June 2009 Oregon Invasive Species Council calendar events
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What is a Emerald Ash Borer?
Native to Asia, the Emeral ash borer was introduced to Michigan inthe 1990s and is spreading rapidly. Emerald ash borer larvae are wood borers that feed in the inner bark of ash trees, disrupting the trees ability to transport water and nutrients.It takes 1 to 3 years for an infected tree to die.The borers attack true ashes (Fraxinus spp.) and cause 100% mortality of infested trees. The emerald ash borer in Oregon would be devasting to native ash tress, landscape ash trees, and the nursery industry. It has the potential to eliminate all ash trees from North America.Adults are 3/8 of an inch long, but are unlikely to be seen.Instead, look for larval feeding tunnels under bark (upper right photo), canopy dieback, bark splitting and suckering.
Where?
Ash trees
Lookalike?
Yes, there are many species of metallic wood borers in various colors and sizes. None of the native ones attack living ash trees.
What can you do?
If you see this beetle or find ash trees with sigs of damage, immediately report the information by calling 1-866-INVADER or www.oregoninvasiveshotline.org.
