The following table lists some of the common or key insect and mite pests of woody ornamentals. Look under the host plant involved and find the correct common name of the pest. Check Tables 2.9.1 and 2.10.1 for monitoring and control information. Numbers following the insect name indicate where additional information can be found in Insects That Feed on Trees and Shrubs, second edition. Illustrations (plate numbers) are in boldface type. Book is available from Cornell University Press, P.O. Box 6525, Ithaca, NY 14850.

Table 2.8.1. Host plant guide to insect names: an aid to diagnosis and identification
Plant	Pest	Page No.	Plate No.
Andromeda	azalea bark scale	336	160
	azalea whitefly	318	151
	lace bugs	424	204
Apple (flowering crab)	aphids	296, 300, 316	150
	cankerworms	142, 44	63, 64
	leafhoppers	412–418	216-218
	leafrollers	172	100, 101
	oystershell scale	370	177
	redbanded leafroller	214
	roundheaded appletree borer	278	131
Arborvitae	arborvitae leafminer	142	14
	arborvitae weevil	240	244
	bagworm	176	80
	black vine weevil	240	112, 113
	Fletcher scale	98	42
	gypsy moth	138, 140	61, 62
	hemlock looper	24
	juniper scale	106	46
	spruce spider mite	118	52, 53
Ash	blackheaded ash sawfly	134	59
	lace bugs	426
	lilac/ash borer	260	122
	oystershell scale	370	177
Azalea	azalea bark scale	336	160
	azalea leafminer	202	93
	azalea whitefly	318	151
	black vine weevil	240	112, 113
	fruittree leafroller (azalea leaftier)	172
	lace bugs	424	204
	rhododendron borer	258,	121
	rhododendron stem borer	288
	southern red mite	475	229
	twobanded Japanese weevil	244	114
Barberry	twobanded Japanese weevil	244	114
Beech	aphids	296, 310	140, 147
	cankerworms	142–144	63, 64
	woolly beech aphid	296	140
Birch (white, gray, yellow, and European white)	aphids	296, 310	140, 147
Birch (white, gray, yellow, and European white)	birch leafminer	184	84
	birch skeletonizer	220
	bronze birch borer	272	128
	European hornet	494	238
	potato leafhopper	414	199
Bittersweet	euonymus scale	388	186
Boxwood	boxwood leafminer	204	94
	boxwood mite	475	229
	boxwood psyllid	290	137
Butternut	butternut gall mite	488	235
	walnut caterpillar	150	67
Cedar	arborvitae weevil	240, 244	244
	bagworm	176	80
	spruce spider mite	118	52, 53
Cherry (Wild) and Chokecherry	eastern tent caterpillar	168	76
Cherry (Wild) and Chokecherry	fruittree leafroller	172
Cotoneaster	lace bugs	426
	oystershell scale	370	177
Deutzia	twobanded Japanese weevil	244	114
Dogwood	cottony maple leaf scale	342–346	163, 165
	dogwood borer	262	123
	dogwood sawfly	126	55
Douglas-Fir	Cooley spruce gall adelgid	112	49, 76
	Douglas-fir needle midge	44	15
	spruce spider mite	118	52, 53
Elm	bark beetles	246–248	115, 116
	cankerworms	142–144	63, 64
	clover mite	472
	elm case bearers	186	85
	elm cockscomb gall aphid	464	224
	elm leaf beetle	220	103
	elm leafminer	186	85
	European elm scale	368	176
	European red mite	472	228
	forest tent caterpillar	168	76
	gypsy moth	138–140	61, 62
	lecanium scales	354, 364, 169	174
	linden looper	144	64
	twig pruner	264	124
	twospotted spider mite	476
	woolly elm aphid	306, 316	145
Euonymus	black vine weevil	240	112, 113
	euonymus scale	388	186
	twobanded Japanese weevil	244	114
Fir	balsam gall midge	116	51
	balsam twig aphid	80	33
	spruce budworm	28	7
Flowering Fruits (cherry, peach, almond)	aphids	292, 300, 308
Flowering Fruits (cherry, peach, almond)	cankerworms	142, 144	63, 64
	European red mite	472	228
	fall webworm	166	75
	Japanese beetle	236	110

Pest Management Guidelines A Cornell Cooperative Extension Publication	Cornell Guide for Pest Management of Trees and Shrubs
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