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Insect and Disease Fact Sheets

Insects

Aphids

Asian Longhorned Beetle

Balsam Gall Midge

Balsam Shootboring Sawfly

Balsam Twig Aphid

Balsam Woolly Adelgid

Barklice - Psocids

Birch Casebearer

Birch Leafminer

Brown Spruce Longhorn Beetle

Browntail Moth: Precautions in Handling, Identifying Winter Nests

Bruce Spanworm

Carpenter Ants

Clover Mites

Cooley Spruce Gall Adelgid

Eastern Spruce Gall Adelgid

Elm Leaf Beetle

Elongate Hemlock Scale

Emerald Ash Borer

European Pine Shoot Moth

European Woodwasp

Fall Cankerworm

Fall Webworm

Gall Mites of Deciduous Shade Trees

Gypsy Moth

Hemlock Looper

Hemlock Woolly Adelgid

Insects from Firewood

Introduced Pine Sawfly

Maple Bladder Gall Mite

Mosquito: Mosquitoes of Maine Table

Mountain Ash Sawfly

Oak Leaf Tier

Oak Twig Pruner

Orangehumped Mapleworm

Pales Weevil

Pine Leaf Adelgid

Pine Spittlebug

Saddled Prominent

Saratoga Spittlebug

Satin Moth

Saw-Toothed Grain Beetles

Sirex Woodwasp

Spider Mites

Spruce Beetle

Springtails and Snowfleas

Spruce Budworm

Tent Caterpillars

Ticks (Maine Medical Center website, Maine CDC)

Variable Oakleaf Caterpillar

White Pine Weevil: Pruning Tips (pdf), Spray Baffle For Control of White Pine Weevil with a Garden Sprayer

Willow Flea Weevil and Imported Willow Leaf Bug

Yellowheaded Spruce Sawfly

 

Diseases and Injury

Ash Leaf and Twig Rust

Declining Spruce Health

Eastern Dwarf Mistletoe

Logging Injuries

Ice Storm Tips 2008

Sudden Oak Death

Tar Spot of Norway Maple

White Pine Blister Rust

Winter Drying

 

Other

Fertilizing Urban Trees

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