymphs darker, with light bands on dark legs and antennae

Susan Ellis

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Don’t Confuse BMSB With…

Boxelder bug

Western conifer seed bug

Other true bugs

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Don’t Confuse BMSB With…

Native stink bugs

Native stink bugs

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Comparison of insects that might be confused with BMSB

Brown marmorated stink bugs

Native stink bugs

Masked hunter WCSB Squash bug BEB

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Which is BMSB?

A B C

A. Insect AB. Insect BC. Insect C

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Life History

Overwinter as adults

Emerge about May Between June and

August, lays about 28 eggs at a time on undersides of leaves

Can lay eggs several times

David R. Lance

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Life History

Nymphs feed throughout summer

Mature into adults by fall

One generation per year

Can see adults through most of year

Gary Bernon

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A. 10B. 30C. 300D. 3000

On about how many different kinds of plants does BMSB feed?

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Why Is It a Pest?

Feeds on 300 + plants Nymphs have shorter

mouthparts, feed more shallowly

Adults feed more deeply and cause more severe damage

Stephen Ausmus

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Why Is It a Pest? Ornamental and

nursery plants, e.g. crabapples, maples, rose, Norway maple, white ash, viburnum, catalpa, hackberry, dogwood, willow, lilac

On leaves generally appears as small stippled areas and/or necrotic areas

Gary Bernon

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Why Is It a Pest?

Crop pest: - Fruits, e.g. apple, blackberry, peach, grape, raspberry- Vegetables, e.g. sweet corn, bean, peas, tomato, pepper- Field crops, e.g. soybeans, field corn

Gary Bernon

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Why Is It a Pest?

Can feed directly on fruits and vegetables

Injury through removal of plants cells and injecting saliva

Can cause water-soaked lesions, pitting, dimples, catfacing, depressed areas, warty growths

USDA

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Why Is It a Pest?

Nuisance invader in structures in fall, like boxelder bugs and multicolored Asian lady beetles

Has well developed scent glands!!

Susan EllisSusan Ellis

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Control

Use of insecticides, although control challenging, not always effective This is not long-term

solution Research into possible

biocontrol agent – tiny parasitic wasp that attacks eggs

Susan Ellis

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Questions?