alder flea beetle
aphid management
apple and thorn skeletonizer
apple ermine moth
azalea bark scale
azalea lace bug New
Barypeithes root weevil
Beneficial nematodes
biocontrol of root weevils New
black stem borer
branch and twig borer
brown marmorated stink bug

bronze birch borer
boxwood leafminer
boxwood psyllid

Ceanothus stem gall moth
cherry ermine moth
chilli thrips
clay colored weevil
cottony camellia scale
cypress tip moth

dogwood sawfly
Douglas fir sawfly New
Douglas fir twig weevil
elm leafminer
European pine shoot moth
European shot-hole borer
emerald ash borer
Fall webworm
flatheaded cedar borer
hollyhock weevil
honeylocust plant bug
honeylocust pod gall midge
Heliothis phloxiphaga
holly bud moth
huckleberry root aphids
ground mealybug
leaf weevil
light brown apple moth
maple tip moth
maple midge
March flies
mountain ash sawfly New
spruce aphid on spruce
oak ambrosia beetle
obscure root weevil
Pacific flatheaded borer
peach tree borer UPDATED
peach twig borer
pear psylla
pear leaf-curling midge
pine needle scale
poplar and willow borer
rose curculio weevil
rose midge
sequoia pitch moth
speckled green fruitworm
tent caterpillars
viburnum leaf beetle
violet gall midge
western poplar clearwing
western spotted cucumber beetle
white pine weevil
woolly ash aphid

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Web of Destruction: Caterpillar pests of concern to PNW Nurseries

How do you identify a caterpillar? These websites might be helpful.

USGS Northern Prairie Wildlife Research Center: What kind of caterpillar is this? This leads to more specific info for the PNW, including Caterpillars of Pacific Northwest Forests and Woodlands (written by OSU's Jeffrey Miller) and University of Idaho's caterpillar identification resource.

Web Images of North American Moth Species at Furman University's website in South Carolina also has some caterpillar identification photos.

If you know the host plant on which the caterpillar feeds, HOSTS - a database of the host plants of the world's Lepidoptera.

Another very nice site to identify moths in the United Kingdom is appropriately titled UK moths.

Website editor:
Robin Rosetta

Page last modified 10/12/07


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