Emerald Ash borer (EAB)-Agrilus planipennis and Red-headed Ashborer - Neoclytus acuminatus

Emerald Ash-borer

I am publishing this post because of many discussions in our neighbourhood.
Questions deal with the detection of the infestation and what to do or protect our ash trees.
Hope the links provided will help to clarify some of the issues surrounding
the infestation of our ash trees in Guildwood.
 

 

The Emerald Ash-borer (EAB) has been discovered in many areas in Canada and the USA.

Agrilus planipennis or Agrilus marcopoli, native of Asia.
Below: Collage shows the damage the beetle causes on trees.
The Emerald Ash-borer has killed millions of ash trees in southwestern Ontario and other areas. Now the beetle has been found in Guildwood as well. The infestation poses a major economic and environmental threat to urban and forested areas. The cost of removing infested trees is quite substantial and a financial burden to many home owners. What can be done to save our trees?

I have found excellent websites about the Emerald Ash-borer includes advise about insectizide options for protecting Ash trees:
http://www.emeraldashborer.info/index.cfm
This Web site is part of a multinational effort in Michigan, Illinois, Indiana, Iowa, Kentucky, Maryland, Minnesota, Missouri, New York, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia, Wisconsin, Ontario and Quebec to bring you the latest information about emerald ash borer.
City of Toronto, Ontario
http://www.toronto.ca/trees/eab.htm
The City of London, Ontario published this identificatonguide:
http://www.london.ca/Trees_Lawns_and_Gardens/PDFs/EAB_identificationguide.pdf



Collage shows the exit holes made by Emerald Ash-borer on one of the ash trees in our neighbourhood.
Recently the beetle was spotted on our porch.
Red-headed Ashborer
Neoclytus acuminatus

We park our car quite often close to a very large and old ash tree in front of our house.
The tree is about 60 -70 years old and showed some decline during the past 15 years.
Dry branches have been removed or broken off.
One day we found an very interesting beetle in our car.

After searching for this beetle on the internet I learned that this is indeed a native Ashborer in Ontario.
Now, I have found more signs of the Red-headed Ashborer.
After taking pictures of infested trees in Robert Bateman Park (a.k.a).Kate Gardener Beltline Park, Toronto I received a comment on my Guildwod Village Blog confirming the Red-headed Ashborer.
Both beetles cause the same damage on trees but look totally different. (see pictures)
Please compare:
Emerald Ash-borer exit holes are most likely to be D-shaped and 3 mm - 1/8".
Red-headed Ashborer exit holes are round and about 6 mm -1/4" .
Reference:
http://www.ento.okstate.edu/ddd/insects/redheadedashborer.htm
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Der Asiatische Eschenprachtkäfer gefährded alle Eschen in den USA sowie in Canada.
Große Gebiete in Nordamerika sind bereits befallen.
Aller Wahrscheinlichkeit wurde der Käfer mit Transportpaletten aus Eschenholz von China in die Vereinigten Staaten eingeführt. Von dort breitete er sich schnell aus.
Es wird befürchtet , dass der Käfer sich im gesamten natürlichen Verbreitungsgebiet
der Gattung Fraxinus in Nordamerika etablieren könnte.

Categories: Agrilus planipennis or Agrilus marcopoli , Emerald Ash-borer , Neoclytus acuminatus , Red-headed ash borer