Invasive Specieswinter moth

Operophtera spp.
FOUND by 65BR54H
ID Questioned
Quality checked by pparent
Peer reviewed by
Field Notes
I think I found Winter Moth because it's almost winter and I wouldn't expect to find a moth. Also, this moth was on my porch light. The back of the moth is kind of furry and the color of the moth's wings are beige with hints of brown.
A sketch of our study site.
Supporting Evidence
Photo of my evidence.
The moth I found is a little smaller than a penny and that is about as big as they get.
Photo of my evidence.
The brown pattern also indicates that it is winter moth.
Photo of my evidence.
It's kind of hard to tell, but the wing span is about one inch.
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
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Map this species
N 43.663506 °
W -70.820043 °
Observation Site Information
A photo of our study site.
Upland - Developed areas
Trip Information
Front porch
Trip date: 
Fri, 2015-12-11 19:08
Town or city: 
Type of investigation: 
Species Survey


You made a good find with this winter moth. Here in Maine, we did not the winter moth, it has been seen around portland area though.

Hi 65BR54H,

Did you ever hear back about the results from the Maine Forest Service?


It was actually Winter Moth. When the submissions came back this was identified as Winter Moth, but another person's wasn't Winter Moth.

Thanks for following up. This is really important work you are doing, keep it up!

Specimen has been received, dissections will take place in February and you will be notified of the results.

Thank you for submitting a specimen.

If you send in more moths please include the date when the moth was captured.

I found the specimen on Wednesday the eleventh of Decenber.

The habitat is actually developed forest. Sorry for the confusion.

Thanks for the update 65BR54H. We assumed you meant upland - developed area, and changed it accordingly. If that is not what you meant, please let us know in a comment below.


-The VS Team-

I don't know what it is, but I think it's Winter Moth. In a part of Limerick I think there is Winter Moth.

Could be either winter moth or Bruce spanworm. You could mail in some specimens in an envelope to:

Charlene Donahue, Forest Entomologist
Maine Forest Service, ACF
Insect & Disease Laboratory
168 State House Station
Augusta, Maine 04333

As of now at my school we have three specimens as of now almost ready to be sent to Augusta.

Great photos 65BR54H! I like how you used a penny for scale.

Thank you. :)