Keys— 
aphids, 78 
beetle larvae, 113 
Buprestidae adults, 157 
Buprestidae larvae, 159 
cerambycid larvae, 171 
injuries by Scolytidae and Platy- 
podidae, 229 
orders and families based on types 
of injury, 30 
lepidopterous larvae, 275 
powder-post beetle larvae, 126 
scale insects, 93 
termites, 46 
Kleidocerys resedae geminatus, 67 
Knulliana cincta, 178 
Kratochviliana laricinellae, 454, 473 
Lacewings— 
brown, 43 
golden-eye, 43 
green, 43 
Lachnus, 82 
Lacon— 
avita, 154 
discoidea, 154 
Lacosma chiridota, 347 
Lacosomidae, 347 
Laemobothridae, 40 
Laetilla coccidivora, 102, 105, 360 
Lagoa crispata, 350 
Lagriidae, 116 
Lambdina— 
athasaria athasaria, 345 
athasaria pellucidaria, 345 
endopiaria, 345 
fiscellaria, 344 
Lamellicornia, 114 
Lapara— 
bombycoides, 297 
coniferarum, 297 
Laphria— 
flavicollis, 422 
index, 422 
thoracica, 422 
large aspen tortrix, 383 
Laricobius erichsonti, 89, 124 
Lasiocampidae, 327 
Lasioderma, 127, 327 
Laspeyresia— 
anaranjada, 372 
caryana, 372 
erotella, 373 
ingens, 373 
toreuta, 372 
youngana, 371 
Latrodectus mactans, 5 
leafhopper, 43, 68, 496 
white-banded elm, 69, 500 
leaf miners, 406 
arborvitae, 403, 478 
aspen, 408 
basswood, 141 
birch, 454 
boxwood, 418 
elm, 455 
leaf miners—Continued 
European alder, 456 
gregarious oak, 406 
holly, 426 
lilac, 409 
locust, 143, 472, 478 
sassafras, 409 
solitary oak, 406 
tupelo, 403 
unspotted, 408 
leaf rollers— 
basswood, 350 
fruit tree, 377 
hickory, 384 
locust, 358 
oblique-banded, 383 
red-banded, 384 
lecanium— 
European fruit, 105, 475 
oak, 106 
taxus, 106 
Lecanium— 
caryae, 106 
corni, 105 
fletcheri, 106 
nigrofasciatum, 105 
quercifex, 106 
quercitronis, 106 
Lecanodiaspis tessalatus, 112 
Leperisinus— 
aculeatus, 249 
Lepidoptera, 19, 23, 24, 31, 32, 33, 
34, 35, 36, 38, 274, 415, 423, 430, 
469, 471, 474, 475, 478, 484 
Lepidosaphes— 
ulmi, 109 
yanagicola, 109 
Leptocoris trivittatus, 66 
Leptogaster flavipes, 422 
Leptoglossus— 
corculus, 66 
occidentalis, 66 
Leschenaultia fulvipes, 300 
Lespesia— 
ciliata, 298 
frenchii, 299 
Leucopis obscura, 425 
Leucopomyia pulvinarie, 102 
Lexis bicolor, 307 
Lice— 
book, 42 
chewing, 238 
jumping plant, 76 
plant, 72 
sucking, 40 
wood, 3 
Lichenophanes— 
armiger, 136 
bicornis, 136 
Limacodidae, 347 
Limenitis— 
archippus, 293 
arthemis, 294 
astyanax, 294 
Limnoria lignorum, 3 
Liothrips umbripennis, 42 
Lipoptena, 428 
629 
