Minnesota First Detectors

Brown Marmorated Stink Bug

Minnesota First Detectors

Outline

History/Distribution

Identification

Life History

Why is it Important?

Control

Minnesota First Detectors

History/Distribution

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

USDA-NIFA SCRIwww.stopbmsb.org

First arrived in PA in mid-1990’s, steadily spreading from there

Now found in 40 states and 1 province

Minnesota First Detectors

History/Distribution

Particularly high numbers in eastern U.S. in 2010

Caused economic loss in some crops

Minnesota First Detectors

History/Distribution

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

Probably associated with package received from eastern U.S.

Minnesota First Detectors

Distribution in MN

Nearly all BMSB have been found in homes/buildings, just 1 or 2 at a time

Infestation found in Chisago Co. in 2013

Nymphs present -evidence of overwintering

Minnesota First Detectors

BMSB Survey in MN

Survey using pyramid traps in 2014

Set up throughout MN MDA looking for

volunteers to help monitor traps

B. Butler

Minnesota First Detectors

Stink Bug Identification

Stink bugs are shield or badge shaped

Possess large triangular plate on back

Minnesota First Detectors

Stink Bug Identification

Possesses needle-like mouthparts

Minnesota First Detectors

BMSB Identification

½ inch long Mottled brownish

and grayish Has banded

antennae Banded on edge

of abdomen Dark colored veins Whitney Cranshaw

Minnesota First Detectors

BMSB Identification

Metallic greenish gold flecks on underside of BMSB

Minnesota First Detectors

BMSB Identification

Young nymphs yellowish brown, mottled with black and red

David R. Lance

Minnesota First Detectors

BMSB Identification

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

Start to develop green gold flecks on underside as older nymph

Susan Ellis

Minnesota First Detectors

Don’t Confuse BMSB With…

Squash bug

Western conifer seed bug

Other true bugs

Minnesota First Detectors

Don’t Confuse BMSB With…

Native stink bugs

Native stink bugs

Gerald J. Lenhard, LSU

Minnesota First Detectors

Comparison of insects that might be confused with BMSB

Brown marmorated stink bugs

Native stink bugs

Masked hunter WCSB Squash bug BEB

Minnesota First Detectors

Which is BMSB?

0%

0%

0%

A B C

A. Insect A

B. Insect B

C. Insect C

Life CycleJan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Feeding occurs

Active

Hibernating

Minnesota First Detectors

Why Is It a Pest?

Feeds on more than 300 plants

Ornamental and nursery plants, e.g. crabapple, maple, rose, viburnum, catalpa, hackberry, dogwood, willow, lilac

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

Gary Bernon

Minnesota First Detectors

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

Minnesota First Detectors

Why Is It a Pest?

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

Can be present in large numbers

Can emit pungent odor

Susan EllisSusan Ellis

Minnesota First Detectors

Control

Pesticides are main option for now

Relying solely on pesticides not long-term solution

Research into possible biocontrol agent – tiny parasitic wasp that attacks eggs

Susan Ellis

Minnesota First Detectors

0%

0%

0%

0%

0% A. Eastern U.S.

B. Upper Midwest

C. Southern U.S.

D. Pacific Northwest

E. Not sure

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

Minnesota First Detectors

0%

0%

0%

0% A. 10

B. 30

C. 300

D. 3000

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

Minnesota First Detectors

Questions?