Invasive SpeciesEmerald ash borer

Agrilus planipennis
NOT FOUND by Moss Boss
2017-03-26
Windham
ID Confirmed
Quality checked by self
Peer reviewed by
Field Notes
Due to the heavy brush cover, we could only get to this area of the property during the winter months. Now that the snow is letting up, it is a good time to do some tree work. While removing a dying tree we had believed was stressed from oriental bittersweet, we discovered it was riddled with holes on all sides.
Supporting Evidence
Photo of my evidence.
While the sheer number of holes and the speed at which this infestation killed this tree is a cause for concern. The holes are not D shaped like I would expect if this was EAB (a characteristic marker).
Photo of my evidence.
Every photo I've seen of EAB grubs show them as being skinnier and with more distinct segments. These grubs were pretty stocky by comparison, so I don't think they are EAB grubs. It was difficult to photograph cleanly, but the galleries didn't look s-shaped, another characteristic of EAB. At best, they were "c-shaped".
Photo of my evidence.
I am also unsure if this is an ash tree (it has mostly been a kickstand for massive multi flora rose bushes and bittersweet). I was never that good at dendrology, so I can't tell what species the tree is without leaves... The bark looks like it's a little ash-ey to me, so I'm not confident saying that this is NOT an ash. EAB needs ash as a host, so I would appreciate some help identifying this tree.
Species Observation: Species Looked For
Did you find it?: 
I think I did not find it
Scientific name:
Agrilus planipennis
Common name:
Emerald ash borer
Sampling method: 
Just looking around
Photo of our sampling method.
Place Studied
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Map this species
Latitude: 
N 43.770441 °
Longitude: 
W -70.417536 °
Observation Site Information
A photo of our study site.
Habitat: 
Upland - Field
Trip Information
Name:
Back yard
Trip date: 
Sun, 2017-03-26 09:36
Town or city: 
Windham
Type of investigation: 
Species Survey
Ecosystem: 
Upland
Watershed: 
Presumpscot

Comments

Sorry this languished!

So, you are correct these are not EAB--these look to be roundheaded borer larvae (Cerambycidae).

The host to me looks elm, but I can't say for sure with the evidence in the photo. I actually much prefer leaf off, bud characters for tree ID, so images with portions of twigs containing buds are helpful. Key for this pest is whether the branching is opposite or alternate and the relative stoutness of the finer twigs.

In the twigs on the photo I can't tell if the branching patter is opposite or alternate. If opposite, it is a strong indication this is ash.

The look-alike I suspect is elm (alternate). If elm, a suspect for a tree of this apparent size is Dutch elm disease, which tends to hit elms when they are small pole-sized or larger (attractive to the fungus-vectoring beetles). The insects could well be (and are likely)secondary agents of death.

Looks like you have been working hard back there!! And in the midst of all that work, you found time to look closely for this invader. Did you remove all the autumn olive? Is that even possible? On the bright side, more jam ;)

Thanks for sharing, Moss Boss!

-Sniffly