Index to Insects by Host Plants 
This index should enable foresters and 
others not trained in entomology to identify 
many of the insects and related forms causing 
damage to particular species of trees or 
shrubs. Only those insects having definite 
host plants are included. The common names 
of insects, where known, are used; other- 
wise, the scientific names are given. Where 
applicable, the part of the host injured or 
destroyed is listed in the following catego- 
ries: foliage; bark, wood, or twigs; buds, 
shoots, or roots; flowers, seeds, or fruits. 
fig tree borer, 308 
Oberea pallida, 300 
poplar-and-willow borer, 334 
Sinodendron rugosum, 267 
Sthenopis argenteomaculatus, 124 
sucking insects— 
alder spittlebug, 74 
Chionaspis lintneri, 111 
Corythucha pergandei, 65 
Psylla floccosa, 77 
galeaformis, 77 
Pterocallis alnifoliae, 79 
woolly alder aphid, 80 
The readily identifiable sucking insects are Andromeda: 
listed separately from the feeding categories cottony maple leaf scale, 98 
because of their primarily oligophagous Apple: 
feeding habits. In addition, wood products is foliage — 
listed as a host. *) 
A 
Acacia: 
Cryptothelea gloverii, 127 
mesquite borer, 287 
Oncideres pustulatus, 301 
Thysanoes fimbricornis, 367 
Acacia, sweet: 
Oncideres pustulatus, 301 
Ailanthus: 
ailanthus webworm, 140 
Asiatic garden beetle, 270 
cynthia moth, 206 
Alder: 
foliage— 
Acronicta distans, 236 
alder flea beetle, 263 
alder tubemaker, 181 
Arge scapularis, 382 
birch sawfly, 382 
birch skeletonizer, 128 
Bruce spanworm, 189 
Caloptilia pulcheila, 132 
Chrysomela interrupta, 260 
Clastoptera obtusa, 74 
Corythucha pergandei, 65 
cottonwood leaf beetle, 260 
Croesus varus, 407 
Dichelonyx elongata, 270 
elm sawfly, 382 
European alder leafminer, 400 
European snout beetle, 320 
Evora hemidesma, 149 
Himatolabus pubescens, 319 
Tridopsis larvaria, 192 
large aspen tortrix, 168 
Nematus erythrogaster, 406 
smeared dagger moth, 236 
spear-marked black moth, 190 
stout looper, 195 
striped alder sawfly, 407 
threelined leafroller, 161 
western tent caterpillar, 204 
bark, wood, twigs— 
alder borer, 298 
birch and beech girdler, 310 
buds, shoots, roots— 
alder borer, 298 
birch and beech girdler, 310 
Dicerca lurida, 284 
European snout beetle, 320 
Acronicta distans, 236 
interrupta, 236 
apple bucculatrix, 128 
apple flea weevil, 334 
apple-and-thorn skeletonizer, 145 
basswood leafminer, 263 
browntail moth, 235 
cecropia moth, 206 
crinkled flannel moth, 176 
Datana major, 218 
definite-marked tussock moth, 228 
eastern tent caterpillar, 202 
fall cankerworm, 188 
filament bearer, 195 
flatheaded appletree borer, 281 
gypsy moth, 229 
Haploa clymene, 226 
io moth, 208 
linden looper, 193 
locust leafminer, 264 
oriental moth, 177 
palmerworm, 137 
pearleaf blister mite, 31 
pepper-and-salt moth, 200 
Phyllonorycter crataegella, 130 
Polydrusus impressifrons, 321 
red spotted purple, 175 
redbanded leafroller, 169 
resplendent shield bearer, 126 
roundheaded appletree borer, 297 
Schizura ipomoeae, 223 
leptinoides, 223 
smeared dagger moth, 236 
Sparganothis sulfureana, 161 
Sphinx drupiferarum, 214 
spring cankerworm, 193 
twinspot sphinx, 215 
unicorn caterpillar, 223 
unspotted leafminer, 131 
variable oakleaf caterpillar, 220 
velleda lappet moth, 206 
western tent caterpillar, 204 
white admiral, 175 
whitemarked tussock moth, 227 
willow flea weevil, 334 
winter moth, 189 
bark, wood, twigs— 
American plum borer, 186 
apple bark borer, 142 
apple twig borer, 257 
banded hickory borer, 289 
537 
