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June 2010- Asian longhorned beetle
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Article Content
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| Invasive Species of the Month |
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June 2010 Invasive Species of the month
Asian longhorned beetle (Anoplophora glasripennis)
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| June calendar events |
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2010 Oregon Invasive Species Council calendar events
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| What is a Asian longhorned beetle? |
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The Asian longhorned beetle( ALB) is about 1 to 1 1/2 inches in length, is black and shiny with white spots and has long antennae that are banded with black and white. It attacks many different hardwood trees, including maple, birch, horse chestnut, poplar, willow, elm, ash, mimosa (silk tree) and sycamore. The beetle larvae feed on living tree tissue and after pupating, emerge through deep, perfectly round exit holes (larger then the diameter of a pencil). After emerging adults feed on twigs and shoots. Tree exit holes may ooze sap, and deposits of frass (insect waste and saw dust) may collect at tree trunk and tree limb bases. Egg deposit sites can be found by looking for dime-sized, dimpled impressions in tree bark. Unseasonable yellowing or drooping of leaves when the weather has not been especially dry are also signs that ALB may be present.
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| Where? |
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Determined by USDA officials to have entered the United States inside solid wood packing material from China, the ALB was first discovered in August 1996 in Brooklyn, NY. Within weeks, another infestation was found in Amityville, NY. In 1998, an infestation was discovered in Chicago; in 2002 and 2004. ALB was detected in New Jersey in 2008.
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| Lookalike? |
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The banded alder borer is native to Oregon. Larvae and adults feed on Oregon ash, California laurel, alder, willows, oak, and several other species. Adults are 1 to 1 1/2 inches long with large black and white banded antennae and black and white markings on the body. The banded alder borer can be distinguished from ALB by the large white marking on the neck and the banded pattern of markings on the back (no irregular white spots). The female fir sawyer, whose hosts only include conifers, is rough and dull in appearance, and has a white dot at the base of its wing cover.
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| What can you do? |
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Know the signs of ALB! Virtually all Asian longhorned beetle infestations have been discovered by alert members of the public.
Signs of Asian longhorned beetle infestations in hardwood trees include:
- dieback of the upper crown
- sawdust around the tree
- dime-sized, round emergence holes
Note: Conifer trees are not hosts of ALB
If you think you have found one of these beetles, please call report it online at http://oregoninvasiveshotline.org/ or call the Invasive Species Hotline at 1-866-INVADER (1-866-468-2337). This number is toll free.
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| Pest Risk Assessment |
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Asian Longhorned Bettle Pest Risk Assessment (pdf format)
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