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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
Alfalfa Weevil
Alfalfa Weevil Parasitoids
Ants
Ants 2
Aphids
Apple Maggot
Apple Scab
Aquatic Insects
Arborvitae Leafminor
Ash/Lilac Borer

Asian Longhorn Beetle - Cornell
Asian Longhorn Beetle (pdf)

Asparagus Beetle
Azalea Gall
Bacterial Spot of Peach
Bacterial Wilt of Cucurbits

Bagworms
    Source - Cornell U
    Source - U of Kentucky
    Source - U of Nebraska

Does your cedar windbreak seemed thin? Are you able to see through it? Have you noticed bag-like things hanging from the branches? If so -- you may have an infestation of Bagworms!

Bark Beetles
   Source: U of California
    Source: U of California (pdf)

Barklice
(Bark Splitting on Trees)
Bat Bugs
   Bat Bugs
   Bed Bugs and Bat Bugs

Bats
(also see Little Brown Bat)

   Source: Cornell Cooperative Extension (pdf)
   Source: CCE of Suffolk County

Bean Weevil
Bed Bugs
Beech Blight Aphids
Beetle Pests of Ornamentals
Beetles Infesting Flour and Meal (Confused Flour Beetle)
Beneficial Insects
Black Bean Aphid

Black Cherry Fruit Fly
   Source: Cornell University IPM
   Source: Cornell Cooperative Extension (pdf)


Black Cherry Tree Removal

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.
Black Vine Weevil
(Taxus Weevil
)
   source: CCE of Suffolk Co.
   source: Penn State
Blossom End Rot of Tomato
Blueberry - growing
Booklice
Borers

Borer Damage

Locust Borer

Bronze Birch Borer and Locust Borer
Botrytis Blight

Boxelder Bug
    Source - Cornell U
    Source - CCE of Niagara Co.

Bronze Birch Borer
    Source - CCE of Yates Co.
    Source - Univ. of Illinois
Brown Bat, Little
Bruce Spanworm
Cabbage Maggot
Cane Blights of Brambles
Cankers on Trees

A target canker on an Oriental Chesnut
Cankerworms (inch worms)
Care of physically injured trees (pdf)
Carpenter Bees (pdf)

Carrot Rust Fly

Source: Cornell U.

Source: Washington State University

Cecropia Moth
Cedar Apple Rust
Cenangium Canker

Cup like fruiting structures on dead branch.
Cigarette & Drugstore Beetles
Climbing Cutworm

Adult Female Spotted Cutworm
Clothes Moths
Clubroot of Cabbage
Clubroot of Crucifers (pdf)

Cluster Fly
They look very similar to house flies but have a fine golden hair on their thorax. They are earthworm parasites during the summer, but invade homes during the fall to spend the winter. If they get in they will be a nuisance all winter long.

Source: Cornell U

Source: U of Wisconsin

Cockroaches

Source: Cornell Cooperative Extension Handout - "Found A Cockroach Handout" (pdf)

Source: CCE of Suffolk County


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.
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.
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.
Common Rust of Sweet Corn
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.

Comstock Mealybug

Adult Comstock mealybug females in pear calyx
Corn Earworm
Corn Rootworm Beetle

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
Crown Gall (pdf)
Cucumber Beetles, Corn Rootworms & Bacterial Wilt
Currant Borer
Cutworms
Source: Cornell University
Source: Cornell Home Gardening
Cytospora Canker
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

Diseases of Maples in Eastern North America

Dog Urine Damage on Turfgrass
Dogwood Borer
Dollar Spot on Turfgrass
Douglas-Fir
rhabdocline & Swiss Needlecast
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