Invasive Specieswinter moth

Operophtera spp.
FOUND by apalmer
ID Confirmed
Quality checked by apalmer
Peer reviewed by
Field Notes
It was just me this time, and the light was waning, so my photos are terrible, but I thought I'd stop at "ground zero," or at least what appeared to be so last summer. (Lots of Swiss cheese trees in this area!) I believe I found either the Bruce span worm or Winter moth. I looked at about 5 trees, and there were approximately 10 male moths and a few of the flightless females. (Although I must say, I had my 3 year old in the car and he did not allow me a ton of time....) I will check back in this spot when I return from Thanksgiving.
Supporting Evidence
Photo of my evidence.
This moth was less than one inch in wingspan.
Photo of my evidence.
This moth was brownish gray, and found on a banded maple tree.
Photo of my evidence.
In the limited light, my camera didn't capture this well, but if you look on the pink stuff, there are (I believe) two females. They had wing stubs and appeared to have a similar but stouter abdomen compared with the males.
Species Observation: Species Looked For
Did you find it?: 
I think I found it
Scientific name:
Operophtera spp.
Common name:
winter moth
Sampling method: 
Just looking around
Photo of our sampling method.
Place Studied
We’re sorry, JavaScript is required to view the map. If JavaScript is you may wish to upgrade to a newer browser in order to view this map.
Map this species
N 44.046900 °
W -68.844300 °
Observation Site Information
A photo of our study site.
Upland - Developed areas
Trip Information
Vinalhaven town
Trip date: 
Mon, 2012-11-19 16:49
Town or city: 
Type of investigation: 
Species Survey
Penobscot bay


I'll be heading out to Coombs Neck after Thanksgiving, Amy, and will look around for signs of winter moth using your excellent photos as a guide. Have you checked out there yet?

Jonathan (aka Mr. Rumphius)

Based on your observations and the photo of the females this observation confirms Winter Moth (Operophtera brumata) on Vinalhaven. Winter moth is the flightless female that has noticeable wing stubs; Bruce spanworm and fall cankerworm have very short stubs or are wingless.

Excellent observation with a three year old along!