Discovering and Exploring the Leaf-feeding Insects in Our Region

Pacific Northwest (PNW) Defoliators

What's Eating My Plants
Identify Defoliators on: Ornamental Trees or Shrubs

Species listed here are the most common defoliators of ornatmental trees and shrubs 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
 

Tent makers
tent makers
Species When Where Status
Tent caterpillar Tent caterpillar
Malacosoma constrictum
April-
June
Willamette
Valley
north to
W. BC &
E. Coast
Exotic
Fall webworm Fall webworm
Hyphantria cunea
July-
Sept or
Oct.
Less
common
NW &
E. Coast
Exotic

Leaf miners
Leaf miner_damage
Species When Where Status
Lilac leaf-miner damage Lilac leaf miner
Caloptilia syringella

April-
June
Wide-
spread
Exotic
 

Shot-holers
Shot hole damage
Winter moth damage on alder
Species When Where Status
Carcina querana Oak skeletonizer
Carcina quercana
April-
June

Western Wash.
and BC

Exotic
 

Secondary content using h2 tag. Column 2

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