Tortricinae, 160 
bark, wood, twigs— 
brown prionid, 315 
Callidium antennatum antennatum, 
304 
Cossonus impressus, 337 
Crypturgus borealis, 362 
Gnathotrichus materiarius, 372 
pole borer, 307 
striped ambrosia beetle, 371 
Tetropium cinnamopterum, 308 
whitehorned horntail, 410 
Xyleborus spp., 372 
Xylotrechus sagittatus sagittatus, 311 
yellowhorned horntail, 410 
buds, shoots, roots— 
Couper’s collar weevil, 326 
pales weevil, 323 
Polyphylla variolosa, 269 
Warren’s collar weevil, 326 
flowers, seeds, fruits— 
Cimberis spp., 318 
Conophthorus spp., 364 
Diodyrhynchus spp., 318 
Dioryctria spp., 182 
Cotoneaster: 
apple mealybug, 91 
twocirculi mealybug, 92 
Cottonwood: See also: poplar 
foliage— 
poplar vagabond aphid, 80 
Prodiplosis morrisi, 445 
Zengophora scutellaris, 265 
bark, wood, twigs— 
aspen carpenterworm, 146 
carpenterworm, 146 
cottonwood borer, 289 
Paranthrene dollii, 144 
tabaniformis, 145 
poplar borer, 295 
buds, shoots, roots— 
cottonwood borer, 289 
Crapemyrtle: 
citrus whitefly, 87 
crapemyrtle aphid, 79 
Creeper, Virginia: 
grape leaffolder, 178 
Cryptomeria: 
cryptomeria scale, 107 
juniper scale, 108 
minute cypress scale, 108 
Cucumbertree: 
Archips magnolianus, 164 
Cypress: 
cryptomeria scale, 107 
juniper scale, 108 
minute cypress scale, 108 
Nuculaspis pseudomeyeri, 117 
Phloeosinus scopulorum neomexicanus, 
392 
D 
Dogwood: 
foliage— 
Asiatic oak weevil, 322 
dark tussock moth, 228 
Epinotia lindana, 160 
giant walkingstick, 51 
io moth, 208 
Macremphytus spp., 409 
Phyllophaga drakei, 268 
implicita, 269 
redhumped caterpillar, 222 
twobanded Japanese weevil, 322 
walkingstick, 50 
bark, wood, twigs— 
Agrilus cephalicus, 280 
Chrysobothris azurea, 283 
dogwood borer, 141 
dogwood clubgall midge, 445 
dogwood twig borer, 299 
Hypothenemus eruditus, 368 
Oberea ulmicola, 300 
Petalium bistriatum, 254 
pitted ambrosia beetle, 370 
Synanthedon geliformis, 142 
twig girdler, 301 
Xyleborinus saxeseni, 374 
Xvleborus rubricollis, 374 
buds, shoots, roots— 
Asiatic oak weevil, 322 
Phyllophaga drakei, 268 
implicita, 269 
flowers, seeds, fruits— 
apple maggot, 448 
sucking insects— 
calico scale, 94 
common falsepit scale, 104 
cottony maple leaf scale, 98 
cottony maple scale, 97 
dogwood scale, 108 
Forbes scale, 119 
Melanaspis nigropunctata, 116 
mulberry whitefly, 87 
periodical cicada, 74 
striped mealybug, 91 
taxus mealybug, 91 
Dogwood, flowering: See: dogwood 
Douglas-fir: 
bark, wood, twigs— 
firtree borer, 307 
old house borer, 316 
pales weevil, 323 
red turpentine beetle, 347 
Stephanopachys substriatus, 257 
Xylotrechus undulatus, 312 
buds, shoots, roots— 
eastern pine shoot borer, 154 
European chafer, 270 
pales weevil, 323 
sucking insects— 
black pineleaf scale, 116 
Cooley spruce gall adelgid, 82 
cryptomeria scale, 107 
elongate hemlock scale, 113 
fiorinia hemlock scale, 113 
Leptoglossus occidentalis, 67 
pine needle scale, 109 
E 
Elder: 
elder borer, 303 
Elder, American: 
elder leaftier, 178 
Elm: 
foliage— 
Acronicta interrupta, 236 
American dagger moth, 236 
