Invasive SpeciesHemlock wooly adelgid

Adelges tsugae
NOT FOUND by NobleHS
2012-01-18
North Berwick
ID Questioned
Quality checked by Chris
Peer reviewed by Nancy
Field Notes
I am happy because the samples were fairy easy to obtain. I am surprised not to find hemlock wooly adelgid. I had walk through snow to get to the tree.
Supporting Evidence
Photo of my evidence.
No white insects or wooly adelgid nymphs.
Photo of my evidence.
Hemlocks were not given a gray appearance.
Photo of my evidence.
No white fuzz on the underside of the hemlock needles.
Species Observation: Species Looked For
Did you find it?: 
I think I did not find it
Scientific name:
Adelges tsugae
Common name:
Hemlock wooly adelgid
Sampling method: 
Just looking around
Photo of our sampling method.
Place Studied
We\’re sorry, Javascript is required to view the map. You may wish to upgrade to a newer browser in order to view this Google Map.
Map this species
Latitude: 
N 43.305901 °
Longitude: 
W -70.781919 °
Observation Site Information
A photo of our study site.
Name:
NobleHS's visit to Noble High School
Habitat: 
Upland - Forest
Trip Information
Name:
Noble High School
Trip date: 
Wed, 2012-01-18 08:20
Town or city: 
North Berwick
Type of investigation: 
Species Survey
Ecosystem: 
Upland
Watershed: 
Great Works River
Sampling Method: 
Nearest waterbody: 

Comments

Submitted by Akanoti on Fri, 2012-01-20 12:20.

Thanks for Looking!

It is great to have other eyes looking out for this pest in North Berwick! The Maine Forest Service is in the midst of hemlock woolly adelgid survey. Five sites have been surveyed in North Berwick with no adelgid found (at least 200 branches/site examined). You mentioned no wool on the undersides of the needles, I'll offer a slight correction. The adelgid attaches at the base of a needle, but the wool usually looks like it is attached to the underside of the twig. There are several other tiny white things that are found on needles and can be confused with hemlock woolly adelgid. Of course the wool can be relocated to needles, so it is always a good idea to take a closer look at white specks on hemlock branches. Speaking of white things on needles, I love the picture of snow-covered hemlock. The graceful, drooping form of hemlock branches and the tendency of the species to have a deep crown are accentuated by the snow.