Leah Bauer, USDA Forest Service Northern Research Station, Bugwood.org
"By failing to prepare, you are preparing to fail." Benjamin Franklin
This invasive beetle, with origins in Asia, was found in Michigan in 2002. In its larvae stage it feeds on vascular tissue directly beneath the bark.
Untreated, the mortality is 100%.
To date, the only effective treatment is a Restricted Use Pesticide (RUP) which requires a licensed commercial pesticide applicator to purchase and supervise the treatment.
"This extremely destructive beetle poses an enormous threat to all of North America’s ash resources. Unlike many other wood boring beetles, EAB aggressively kills healthy and stressed trees; many dying within two to three years after becoming infested. Currently, EAB has no known effective natural enemies in North America. If it is not contained or its effects mitigated, this pest will continue to infest and kill all species of trees in the genus Fraxinus..." US Dept of Agriculture, in their comprehensive Emerald Ash Borer Program Manual.
EAB Management Plan guiding principles: "Prudent canopy conservation, public safety, and fiscal responsibility."
"The most desirable outcome will be achieved when the most current knowledge and science is combined with local urban forest characteristics, resident values and priorities, and community resources and expectations to formulate a managment plan." Society of Municipal Arborist (SMA)
The University of Nebraska has great overview of EAB. Here is a link to their website.