Date: 12/27/20 10:52 am
From: John Snell <jrsnelljr...>
Subject: Re: [VTBIRD] Invasive insects while birding
Yes, it is good to be on the lookout for signs of invasive insects. It is also, however, VERY difficult to find them! There are several other species of boring insect that are common in Ash trees. If you see the “blonding” patterns noted in the handout, before jumping to the conclusion that it is Emerald Ash Borer, look for other signs, especially “epicormic shoots;” these clusters of small vertical branches and/or a canopy with dead branches are more reliable signatures, although, again, both is not uncommon in declining Ash for various reasons other than EAB. Seeing the D-shaped holes, typically on the south side of the top of the tree, is virtually impossible, even with binoculars.

John Snell
Montpelier Tree Board


> On Dec 27, 2020, at 12:00 PM, Josephine Hingston <josephine.hingston...> wrote:
>
> How to recognize and report:
>
> "Woodpeckers will fleck bark off ash trees hunting for emerald ash borer,
> and winter is a great time to look for signs of Asian longhorned beetle.
> This article links to a handout on how to distinguish between holes in
> trees from birds and pests, and how to report signs of pests."
>
> https://vtcommunityforestry.org/community/story/calling-all-birders-be-lookout-invasive-forest-pests
 
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