Alder (Alnus)
Aphids
Clearwing borers
Eriophyid mites
Forest tent caterpillar
Poplar and willow borer
Woolly alder aphid Apple (Malus)
Aphids
Calico scale
Cankerworms
Clearwing borers
Eastern tent caterpillar
European fruit lecanium
European red mite
Fall webworm
Flatheaded appletree borer
Gypsy moth
Japanese beetle
Leafhoppers
Oystershell scale
Redhumped caterpillar
Roundheaded appletree borer
Scurfy scale
Twospotted spider mite
Walnut caterpillar
Whitemarked tussock moth
Woolly apple aphid
Yellownecked caterpillar Azalea (Rhododendron)
Azalea lace bug
Black vine weevil
Clearwing borers
Fourlined plant bug
Planthoppers
Twospotted spider mite
Yellownecked caterpilla
| Barberry (Berberis)
Aphids
Black vine weevil
Strawberry root weevil Birch (Betula)
Ambrosia beetle
Aphids
Asian longhorned beetle
Birch leafminer
Bronze birch borer
Clearwing borers
Dusky birch sawfly
Fall webworm
Forest tent caterpillar
Gypsy moth
Japanese beetle
Leafhoppers
Mourningcloak butterfly
Oystershell scale
Poplar and willow borer
Redhumped caterpillar
Walnut caterpillar
Whitemarked tussock moth
Yellownecked caterpillar Bittersweet (Celastrus)
Aphids
Euonymus scale
Treehoppers Black Locust (Robinia)
Bagworm
Locust borer
Twospotted spider mite
Yellownecked caterpillar Blueberry (Vaccinium)
Black vine weevil | Boxwood (Buxus)
Boxwood spider mite
Oystershell scale
Strawberry root weevil Catalpa (Catalpa)
Gloomy scale
Gypsy moth Clematis (Clematis)
Clearwing borers Cotoneaster (Cotoneaster)
Black vine weevil
European red mite
Flatheaded appletree borer
Lace bugs
Oystershell scale
Pear sawfly
Roundheaded appletree borer
Strawberry root weevil
Twospotted spider mite
Currant (Ribes)
Aphids
Clearwing borers
Dogwood (Cornus)
Ambrosia beetle
Calico scale
Clearwing borers
Dogwood sawfly
Flatheaded appletree borer
Fourlined plant bug
Leafhoppers
Oystershell scale
Redhumped caterpillar
Scurfy scale
Spittlebugs
Strawberry root weevil
Twig girdler
Twospotted spider mite |
Elm (Ulmus)
Ambrosia beetle
Aphids
Asian longhorned beetle
Bagworm
Calico scale
Cankerworms
Elm bark beetle, Smaller European
Elm bark beetle, native
Elm borer
Elm casebearer
Elm eriophyid mite
Elm leaf beetle
Elm scurfy scale
European elm scale
European red mite
Flatheaded appletree borer
Fall webworm
Forest tent caterpillar
Gloomy scale
Gypsy moth
Japanese beetle
Leafhoppers
Mourningcloak butterfly
Oystershell scale
Redhumped caterpillar
Twig girdler
Twig pruner
Twospotted spider mite
Whitemarked tussock moth
Woolly apple aphid
Yellownecked caterpillar Euonymus (Euonymus)
Aphids
Black vine weevil
Euonymus scale
Twospotted spider mite Flowering Fruits (Prunus)
Aphids
Cankerworms
Clearwing borers
Eastern tent caterpillar
Eriophyid mites
European fruit lecanium
European red mite
Fall webworm
Forest tent caterpillar
Japanese beetle
Leafhoppers
Oystershell scale
Pear sawfly
Redhumped caterpillar
Twig girdler
Twospotted spider mite
Uglynest caterpillar
Yellownecked caterpillar Forsythia (Forsythia)
Fourlined plant bug
Ground Covers
Black vine weevil
Strawberry root weevil Hackberry (Celtis)
Gloomy scale
Hackberry nipplegall maker
Lace bugs
Mourningcloak butterfly
Twig girdler
Twig pruner | Hawthorn (Crategus)
Aphids
European red mite
Forest tent caterpillar
Lace bugs
Leafhoppers
Pear sawfly
Roundheaded appletree borer
Scurfy scale
Twospotted spider mite
Woolly apple aphid Hazelnut (Corylus)
Aphids
Oystershell scale Hickory (Carya)
Aphids
Cankerworms
Lace bugs
Redhumped caterpillar
Tuliptree scale
Twig girdler
Twig pruner
Walnut caterpillar
Yellownecked caterpillar Holly (Ilex)
Ambrosia beetle
Twospotted spider mite Honeylocust (Gleditzia)
Ambrosia beetle
Aphids
Bagworm
European red mite
Flatheaded appletree borer
Honeylocust spider mite
Honeylocust plant bug
Leafhoppers
Mimosa webworm
Treehoppers
Twig girdler
Twig pruner
Walnut caterpillar
Yellownecked caterpillar Honeysuckle (Lonicera)
Bagworm
Calico scale
Clover mite
Cottony maple scale
Honeysuckle witches' broom aphid
Juniper scale
Mimosa webworm
Twospotted spider mite Horsechestnut (Aesculus)
Asian longhorned beetle
Bagworm
Calico scale
Oystershell scale
Whitemarked tussock moth Hydrangea (Hydrangea)
Aphids
Twospotted spider mite Ivy (Parthenocissus)
Black vine weevil
Calico scale
Japanese beetle
Leafhoppers | Japanese Flowering Quince (Chaenomeles)
Aphids
Laurel (Kalmia)
Black vine weevil
Clearwing borers Lilac (Syringa)
Clearwing borers
Oystershell scale Linden (Tilia)
Ambrosia beetle
Aphids
Cankerworms
Cottony maple scale
Fall webworm
Flatheaded appletree borer
Forest tent caterpillar
Gypsy moth
Japanese beetle
Lace bugs
Linden borer
Mourningcloak butterfly
Oystershell scale
Tuliptree scale
Twig girdler
Twospotted spider mite
Whitemarked tussock moth
Yellownecked caterpillar Magnolia (Magnolia)
Calico scale
Tuliptree scale
Twospotted spider mite Maple (Acer)
Ambrosia beetle
Aphids
Asian longhorned beetle
Bagworm
Boxelder bug
Calico scale
Cankerworms
Clearwing borers
Cottony maple scale
Eriophyid mites
European fruit lecanium
Flatheaded appletree borer
Forest tent caterpillar
Fourlined plant bug
Gloomy scale
Japanese beetle
Leafhoppers
Maple bladdergall mite
Maple spindlegall mite
Maple velvet erineum gall mite
Oystershell scale
Twig pruner
Twospotted spider mite
Whitemarked tussock moth
Woolly alder aphid
Yellownecked caterpillar Mountainash (Sorbus)
European red mite
Fall webworm
Japanese beetle
Lace bugs
Mountainash sawfly
Roundheaded borer
Scurfy scale
Pear sawfly
Woolly apple aphid
Yellownecked caterpillar |
Mulberry (Morus)
Gloomy scale Ninebark (Physocarpus)
Aphids Oak (Quercus)
Aphids
Cankerworms
Clearwing borers
Fall webworm
Flatheaded appletree borer
Forest tent caterpillar
Gypsy moth
Kermes scales
Lace bugs
Leafhoppers
Oak cynipid galls
Obscure scale
Redhumped caterpillar
Twig girdler
Twig pruner
Twolined chestnut borer
Walnut caterpillar
Yellownecked caterpillar Pachysandra (Pachysandra)
Euonymus scale Persimmon (Diospyros)
Bagworm
Fall webworm
Redhumped caterpillar
Twig girdler
Twospotted spider mite Poplar (Populus)
Asian longhorned beetle
Bagworm
Clearwing borers
Cottonwood leaf beetle
Eriophyid mites
Fall webworm
Forest tent caterpillar
Gypsy moth
Imported willow leaf beetle
Japanese beetle
Leafhoppers
Linden borer
Mourningcloak butterfly
Oystershell scale
Poplar and willow borer
Poplar tentmaker
Redhumped caterpillar
Twig girdler
Twospotted spider mite
Whitemarked tussock moth | Privet (Ligustrum)
Black vine weevil
Clearwing borers
Oystershell scale
Strawberry root weevil Pyracantha (Pyracantha)
Bagworm
European red mite
Twospotted spider mite Redbud (Cercis)
Clearwing borers
Leafhoppers
Redhumped caterpillar
Tuliptree scale
Twospotted spider mite
Whitemarked tussock moth Rhododendron (Rhododendron)
Black vine weevil
Lace bugs Rose (Rosa)
Aphids
Fourlined plant bug
Japanese beetle
Oriental beetle
Twospotted spider mite
Whitemarked tussock mot Rose of Sharon (Hibiscus)
Aphids
Fourlined plant bug
Japanese beetle
Twospotted spider mite Sassafrass (Sassafrass)
Japanese beetle Spirea (Spiraea)
Aphids Sweetgum (Liguidambar)
Bagworm
Calico scale
Eastern tent caterpillar
Fall webworm
Gloomy scale
Redhumped caterpillar Sycamore(Pseudoplatanus)
Ambrosia beetle
Aphids
Fall webworm
Flatheaded appletree borer
Gloomy scale | Japanese beetle
Lace bugs
Twig pruner
Whitemarked tussock moth Tuliptree (Liriodendron)
Aphids
Oystershell scale
Tuliptree scale
Twospotted spider mite Viburnum (Viburnum)
Aphids
Clearwing borers
Fourlined plant bug Walnut (Juglans)
Aphids
Fall webworm
Japanese beetle
Lace bugs
Oystershell scale
Redhumped caterpillar
Twig pruner
Twospotted spider mite
Walnut caterpillar
Yellownecked caterpillar Willow (Salix)
Ambrosia beetle
Aphids
Asian longhorned beetle
Clearwing borers
Cottonwood leaf beetle
Fall webworm
Flatheaded appletree borer
Forest tent caterpillar
Imported willow leaf beetle
Leafhoppers
Mourningcloak butterfly
Oystershell scale
Poplar and willow borer
Poplar tentmaker
Redhumped caterpillar
Scurfy scale
Tuliptree scale
Walnut caterpillar Wisteria (Wisteria)
Fall webworm
Fourlined plant bug
Twospotted spider mite Witchhazel (Hamamelis)
Eastern tent caterpillar
Yellownecked caterpillar |
Plant Pathology 
