Invasive SpeciesRed pine scale

Matsucoccus matsumurae
FOUND by Akanoti
Mount Desert
ID Confirmed
Quality checked by akanoti
Peer reviewed by
Field Notes
Informal roadside survey to locate areas of infestation west of Somes Sound.
Supporting Evidence
Photo of my evidence.
Tree with reddening branches. Decline appears to have been rapid due to needles along full length of branch. Some evidence of disease, too.
Photo of my evidence.
Areas with white flocculence detected on undersides of affected branches.
Photo of my evidence.
Microscopic examination of areas beneath bark scales revealed settled immature red pine scales.
Species Observation: Species Looked For
Did you find it?: 
I think I found it
Scientific name:
Matsucoccus matsumurae
Common name:
Red pine scale
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 44.332666 °
W -68.334663 °
Observation Site Information
A photo of our study site.
Coastal - Beach or dune
Trip Information
Mount Desert
Trip date: 
Thu, 2014-11-13 23:30
Town or city: 
Mount Desert
Type of investigation: 
Species Survey
Time of low tide: 


Hello Akanoti,
This submission is a great model for all to follow when looking for RPS. Thanks for taking the time. We know to look for reddening branches when we find red pine, starting from the bottom up. From the red pine we have seen so far, it may be hard to get a hold of branches, as they seem to be way up in the tree. Really hard to use needles as a way to identify red pine for sure. We've found cones on the ground under trees and have learned the difference (pitch pine has those sharp scales on the cone while red pine's cone scales are smooth). One student mentioned he noticed a real difference in the branches (pitch pine being bent and twisted while red pine's are straighter).

We've noticed a lot of dead needles on pitch pine branches (near the tops of the tree). These caught our attention initially. Do you know if lots of dying needles is a normal stage for pitch pine in late fall? Thanks.

Aroostook Team