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Common Names of Insects Affecting Ornamental Plants and the ...

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Euonymus scale 35 120 533 820<br />

European fruit lecanium 35 145 1266 1645<br />

Fletcher scale 35 148 1029 1388 2515 2800<br />

Hemlock scale 35 121 1388 2154<br />

Balsam twig aphid 58 120<br />

<strong>Common</strong> <strong>Names</strong> <strong>of</strong> insect <strong>and</strong> growing degree days (GDD) affecting<br />

ornamental plants.<br />

If more than one range <strong>of</strong> numbers appears, this is indicative <strong>of</strong> multiple<br />

generations <strong>and</strong>/or control periods in an insect’s life cycle<br />

<strong>Common</strong> name <strong>of</strong> insect Growing Degree Days<br />

Honeylucust plant bug 58 246<br />

Min Max Min 2 Max 2 Min 3 Max 3<br />

Maple bladdergall mite 58 148 98 155<br />

Pine tortoise scale 58 148 618 1050<br />

Eastern tent caterpillar 90 190<br />

Gypsy moth 90 448<br />

Hickory leaf stem gall phylloxera 91 246<br />

Pine tube moth 91 246 1151 1514<br />

Balsam gall midge 120 290<br />

Cooley spruce gall adelgid (Fir) 120 190 1500 1775<br />

Nantucket pine tip moth 121 448 1514 1917<br />

Spotted teniform leafminer 121 192 363 533<br />

Woolly elm aphid 121 246<br />

Woolly larch adelgid 121 192<br />

Zimmerman pine moth 121 246 1917 2154<br />

Black vine weevil 148 400<br />

Cankerworms 148 290<br />

Dogwood borer 148 700<br />

Hackberry psylla 148 448<br />

Lilac borer 148 299<br />

Pine spittlebugs 148 298<br />

Snowball aphid 148 298<br />

Taxus bud mite 148 448 707 912

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