Conifers— Continued 
borers, wood—Continued 
pole borer, 258 
Rhyncolus brunneus, 293 
ribbed pine borer, 262 
Serropalpus barbatus, 214 
Tomolips quercicola, 293 
Trypodendron spp., 339 
Xylotrechus sagitiatus, 271 
leaf feeders— 
bagworm, 438 
gypsy moth, 408-412 
pine tussocks, 407-408 
rusty tussock, 407 
spruce budworm, 480-482 
root feeders— 
Dichelonyz alhicollis, 172 
Diplotaris spp., 171, 173 
goldsmith beetle, 181 
Phyllophaga spp., 171 
Serica spp., 171 
Cornus spp. See Dogwood. 
Cotton— 
hickory horned devil, 383, 384 
io moth, 378, 380 
Cottonwood. See Poplar. 
Dogwood—Continued 
sucking insects— Continued 
leafhoppers— 
Alebra spp., 120 
Empoasca spp., 120 
Erythroneura spp., 120 
Typhlocyba spp., 120 
scales— 
Chionaspis lintneri, 149 
Tetraleurodes mori, 139 
willow scurfy scale, 151 
Douglas-fir— 
borer, seed— 
seed chalcids, 6, 619 
borers, twig and shoot— 
Dioryctria abietella, 451 
white-pine weevil, 282-284 
borers, wood— 
cedar tree borer, 234, 250 
small cedar-bark borer, 234, 237 
leaf feeder— 
spruce budworm 480-482 
sucking insects— 
aphid— 
Cooley spruce gall aphid, 110, 135 
scale— 
Crepbeiien: black pine leaf scale, 108, 148 
Mineola vaccinii, 451 Dutchman’s pipe (Aristolochia)— 
leaf feeders— f pipevine swallowtail, 367 
Sphinz drupiferarum, 374 Elder— 
gordius, 374 
Crataegus. See Hawthorn. 
Currant— 
borer, stem— 
currant stem girdler, 591 
leaf feeders— 
moths— 
currant spanworm, 429 
io moth, 378, 380 
sawfly— 
imported currantworm, 577 
Cypress— 
borers, bark and phloem— 
cedar bark beetles, 320-321 
borers, root— 
Desmocerus Spp., 230, 232, 233 
elder borer, 244-245 
borer, stem— 
Desmocerus piperi, 230 
gall insect— 
Desmocerus piperi, 230 
leaf feeders— 
cecropia moth, 377, 378 
elder leaf tier, 445 
Elm, American— 
borers, bark and phloem— 
black elm bark weevil, 288 
elm bark borer, 232, 259 
cypress bark borer, 234, 259 fruit tree bark beetle, 310 
Magdalis spp., 288 
eo eee Derk beetle 224 native elm bark beetle, 295, 301, 311, 323 
ambrosia beetles, 337 red elm bark weevil, 288 
cypress and cedar borers, 257 Scolytus sulcatus, 312 
flatheaded bald cypress heartwood borer, 196 shot-hole borer, 310 
flatheaded bald cypress sapwood borer, 190 smaller European elm bark beetle, 57, 308, 310- 
ivory-marked beetle, 245 312, 323 
Micracis opacicollis, 325 borers, wood— _ 
Oeme rigida, 257 Anthazia viridifrons, 197 
Platypus compositus, 342 Buprestis rufipes, 193 
Tomolips quercicola, 293 dogwood twig borer, 231, 256 
gall insects— elm borer, 26, 233, 235, 267 
cypress flowering gall, 520 Goes spp., 233 
leaf gall, 520 Hammoderus spp., 233 
seed midge, 520 horntails— 
twig gall, 520 pigeon tremex, 588 
leaf feeders— Xiphydria tibialis, 587 
beetle— Hylocurus langstoni, 325 
Phyllophaga tozodii, 175 living beech borer, 248 
moth— Magdalis spp., 288 
Recurvaria apicitripunctella, 457 moths— 
sucking insect— carpenter worm, 497 
juniper scale, 151 leopard moth, 499 
Deutzia— ODES EOS sO 
Pseudocneorrhinus setosus, 290 Thysuno a ber - ect ae, 326 
Dogwood (Cornus spp.)— twig girdler, 257 
borer, bark and phloem— gall insect— 
Agrilus cephalicus, 192 Oligarces ulmi, 521 
borer, fruit— leaf feeders— 
apple maggot, 524 beetles— 
borer, wood— Altica carinata, 277 
beetles— ulmi, 277 
dogwood twig borer, 231, 256 elm leaf beetle, 57, 267, 275, 276 
twig girdler, 257 European snout beetle, 291 
moth— Phyllophaga futilis, 178 
dogwood borer, 463 soror, 178 
gall insect— tristis, 178 
dogwood club gall, 511 Xanthonia 10-notata, 279 
leaf feeders— butterflies and moths— 
Macremphytus tarsatus, 581 American dagger moth, 392 
varianus, 581 Canarsia ulmiarrosorella, 454 
sucking insects— cankerworms, 422-426 
aphid— Ceratomia amyntor, 372 
Anoecia querci, 111, 127 Charadra deridens, 395 
256505—53——-2 9 
