Bug Library

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THRIP
Description: Slender; usually brown or yellow but also black; 1/25 to 1/8 inch long; leave brown specks wherever they feed.
Habitat: Variety of plants but most favored are asparagus, beans, onions, iris, gladioli, and roses.
Damage, Symptoms: Leaves having stippled appearance similar to mite damage except for the characteristic specks left by thrips. Flower buds fail to open or are deformed, streaked, and discolored when they open.
Vegetable: They attack most garden crops. Apply malathion or insecticidal soap on foliage to control the insects. Aphids and thrips transmit plant disease; early control is important.
Tree/Shrub: Spray foliage thoroughly (use acephate, malathion or insecticidal soap) with force when thrips become numerous. Repeat as needed. Check for presence of lady beetles and other predators before spraying.
Flower: Spray foliage with carbaryl (2 tbl. per gallon of water) or acephate (4 tbl. per gallon of water). Repeat treatments if needed.
WASP
Description: About 1" in length with a narrow waist and long legs. Color varies by species, but the most common types are reddish-orange to dark brown or black in color with yellow markings on the lower part of the body.
Habitat: Nests can be found in window sills, along eaves or in any other area where there is shelter from the rain.
Damage, Symptoms: These insects are simply a nuisance when nesting around the home and for their ability to sting. If they don't pose a threat, they should be left alone (they feed on many other insects).
Nonchemical: Keep garbage cleaned up and properly covered. Avoid indiscriminate killing of wasps as they are considered beneficial. If picnicking, keep food properly covered or sealed.
WHITE GRUB
Description: Just like they sound, white grubs have a white c-shaped body with a brown head. They have three pairs of legs directly behind the head.
Habitat: They make their home in grass and turf.
Damage, Symptoms: White grubs feed on grass roots causing the grass to appear wilted or off-color. Their tunneling also causes the turf to feel spongy underfoot. Another indication of white grubs is the predatory animals that they attract such as moles, raccoons and skunks.
YELLOW-NECKED CATERPILLAR
Description: Like their name suggests, these caterpillars have a yellow band behind their head. They also have dark bodies with four yellow stripes running the entire length.
Habitat: They feed on fruit and deciduous trees.
Damage, Symptoms: Eggs are laid on the underside of leaves and once hatched, the young caterpillars will eat the leaves.
Tree/Shrub: Spray foliage with acephate, carbaryl, malathion or Bacillus thuringiensis when worms are small (July).
YELLOWJACKET
Description: Black bodies with bands of bright yellow on the abdomen and very short waists.
Habitat: Nests can be found in window sills, along eaves or hanging from the limbs of a tree.
Damage, Symptoms: As opposed to wasps who tend to stay away from humans, yellowjackets are much more defensive of their nests- especially in the fall when food becomes scarcer. This is when you will see them hovering around picnics and outdoor garbage cans.
Nonchemical: Keep garbage cleaned up and properly covered. Avoid indiscriminate killing of yellowjackets as they are considered beneficial. If picnicking, keep food properly covered or sealed. Avoid areas where yellowjackets are prevalent. Keep overripe fruit and vegetables cleaned up and away from human activity. Caulk cracks and crevices during the winter or early spring to prevent yellowjacket nests but do not caulk opening of active nest.
ZIMMERMAN PINE MOTH
Description: The larvae can be brown, pink or greenish with dark spots. They are generally up to 3/4" long. The adult is a moth with gray wings.
Habitat: They attack various pine trees including Scotch and Austrian.
Damage, Symptoms: The larvae cause the most damage by tunneling under the bark causing branches to break. The first sign of this are small bubbles or bulges that resemble popcorn (which inside the tree is actually sap) on the surface of the tree.
Tree/Shrub: Spray trunk and branches with chlorpyriphos or dimethoate in mid-April for young larvae and/or mid-August for adults and young larvae.

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