Invasive SpeciesHemlock wooly adelgid

Adelges tsugae
FOUND by 71jc41
ID Questioned
Quality checked by pparent
Peer reviewed by
Field Notes
My science teacher and I went out,because in a picture we thought we saw a white bug and a bit of cotton on the tree called Eastern Hemlock. Today we checked again. We found dieing needles today. Its almost summer and I don't think that a tree would be losing its needles right now.
A sketch of our study site.
Supporting Evidence
Photo of my evidence.
I think I have found a invasive bug.This was found on a eastern hemlock. We saw a lot of others last time we went out. This is probably a new tree but it is in Waterboro. I found needles that are dead!
Photo of my evidence.
dead needles of Eastern Hemlock.
Photo of my evidence.
Another one of the things. It has a grayish-green to it's needles. I think it is. Plus, I don't want to be the boy who cried invasive( like Mr.Parent my science teacher).
Species Observation: Species Looked For
Did you find it?: 
I think I found it
Scientific name:
Adelges tsugae
Common name:
Hemlock wooly adelgid
Sampling method: 
Just looking around
Photo of our sampling method.
Place Studied
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Map this species
N 43.582061 °
W -70.700073 °
Observation Site Information
A photo of our study site.
Freshwater - By water's edge
Trip Information
is it here?
Trip date: 
Mon, 2012-05-28 14:39
Town or city: 
Type of investigation: 
Species Survey


I'm so glad that it's not wooly adelgid.....thank goodness!! (you're photo is kind of hard to see, is there another one you could post that would be more clear?) :D

Just wanted you to know that a sample was sent in and the entomologist confirmed that it was not Hemlock wooly adelgid. Thank goodness. Now we cannot let out guard down and we need to continue to monitor. Maybe at some point we can do a more formal survey of the area. If we do, I'll keep you posted. Have a great summer and keep looking.

The original sample was brought in to get clear pictures. It must of then been discarded. I went outside Friday and quickly looked around for more of those white attachments to the needles and was unsuccessful. We'll get out today with several students and try to get a sample in the mail to you today (if we find one).

We have maybe 20 Hemlock trees total on campus, so HWA will not devastate our campus, but the potential find would document the further inland migration of HWA.

Unfortunately students are turning in their laptops today, so 71jc41 will not be able to be reached through comments. If further information is needed, we can be contacted via email or
phone 247-6121 ext 3218. Thanks.


The top photo is definitely not HWA (phew). The bottom one, I am less sure of. It looks a little big for adelgid. Can you tell me more about the texture of that white blob? Was it wet, dry, wispy, fabric-like, etc?

I'm not concerned about the dead needles. That is not typical of adelgid-related decline. They may be related to a fungal disease, but not of significant concern on a tree as large as pictured.

it looks bigger in the picture. if you see the pic on the id you'll notice that they look exactly the same. the texture was dryish and looks like cotton but surtenly has the fabric type of feel to it. but you do see a grayish-green to it. It is a bud surely i know its from a bug. did i tell you that the day before their was a black bug the looks like like the one on the ID.please respond as soon as you can. i will write to you later fellow scientist.

I may need to retract my definitely not on the first. Now I'm feeling maybe on the top picture, too. If you have the sample, I'd love to take a look at it. More photos would be great, you can e-mail them to If I can't tell from additional photos, and you could have Mr. Parent put it in the mail to our office, that would be great. MFS, 168 SHS, Augusta ME 04333 attn. Allison Kanoti. It can be packed in a ziploc-style bag in a regular letter-sized envelope. If you don't have a sample, we'll come down to take a closer look.

I believe in several years this place will become a huge place of Hemlock Woolly Adelgid. purple loosestrife will cover the swamps.