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Emerald Ash Borer (Agrilus planipennis)
Photo#603429
Copyright © 2011
john and jane balaban
This is a test.... -
Agrilus planipennis
Harms Woods Forest Preserve, Glenview, Cook County, Illinois, USA
December 5, 2011
Let's see who knows who makes these holes. :-)
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Contributed by
john and jane balaban
on 23 December, 2011 - 9:39pm
Last updated 8 May, 2012 - 1:17pm
Moved
Moved from
ID Request
.
Definitely worth keeping, I think. Incidentally, the wood boring damage on the cover of
(
1
)
is also EAB.
I think black ash has particularly dark buds, but I don't know if that's how it got its name.
…
Charley Eiseman
, 24 December, 2011 - 9:41am
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Black buds
I just checked Mohlenbrock's
Forest Trees of Illinois
: Black Ash is indeed the only
Fraxinus
with black buds, the others (Green Ash, White Ash, Pumpkin Ash) are brown (except Blue Ash with gray buds). Black Ash also lacks the diamond-shaped bark pattern of the common Green and White ashes (where I went astray).
…
John Pearson
, 24 December, 2011 - 10:01am
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Looks like you need to fix some of your links, John
A couple of the images you refer to are missing. You must have mis-typed some of the reference numbers. The bark is unusual, isn't it? This is (was, we guess, is more correct) one of our rarer ashes, the Black Ash, Fraxinus nigra, which surprisingly, given its name, has very light colored bark, and were doing very well, until this year, in the wetter areas of the woodlands. But as you all guessed, the Emerald Ash Borer has come to town and it is amazing to see what they have done. The young ash seedlings and saplings are still thriving and numerous. We haven't read enough to know whether they can outlast the population explosion of the EAB.
Should we move this to the EAB page? Or just to frass, since it doesn't show the insect?
…
john and jane balaban
, 24 December, 2011 - 9:31am
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EAB
Personally, I find images like this to be very helpful! Since there are no images of these holes on the EAB page, I vote for keeping it!
…
Corey Husic
, 24 December, 2011 - 9:41am
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Seconded
I added a thumbnail to my
Invasive Species article
…
Chuck Entz
, 24 December, 2011 - 2:23pm
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I'll try...
1) The D-shaped exit holes are typical of metallic wood-boring beetle larvae (Buprestidae),
2) The bark of the tree looks to me like that of a white oak (
Quercus alba
),
3) When I ran a BG Advanced Search for "Buprestidae", "oak", and "Illinois", these records came up:
I could not help but notice that they were from the same site and by the same observers earlier in the same year!
If this is an ash tree, then it could be:
...also previously observed at this site by the same observers!
Finally, the third record:
Ditto.
…
John Pearson
, 24 December, 2011 - 8:58am
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EAB?
…
Brad Barnd
, 23 December, 2011 - 9:48pm
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uh-oh
This better not be what I think it is...
…
Corey Husic
, 23 December, 2011 - 9:47pm
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