Official websites use .gov
A .gov
website belongs to an official government organization in the
United States.
Secure .gov websites use HTTPS
A lock
(
) or https:// means you've safely
connected to the .gov website. Share sensitive information only
on official, secure websites.
Western Forest Insects and Diseases- DEFOLIATORS
- general information Other Forest Insects & Diseases
- other defoliators
- cutworms
- cypress tip moth
- Douglas-fir tussock moth
- elm leaf beetle
- fall webworm
- gypsy moth
- hemlock sawfly
- larch casebearer
- larch sawfly
- loopers
- needle miners (Coleotechnites spp)
- pine butterfly
- Ponderosa pine budworm
- satin moth
- sawflies
- silverspotted tiger moth
- spearmarked black moth
- tent caterpillars
- western blackheaded budworm
- western hemlock looper
- western spruce budworm
General Websites about Defoliators
- Foliage Feeding Insects -- www.forestpests.org (website)
- sampling, hosts, management principles, management strategies -- B.C. Ministry of Forests
Other Defoliators (many species)
- Coleotechnites atrupictella -- Natural Resources Canada
- Cypress Leaftier -- Natural Resources Canada
- Juniper Webworm -- Natural Resources Canada
- Leafmining Insects (or html) -- Colorado State University
- Northern Pitch Twig Moth -- Natural Resources Canada
- Tolype dayi -- Natural Resources Canada
Cutworms (many species)
- Egira simplex -- Natural Resources Canada
- Feralia comstocki -- Natural Resources Canada
- Redlined Conifer Caterpillar -- Natural Resources Canada
- Zale duplicata -- Natural Resources Canada
Cypress Tip Moth (Argyresthia cupressella)
- Cypress Tip Moth -- University of British Columbia
- Cypress Tip Moth -- Natural Resources Canada
Douglas-fir Tussock Moth (Orgyia pseudotsugata)
- Douglas-fir Tussock Moth -- Natural Resources Canada
- Douglas-fir Tussock Moth -- University of British Columbia
- Douglas-fir Tussock Moth -- USDA FS Pacific Northwest Region website
- Douglas-fir Tussock Moth -- www.forestpests.org (website)
- animated maps - Oregon -- pheromone trap catches, 1995 - present
- animated maps - Washington -- pheromone trap catches, 1995 - present
- hosts, description, timing, distribution, management strategy -- B.C. Ministry of Forests
Elm Leaf Beetle (Pyrrhalta luteola)
- Elm Leaf Beetle -- www.forestpests.org (website)
Fall Webworm (Hyphantria cunea)
- Fall Webworm -- The Bugwood Network
- Fall Webworm -- University of British Columbia
- Fall Webworm -- www.forestpests.org (website)
Gypsy Moth (Lymantria dispar)
- Gypsy Moth -- USDA FS, Northeastern Station website
- Gypsy Moth -- Forest Insect and Disease Leaflet No. 162
- Gypsy Moth -- gateway (many links)
- Gypsy Moth -- University of British Columbia
- Gypsy Moth -- www.forestpests.org (website)
Hemlock Sawfly (Neodiprion tsugae)
- Hemlock Sawfly -- University of British Columbia
- Hemlock Sawfly -- www.forestpests.org (website)
Larch Casebearer (Coleophora laricella)
- Larch Casebearer -- Forest Insect and Disease Leaflet No. 96
- Larch Casebearer -- Oregon Dept. of Forestry, Forest Health Note
- Larch Casebearer -- Natural Resources Canada
- Larch Casebearer -- University of British Columbia
- Larch Casebearer -- www.forestpests.org (website)
Larch Sawfly (Pristiphora erichsonii)
- Larch Sawfly -- Natural Resources Canada
- Larch Sawfly -- University of British Columbia
- Larch Sawfly -- www.forestpests.org (website)
Loopers (many species)
also see Western Hemlock Looper
- Brownlined Looper -- Natural Resources Canada
- Common Emerald -- Natural Resources Canada
- Enypia griseata -- Natural Resources Canada
- Enypia venata -- Natural Resources Canada
- Eupithecia ornata -- Natural Resources Canada
- Eupithecia unicolor -- Natural Resources Canada
- False Hemlock Looper -- www.forestpests.org (website)
- Filament Bearer -- Natural Resources Canada
- Gabriola dyari -- Natural Resources Canada
- Gray Forest Looper -- Natural Resources Canada
- Gray Spruce Looper -- Natural Resources Canada
- Greenstriped Forest Looper -- Natural Resources Canada
- Green-striped Forest Looper -- Natural Resources Canada
- Green Velvet Looper -- Natural Resources Canada
- Nepytia umbrosaria nigrovenaria -- Natural Resources Canada
- Pero behrensaria -- Natural Resources Canada
- Phantom Hemlock Looper -- Natural Resources Canada
- Sabulodes edwardsata -- Natural Resources Canada
- Saddleback Looper -- Natural Resources Canada
- Synaxis pallulata -- Natural Resources Canada
- Thallophaga hyperborea -- Natural Resources Canada
- Thera otisi -- Natural Resources Canada
- Western False Hemlock Looper -- Natural Resources Canada
- Yellowlined Forest Looper -- Natural Resources Canada
Needle Miners (Coleotechnites species)
- Lodgepole Needleminer -- www.forestpests.org (website)
- Northern Lodgepole Needleminer -- University of British Columbia
- Ponderosa Pine Needleminer -- www.forestpests.org (website)
Pine Butterfly (Neophasia menapia)
- Pine White -- Natural Resources Canada
- White Pine Butterfly -- University of British Columbia
- Pine Butterfly -- www.forestpests.org (website)
Satin Moth (Leucoma salicis)
- Satin Moth -- Natural Resources Canada
- Satin Moth -- University of British Columbia
- Satin Moth -- www.forestpests.org (website)
Sawflies (many species)
also see Hemlock Sawfly, Larch Sawfly
- Greenheaded Spruce Sawfly -- Natural Resources Canada
- Neodiprion mundus -- Natural Resources Canada
- Yellowheaded Spruce Sawfly -- Natural Resources Canada
Silverspotted Tiger Moth (Halisidota argentata)
- Silver-spotted Tiger Moth -- Natural Resources Canada
Spear-Marked Black Moth (Rheumaptera hastata)
- Spear-Marked Black Moth -- Forest Insect and Disease Leaflet No. 156
- Spear-marked Black Moth -- www.forestpests.org (website)
Tent Caterpillars (Malacosoma species)
- Forest Tent Caterpillar -- Natural Resources Canada
- Forest Tent Caterpillar -- University of British Columbia
- Forest Tent Caterpillar -- www.forestpests.org (website)
- Forest Tent Caterpillar -- aerial detection data for B.C.
- Pacific Tent Caterpillar -- www.forestpests.org (website)
- Northern Tent Caterpillar -- Natural Resources Canada
- Northern Tent Caterpillar -- aerial detection data for B.C.
- Southwestern Tent Caterpillar -- www.forestpests.org (website)
- Western Tent Caterpillar -- Oregon Dept. of Forestry, Forest Health Note
- Western Tent Caterpillar -- www.forestpests.org (website)
Western Blackheaded Budworm (Acleris gloverana)
- Western Blackheaded Budworm -- Natural Resources Canada
- Western Blackheaded Budworm -- University of British Columbia
- Western Blackheaded Budworm -- www.forestpests.org
- aerial detection data for B.C. -- download-able files by year
- hosts, description, timing, distribution, management strategy -- B.C. Ministry of Forests
Western Hemlock Looper (Lambdina fiscellaria lugubrosa)
- Western Hemlock Looper -- Natural Resources Canada
- Western Hemlock Looper -- University of British Columbia
- aerial detection data for B.C. -- download-able files by year
- hosts, description, timing, defoliation history, management strategy -- B.C. Ministry of Forests
Western Spruce Budworm (Choristoneura occidentalis)
- Budworms -- Natural Resources Canada
- Western Spruce Budworm or -- Forest Insect and Disease Leaflet No. 53
- Western Spruce Budworm -- WA State University Forest Health Note
- Western Spruce Budworm -- www.forestpest.org
- managing western spruce budworm -- past suppression projects
- animated defoliation maps -- OR & WA, 1980 to present
- aerial detection data for B.C. -- download-able files by year
- hosts, description, timing, relative risk in B.C., management strategy -- B.C. Ministry of Forests
