maple leafcutter, 125 
Melanolophia canadaria, 191 
Pachybrachis peccans, 266 
paddle caterpillar, 236 
Phyllophaga crenulata, 269 
drakei, 268 
forsteri, 269 
luctuosa, 268 
pinkstriped oakworm, 209 
Polydrusus impressifrons, 321 
polyphemus moth, 207 
poplar dagger moth, 236 
Pristiphora siskiyouensis, 404 
promethea moth, 207 
Protoboarmia porcelaria indicataria, 
200 
Psilocorsis cryptolechiella, 132 
red spotted purple, 175 
rose chafer, 270 
saddleback looper, 192 
spotted tussock moth, 224 
striped alder sawfly, 407 
Syneta ferruginea, 266 
tiger swallowtail, 173 
Trichiosoma triangulum, 383 
twinspot sphinx, 215 
western tent caterpillar, 204 
white admiral, 175 
bark, wood, twigs— 
Actenodes acornis, 285 
alder borer, 298 
birch and beech girdler, 310 
birch bark beetle, 362 
Brachyleptura vagans, 306 
Chrysobothris azurea, 283 
Conotrachelus anaglyptius, 337 
pigeon tremex, 410 
Platypus compositus, 376 
poplar-and-willow borer, 334 
Pselaphorhynchites cyanellus, 319 
sapwood timberworm, 248 
Tropideres fasciatus, 318 
Trypodendron betulae, 371 
Xiphydria mellipes, 411 
tibialis, 411 
Xyleborinus saxesensi, 374 
Xyleborus obliquus, 374 
Xyloterinus politus, 371 
buds, shoots, roots— 
European snout beetle, 320 
Phyllophaga crenulata, 269 
drakei, 268 
forsteri, 269 
luctuosa, 269 
flowers, seeds, fruits— 
Semudobia spp., 445 
sucking insects— 
alder spittlebug, 74 
birch margarodid, 90 
Calaphis betulella, 79 
Chionaspis lintneri, 111 
common birch aphid, 79 
Corythucha pergandei, 65 
giant bark aphid, 77 
large hickory lecanium, 95 
oystershell scale, 114 
Psylla carpinicola, 77 
Birch, European white: 
birch casebearer, 134 
birch leafmining sawfly, 398 
Birch, gray: 
foliage— 
ambermarked birch leafminer, 401 
Archiearis infans, 188 
birch casebearer, 134 
birch leafminer, 399 
birch leafmining sawfly, 398 
birch sawfly, 382 
chainspotted geometer, 199 
cigar casebearer, 134 
Compton tortoiseshell, 174 
Datana angusi, 217 
dusky birch sawfly, 406 
Epinotia stroemiana, 160 
filament bearer, 195 
gypsy moth, 229 
Japanese beetle, 271 
Tortricidia flexuosa, 178 
willow flea weevil, 334 
bark, wood, twigs— 
Pseudopitvophthorus asperulus, 363 
flowers, seeds, fruits— 
Japanese beetle, 271 
sucking insects— 
Euceraphis lineata, 79 
Kleidocerys resedae geminatus, 68 
Birch, paper: 
foliage— 
Acleris logiana, 172 
tripunctana, 172 
ambermarked birch leafminer, 401 
American dagger moth, 236 
Archiearis infans, 188 
Archips purpuranus, 164 
Bibarrambla allenella, 132 
birch casebearer, 134 
birch leafmining sawfly, 398 
birch sawfly, 382 
birch skeletonizer, 128 
birch tubemaker, 181 
bronze birch borer, 277 
Bruce spanworm, 189 
chainspotted geometer, 199 
Choristoneura fractivittana, 169 
Compton tortoiseshell, 174 
definite-marked tussock moth, 228 
Epinotia solandriana, 158 
giant walkingstick, 51 
graybanded leafroller, 171 
green oak caterpillar, 219 
gypsy moth, 229 
hemlock looper, 198 
Heterocampa biundata, 222 
io moth, 208 
Tridopsis larvaria, 192 
large aspen tortrix, 168 
large maple spanworm, 199 
Lophodonta ferruginea, 219 
Nematus pinguidorsum, 406 
viridescens, 406 
Nites betulella, 132 
notched-wing geometer, 196 
oak beauty, 195 
obliquebanded leafroller, 168 
Pandemis lamprosana, 161 
54] 
