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

Minnesota First Detectors 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?

USDA-NIFA SCRI 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  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 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 WCSBSquash bug BEB

Minnesota First Detectors Which is BMSB? ABC A. Insect A B. Insect B C. Insect C

Life Cycle JanFebMarAprMayJunJulAugSepOctNovDec Feeding occurs Active Hibernating

Minnesota First Detectors A. 10 B. 30 C. 300 D On about how many different kinds of plants does BMSB feed?

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 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 Questions?