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Brown Marmorated Stink Bug

Brown Marmorated Stink Bug. Outline. History/Distribution Identification Life History Why is it Important? Control. History/Distribution. Originally from e astern Asia, incl. China, Korea, and Japan. Where in the U.S. are BMSB most c ommon?. Eastern U.S. Upper Midwestern

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Brown Marmorated Stink Bug

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  1. Brown Marmorated Stink Bug

  2. Outline • History/Distribution • Identification • Life History • Why is it Important? • Control

  3. History/Distribution • Originally from eastern Asia, incl. China, Korea, and Japan

  4. Where in the U.S. are BMSB most common? • Eastern U.S. • Upper Midwestern • Southern U.S. • Pacific Northwest • Not sure 0 of 30

  5. USDA-NIFA SCRI from www. stopbmsb.org

  6. History/Distribution • First collected in PA in mid 1990’s (not confirmed until 2001)

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

  8. 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!)

  9. History/Distribution • First found in St. Paul (Ramsey Co.) in Nov. 2010 in MDA building • Possibly associated with package received from eastern U.S.

  10. 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 All were found in homes/buildings

  11. Identification • Stink bugs are shield-shaped • Possess large triangular plate on back • Well developed scent glands

  12. Identification Possesses piercing-sucking mouthparts

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

  14. Identification • Metallic greenish gold flecks on underside of BMSB

  15. Identification • Young nymphs yellowish brown, mottled with black and red David R. Lance

  16. Identification • Older nymphs darker, with light bands on dark legs and antennae Susan Ellis

  17. Don’t Confuse BMSB With… Other true bugs Western conifer seed bug Boxelder bug

  18. Don’t Confuse BMSB With… Native stink bugs Native stink bugs

  19. Comparison of insects that might be confused with BMSB Brown marmorated stink bugs Native stink bugs Masked hunter BEB WCSB Squash bug

  20. Which is BMSB? • Insect A • Insect B • Insect C A B C 0 of 30

  21. 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

  22. Life History • Nymphs feed throughout summer • Mature into adults by fall • One generation per year • Can see adults through most of year Gary Bernon

  23. On about how many different kinds of plants does BMSB feed? • 10 • 30 • 300 • 3000

  24. 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

  25. Why Is It a Pest? Gary Bernon • 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

  26. 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

  27. 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

  28. 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 Susan Ellis

  29. 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

  30. Questions?

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