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 Midwestern C. Southern U.S. D. Pacific Northwest E. Not sure Where in the U.S. are BMSB most common?

Minnesota First Detectors USDA-NIFA SCRI from www. stopbmsb.org

Minnesota First Detectors History/Distribution First collected in PA in mid 1990’s (not confirmed until 2001)

Minnesota First Detectors History/Distribution BMSB numbers particularly high in eastern U.S. in 2010 (due to weather?) Caused economic loss in some crops

Minnesota First Detectors History/Distribution In , BMSB (i.e. crop damage) were not as consistently high as in 2010 Not in high numbers in MN (yet!)

Minnesota First Detectors History/Distribution First found in St. Paul (Ramsey Co.) in Nov in MDA building Possibly associated with package received from eastern U.S.

Minnesota First Detectors 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

Minnesota First Detectors Identification Stink bugs are shield-shaped Possess large triangular plate on back Well developed scent glands

Minnesota First Detectors Identification Possesses piercing-sucking mouthparts

Minnesota First Detectors Identification About ½ inch long Mottled brownish and grayish (marmorated = marbled) Has banded antennae Banded abdomen Dark colored veins Whitney Cranshaw

Minnesota First Detectors Identification Metallic greenish gold flecks on underside of BMSB

Minnesota First Detectors Identification Young nymphs yellowish brown, mottled with black and red David R. Lance

Minnesota First Detectors Identification Older nymphs darker, with light bands on dark legs and antennae Susan Ellis

Minnesota First Detectors Don’t Confuse BMSB With… Boxelder bug Western conifer seed bug Other true bugs

Minnesota First Detectors Don’t Confuse BMSB With… Native stink bugs

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

Minnesota First Detectors 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

Minnesota First Detectors Life History Nymphs feed throughout summer Mature into adults by fall One generation per year Can see adults through most of year Gary Bernon

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 plants Nymphs have shorter mouthparts, feed more shallowly Adults feed more deeply and cause more severe damage Stephen Ausmus

Minnesota First Detectors 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

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? 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

Minnesota First Detectors 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 Ellis

Minnesota First Detectors 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

Minnesota First Detectors Questions?