Scale Insects

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 or waxy material in the case of soft scales, a sturdier covering for armored scales. Young scales (called crawlers) move around the plant, but they … Read more

Rose Chafers

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 light tan in color, feed in swarms, attacking flowering plants first, then moving on to other kinds of plants. The slim, white, 1/4 inch long … Read more

Root Weevils

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 attacks a wide variety of plants, ranging from strawberries to arborvitae. The vegetable weevil (shown) feeds on carrots, tomatoes, spinach, and other plants.Adults of all … Read more

Psyllids

Psyllids

The several species of these aphid size insects, which suck sap primarily from leaf undersides, are sometimes called jumping plant lice. They feed on a variety of plants, including fruit trees; the pear psylla (shown) is the most damaging pear tree pest in the United States. Psyllids are extremely variable in appearance. The greenish or … Read more

Plant Bugs

Plant Bugs

Plant Bugs (Tarnished, Four Lined, Scentless…) are extremely agile insect owes its name to its mottled brown coloring. A true bug, it has a shield-shaped body with a triangular arrangement of white spots on the thorax. The long-legged, adults have a black-tipped yellow triangle at the end of each fore-wing; the nymphs are pale yellow. … Read more

Mites

Mites

Mites are small arthropods with two body regions, sucking mouthparts, no antennae, and four pairs of legs as adults. The life cycle of a mite has four active stages: egg, larva, nymph, and adult. The life cycle requires one to four weeks and can result in high populations when there are favorable conditions. There are … Read more

Mealybugs

Mealybugs

Common on houseplants, these sap feeding aphid relatives are also found outdoors in warm climates. The name ‘”‘mealybug’”‘ refers to the female insects’ powdery wax coating- a shield that prevents insecticides from penetrating. Colonies are often dense enough to make a cottony mound on leaves or, more typically, on stems. Target: Soft tissues of most … Read more

Leafrollers

Leafrollers

The name ”leaf-roller” applies to the many species of caterpillars that roll leaves around themselves as they feed, creating a protective tube. Color and size vary with the species. Some leafrollers attack only one type of plant, while others eat numerous kinds. When disturbed, leafrollers wriggle backward and drop from the plant on a silken … Read more

Leafhoppers

Leafhoppers

There are some 2,500 species of these small, agile, wedge-shaped insects; many types are handsomely colored and patterned. Both adults and nymphs, which look like wingless or short-winged adults, suck sap from leaf undersides. Some species favor just one kind of plant, while others enjoy a wide variety. Leaf hoppers run sideways when disturbed and, … Read more

June Beetles

June Beetles

Varying in color and size by the species, this beetle flies after dusk and is attracted to light. The various common names, may beetle, June bug, June beetle, refer to the season when adults are active, but it’s the earlier larval form that should worry gardeners. Also called white grubs, the larvae resemble Japanese beetle … Read more