Insect and Plant Diseases
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
| Name |
Photo/Drawing
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| Alfalfa Weevil | |
| Alfalfa Weevil Parasitoids |
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| Ants
Ants 2 |
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| Aphids |
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| Apple Maggot |
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| Apple Scab |
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| Aquatic Insects | |
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| Arborvitae Leafminor |
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| Ash/Lilac Borer |
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| Asparagus Beetle |
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| Azalea Gall |
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| Bacterial Spot of Peach | |
| Bacterial Wilt of Cucurbits |
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Bagworms |
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Bark Beetles |
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| Barklice
(Bark Splitting on Trees) |
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| Bat
Bugs    Bat Bugs    Bed Bugs and Bat Bugs |
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|
Bats    Source:
Cornell Cooperative Extension (pdf) |
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| Bean Weevil |
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| Bed Bugs |
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| Beech Blight Aphids | |
| Beetle Pests of Ornamentals |
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| Beetles Infesting Flour and Meal (Confused Flour Beetle) |
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| Beneficial Insects |
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| Black Bean Aphid | |
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Black Cherry Fruit Fly |
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| Black
Knot of Cherry & Plum Knots are initially green and soft but then turn brown, harden, and finally become black as they expand and age. Mature knots eventually encircle the infected branch and may be several inches to 1 foot (30 cm) or more in length. |
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| Black Vine
Weevil (Taxus Weevil)    source: CCE of Suffolk Co.    source: Penn State |
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| Blossom End Rot of Tomato |
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| Blueberry - growing |
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| Booklice | |
| Borers |
![]() Borer Damage |
![]() Locust Borer |
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![]() Bronze Birch Borer and Locust Borer |
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| Botrytis Blight |
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Boxelder Bug |
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| Bronze Birch
Borer     Source - CCE of Yates Co.     Source - Univ. of Illinois |
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| Brown Bat, Little | |
| Bruce Spanworm |
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| Cabbage Maggot | |
| Cane Blights of Brambles |
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| Cankers on Trees |
![]() A target canker on an Oriental Chesnut |
| Cankerworms (inch worms) |
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| Care of physically injured trees (pdf) | |
| Carpenter Bees (pdf) | |
|
Carrot Rust Fly |
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| Cecropia Moth |
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| Cedar Apple Rust |
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| Cenangium Canker |
![]() Cup like fruiting structures on dead branch. |
| Cigarette & Drugstore Beetles |
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| Climbing Cutworm |
![]() Adult Female Spotted Cutworm |
| Clothes Moths |
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| Clubroot of Cabbage |
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| Clubroot of Crucifers (pdf) |
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Cluster Fly |
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Cockroaches
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| Coddling
Moth The common "worm" found in apples. Pheromone traps can be used as monitoring tools. Band to trap. (To create substitute location for the codling moth larvae to spin their cocoons and pupate, band the tree trunks and large branches by tying 6-inch strips of burlap or cardboard around them. For central New York, band three times: May, mid-June, to early July, and August. Timing in other locations may vary slightly. Check for larvae and cocoons and kill those you find.) Pick up all drops in late August and September. |
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| Colorado
Potato Beetle Adult potato beetles are yellow and have ten black longitudinal stripes on their wing covers, and are about 3/8" in length. The larvae (or slugs, as they are sometimes called) are brick red in color, hump-backed, soft bodied and are a bit more than 1/2" in length when full-grown. They have two rows of black spots on either side of the body. Eggs are orange-yellow in color and laid in clusters on the underside of the leaves. |
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| Common
Potato Scab Potato scab is a common tuber disease that occurs throughout the potato growing regions of the world. Although scab does not usually affect total yields, significant economic losses result from reduced marketability of the tubers. |
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| Common Rust of Sweet Corn |
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| Companion
Planting Plants are very active in ways that are not so obvious to the casual observer. For example, plants change the chemistry of the soil, and influence the types of microorganisms that grow there. They actively compete with other plants for space. Some will poison their neighbor's offspring to maintain a competitive advantage, while others change the environment in ways that benefit other species. Plants wage a constant battle with insects, relying heavily on chemical warfare. |
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| Comstock Mealybug |
![]() Adult Comstock mealybug females in pear calyx |
| Corn Earworm |
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| Corn Rootworm Beetle |
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| Corn
Smut The plant may be infected at any time in the early stages of its development, but gradually grows less susceptible after the formation of the ear. Any part of the plant above the ground can be invaded, although it is more common on the ears, the tassels, and the nodes than it is on the leaves, the internodes, and aerial roots. The boil is composed of a white, smooth covering, enclosing a great mass, sometimes 4 or 5 inches in diameter, of black, greasy, or powdery spores. After the spores mature, the covering becomes dry and brittle, breaks open, and permits the black powdery contents to fall out.( |
![]() Common smut, caused by Ustilago maydis, causes infection of most above ground parts of corn, but is most frequently found on ears. |
| Crown Canker |
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| Crown Gall (pdf) |
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| Cucumber Beetles, Corn Rootworms & Bacterial Wilt |
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| Currant Borer |
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| Cutworms Source: Cornell University Source: Cornell Home Gardening |
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| Cytospora Canker |
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| Decline & Sudden Death of Red Pine | |
| Deer Tick Ixodes dammini | |
| Diagnosing Vegetable problems | |
| Diamondback Moth | |
| Diplodia Tip Blight | |
| Disease Resistant Apple Cultivars | |
| Disease Resistant Vegetable Cultivars | |
| Dog Urine Damage on Turfgrass | |
| Dogwood Borer | |
| Dollar Spot on Turfgrass | |
| Douglas-Fir
rhabdocline & Swiss Needlecast |
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| Douglas-Fir Needle Midge | |
| Downey Mildew-Grapes | |
| Downey Mildew -Onions | |
| Drain Fly | |
| Dreschlera Leafspot of Kentucky Bluegrass | |
| Drugstore Beetle | |
| Easiest Berry Crop to Grow Ecologically | |
| Oak Disorders | |
| Early Fall Color | |
| Eastern Larch Beetle | |
| Eastern Pine Shoot Borer | |
| Emerald Ash Borer | |
| European Apple Sawfly | |
| European Chafer | |
| European Corn Borer | |
| European Earwig | |
| Eutypa Dieback | |
| Eyed Click Beetle | |
| Fairy Rings of Turfgrass | |
| Fall Armyworm | |
| Fall Webworm | |
| Fertilizing Garden Soils | |
| Fire Blight | |
| Flatheaded Apple Tree Borer | |
| Flatid Planthoppers | |
| Flea Beetles | |
| Fleas | |
| Four Lined Plant Bug | |
| Fruits as Edible Ornamentals | |
| Fusarium Yellows of Cabbage & Related crops | |
| Giant Ragweed | |
| Gladiolus Scab | |
| Gladiolus Thrips | |
| Giant Hogweed | |
| Girdled Tree | |
| Grape Berry Moth | |
| Grape Cane Gallmaker | |
| Grafting and Budding Fruit Trees | |
| Grape Cane Girdler | |
| Grape Flea Beetle | |
| Grape Leafhopper | |
| Grape Rootworm | |
| Grape Tumid Gallmaker | |
| Gray Snow Mold on Turfgrass | |
| Green Fruitworm | |
| Green Peach Aphid | |
| Growing Grapes in Your NY Garden | |
| Gummy Stem Blight of Cucurbits | |
| Gypsy Moth | |
| Hawthorn Leaf Blight | |
| Hemlock Woolly Adelgid | |
| Herb Plants | |
| Holly Leafminers | |
| Hollyhock Rust | |
| Homegrown Apple in NY | |
| Honeylocust Pod Galls | |
| Honeylocust Twig Gall Midge | |
| Honeysuckle Aphid & Witchs' Broom | |
| Horned Oak Gall | |
| Horntails | |
| Hopvine Borer Photo | |
| Household Invading Beetles next pdf | |
| Longhorned Beetles | |
| Foreign Grain Beetle | |
| Ground Beetles | |
| Weevils | |
| Imported Cabbage Worm | |
| Imported Willow Leaf Beetle | |
| Imported Longhorn Beetle | |
| Improving Your Soil | |
| Improve Your Soil with Covercrops | |
| Indian Meal Moth | |
| Insect Traps and Barriers | |
| Insects and Firewood | |
| IPM of Roses | |
| Iris Borer | |
| Is every blemish on fruits and vegetables unacceptable? | |
| Japanese Maple Scale | |
| Juniper Scale | |
| Juniper Tip Blight | |
| Lady Beetles | |
| Lady Beetles in Homes | |
| Landscapes - Choosing Native vs Exotic for the Home Landscape | |
| Larder Beetles Larder/Cabinet | |
| Late Blight | |
| Lawn Insects | |
| Leaf Blight of Pachysandra | |
| Leaf Scorch (trees & shrubs) | |
| Leaf Tatter (trees & shrubs) | |
| Lily Leaf Beetle | |
| Magnolia Scale | |
| Managing Insect Pests in the Home Vegetable Garden | |
| Maple Decline | |
| Maple Syrup Production for the beginner | |
| Maple Trumpet Skeletonizer | |
| Meadow & Pine Vole | |
| Mealybugs on Houseplants | |
| Melon Aphid | |
| Mexican Bean Beetle | |
| Micronutrient Chlorosis | |
| Millipedes, Sowbugs and & Centipedes | |
| Minimumizing Vegetable Diseases | |
| Minimum Effort Ornamentals | |
| Moles & Voles of NYS | |
| Mosquito Control | |
| Moss control | |
| Moths of cereal grains | |
| Moth or Drain Flies | |
| Mountain Ash Sawfly | |
| Nature's Botanical Insecticide Arsenal | |
| Necrotic Ring Spot & Summer Patch on Turfgrass | |
| Nematodes | |
| Nonpathogenic Disorders of Cabbage | |
| Oak Leaf Blister | |
| Oak Skeletonizer | |
| Oblique Banded Leafroller | |
| Oedema | |
| Onion Maggot | |
| Onion Thrips | |
| Orange Rust of Brambles | |
| Organic Matter- Value of | |
| Oriental Fruit Moth | |
| Pachysandra Leaf Blight | |
| Peach Leaf Curl | |
| Peach Tree Borers | |
| Pear Psylla | |
| Periodical Cicadas | |
| Pin Oak Chlorosis | |
| Plant Galls | |
| Plum Curculio | |
| Plum Pox | |
| Potato Late Blight | |
| Potato Scab Common | |
| Potato Stem Borer | |
| Powder Post Beetles | |
| Powdery Mildew | |
| Powdery Mildew of Apples | |
| Powdery Mildew of Cucurbits | |
| Powdery Mildew of Grapes | |
| Praying Mantis | |
| Predatory Mites | |
| Pseudoscorpions | |
| Pythium Diseases of Turfgrass | |
| Raspberry Cane Borer | |
| Recommended Small Fruit Cultivars for the Home Garden | |
| Recommended Urban Trees for USDA Zone 6 and below | |
| Red Thread of Turfgrass | |
| Redband Needle Blight(Dothistroma) | |
| Redbanded Leafroller | |
| Reducing Deer Damage to Home Gardens and Landscape Plantings | |
| Rhabdocline needlecast | |
| Rhubarb Curculio | |
| Rosey Apple Aphid | |
| Rust on Turfgrass | |
| Salt Damage | |
| San Jose Scale | |
| Sap Beetles | |
| Sawtoothed Grain Beetle | |
| Scab of Cucurbits | |
| Scales on Houseplants | |
| SclerotiniaRot of Cabbage | |
| Seedcorn Maggot | |
| Septoria Leaf and Fruit Spot of Cucurbits |
























































































