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MDARD ORNAMENTAL PEST MANAGEMENT EXAM QUESTIONS AND ANSWERS MICHIGAN UNIVERSITY
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MDARD ORNAMENTAL PEST MANAGEMENT EXAM QUESTIONS AND ANSWERS MICHIGAN UNIVERSITY
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MDARD ORNAMENTAL PESTMANAGEMENT EXAM QUESTIONS AND
ANSWERS MICHIGAN UNIVERSITY
Sycamore lace bug
✔✔Small, with highly ornamented white, lacy, wings.
Black eggs can be found in clusters on the underside of leaves.
Feeding causes whitish or yellowish stippling on the foliage.
Pirate bugs and spiders are natural enemies.
Insecticidal soap, horticultural oil, or contact insecticides may be
applied to undersides of leaves.
Oystershell scale
✔✔Brown to grayish and form a crust on the bark of susceptible
hosts.
Crawlers and eggs are white.
No honeydew is produced.
Symptoms include dieback of branches and twigs, yellowed or
undersized foliage.
Two-spotted spider mite
✔✔Adults are oval and greenish yellow with eight legs.
Can generally be seen with a hand lens.
As they feed a dark spot on each side of the body develops, and
infested plants take on a bronzed or stippled appearance.
,Horticultural oils and insecticidal soaps control spider mites and
conserve natural predators.
What is the correct way to manage oystershell scale?
✔✔Treat crawlers with horticultural oils.
What is the correct way to manage potato leafhopper?
✔✔Apply insecticide treatments before leaf curl.
Gypsy moth
✔✔Females are white and mottled brown bands on the wings, and do
not fly.
Males are dark brown and smaller.
As the larvae mature, five pairs of blue spots and six pairs of red
spots become visible.
Look for and destroy egg masses on the trunk, branches, and
surfaces around the tree.
Targeting pesticides at young larvae is most effective.
Black vine weevil
✔✔Adults are snout beetles with black bodies flecked with gold.
Larvae are white, legless, c-shaped grubs with brown heads.
Apply insecticides to foilage to kill adult beetles.
Soil drench applications are more aimed toward larvae.
, Birch leafminer
✔✔Adults are black and resemble small wasps.
Larvae are translucent yellowish white.
Systemic pesticides usually applied to control.
Damage plants by feeding on leaves
✔✔Gypsy moth, European pine sawfly, Japanese beetle, Black vine
weevil, Birch leafminer, Eastern tent caterpillar
Japanese beetle
✔✔Adults have metallic green heads and coppery brown wing
covers.
Larvae are grubs that are white, curled, and have brown heads.
Begin treatments soon after damage is noticed.
European pine sawfly
✔✔Larvae are grayish green with light and dark green stripes running
the length of the body.
Adult resembles thick-bodied wasps.
Target insecticides at young larvae. Insecticidal soap can be
effective for low populations of young larvae.
Eastern tent caterpillar
✔✔Adults are moths that are brown to reddish brown with two pale
diagonal lines on the forewing.
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