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Insects

Root Maggots

These pests thrive in cool, moist, highly organic soils. The several species include cabbage and onion maggots, found primarily in the northern United States, and the seed-corn maggot, a widespread...

Root Weevils

Many species of root weevils cause trouble. The black vine weevil feasts on plants such as yew, rhododendrons, members of the rose family, and small fruits; the strawberry root weevil...

Rose Chafers

Unlike most insects named after particular plants, the rose chafer doesn't limit itself to one target. It's a general pest. The 2 1/2 inch long adults, slender, long legged, and...

Sawflies

Unlike their bee and wasp relatives, sawflies are plant eaters, named for the way females use their egg-laying organs to saw slits in plants. Adult sawflies look like wasps, but...

Scale Insects

Varying in size, shape, and color, the many species of these aphid cousins look like bumps on bark, leaves, and fruit. All are equipped with an insecticide-resistant coat, a leathery...

Seed Maggots

The seed maggot generally overwinters as a mature larva in a puparium (pupal case) 8-15cm (3-6 in.) deep in the soil. Adults occasionally hibernate and become active very early in...

Sod Webworms

Sod webworms are the larvae of lawn moths, which hide in the day and fly in the evening and at night. When disturbed during daylight hours, the grayish white to...

Sowbugs

Oval and about 1/2 inch long, these seven-legged crustaceans are easy to tell apart; sowbugs have two tail like appendages, and pillbugs curl into a tight ball if disturbed. Although...

Spider Mites

Too small to be seen clearly with the naked eye, these insect relatives flourish in hot, dry environments and on water stressed plants. Unlike predatory mites, spider mites suck plant...

Spittlebugs

Frothy bubbles on a plant are a sure sign that these small, triangular, brownish or greenish creatures are in residence.The froth is actually a protective coating produced by the nymphs;...

Squash Bugs

Long-legged and mainly nocturnal, these true bugs are stubborn pests that favor cucurbits. Both adults and nymphs suck sap from stems and leaf undersides. The 1/2 inch long, shield shaped...

Squash Vine Borers

An eastern pest, the squash vine borer is a 1 inch long caterpillar with a white, accordion like body and a brown head. It tunnels inside plant stems, cutting off...

Stinkbugs

The nymphs and adults have piercing mouthparts which most use to suck sap from plants, although some eat other insects. When they group in large numbers they can become significant...

Tent Caterpillars

Thrips

A few types of these narrow, barely visible insects are predators, but most are pests. Some kinds eat just about any plant, while others attack only a single species. Both...

Ticks

Most Ticks are minute to small (e.g. 0.08–1.00 millimetre or 0.0031–0.039 inch), but the largest Acari (some ticks and red velvet mites) may reach lengths of 10–20 millimetres (0.39–0.79 in)....

Tussock Moths

Tussock Moth Larvae (Orgyia sp.) is a spring-hatching rose defoliator that is bristly, and brightly colored. These caterpillars have hairy tufts along their bodies and horn-like tufts on their heads....

Weevils

Weevils are recognized by their distinctive long snout and antennae with small clubs; beyond that, they have a considerable diversity of form and size, with adult lengths ranging from 0.04...

Whiteflies

Some 200 species of these pests cause problems. Like aphids (their close relatives), they’re sap feeders, sucking plant juices from leaf undersides. The adults, which look like tiny white moths,...

Wireworms

The shiny, reddish brown larvae of the click beetle are the particular bane of gardeners who dote on root crops. Reaching a length of about 1 1/2 inches, wire-worms are...