Discovering and Exploring the Leaf-feeding Insects in Our Region

Pacific Northwest (PNW) Defoliators

What's Eating My Plants
Identify Defoliators on: Cherry and Plum Trees

Species listed here are the most common defoliators of cherry and plum trees in the Puget Sound region. Species are listed from most widespread and abundant to least common and or of limited distribution (2007 data).

Type of Defoliation Species When Where Status
Leaf -rollers
Leaf roller damage
Leaf roller
Partial roll
Apple tortix Apple Tortix
Archips fuscocupreanus
May
Puget
Sound region
Exotic,
here
since
1990's
Oblique-banded leafroller Oblique-banded leafroller
Choristoneura rosaceana
April-
June
Wide-
spread
Native
European leaf-roller European leafroller
Archips rosanus
April-
June
Wide-
spread
Exotic,
here
since
1960's
Dark fruit tree tortrix Dark fruit tree tortrix
Pandemis heparana
April-
June

W. Wash
& BC
region

Exotic,
here
since
1970's
Carnation tortrix Carnation tortrix
Cacoecimorpha pronubana
April-
June

Oregon
to BC

Exotic,
here
since
1970's
 

Shot-holers
Shot hole damage
Winter moth damage on alder
Species When Where Status
Winter moth Winter moth
Geometridae
April-
June
Willamette
Valley
north to
W. BC &
E. Coast
Exotic

 

 

 

 

 

Tent makers
tent makers
Species When Where Status
Tent caterpillar Tent caterpillar
Malacosoma constrictum
April-
June
Wide
spread
Native
Fall webworm Fall webworm
Hyphantria cunea
July-
Sept or
Oct.
Wide
spread
Native
Cherry ermine moth larva Cherry ermine moth
Yponomeuta padellus
April-
June
Willamette
Valley
north to
W. BC
Exotic

Tip Wadders
wadder
Species When Where Status
Eye spotted budmoth larva Eye-spotted bud moth
Spilonota ocellana
April-
June
Wide
spread
Exotic
Lesser budmoth larva Lesser budmoth
Recurvaria nanella
April-
June
Wide
spread
Exotic
 

Folders
Leaf folder damage
Species When Where Status
'Golden' leaf roller Golden leafroller
Acleris holmiana
April-
June
Puget
Sound
region
Exotic
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