firtree borer, 307 
flatheaded fir borer, 284 
four-eyed spruce bark beetle, 352 
Gnathotrichus materiarius, 372 
hemlock borer, 284 
Hylobius congener, 326 
Aylurgops pinifex, 340 
Neoclytus muricatulus muricatulus, 
295 
Orthotomicus caelatus, 358 
pales weevil, 323 
Phymatodes dimidiatus , 306 
pine spittlebug, 72 
red turpentine beetle, 347 
spruce scolytus, 356 
whitespotted sawyer, 313 
buds, shoots, roots— 
eyespotted bud moth, 154 
larch shoot borer, 140 
spruce budworm, 164 
flowers, seeds, fruits— 
Nepytia pellucidaria, 198 
Zeiraphera improbana, 157 
sucking insects— 
Adelges laricis, 84 
lariciatus, 84 
Larch, Dahurian: 
larch sawfly, 402 
Larch, eastern: See: tamarack 
Larch, European: 
Adelges laricis, 84 
eastern larch beetle, 349 
larch sawfly, 402 
Larch, Japanese: 
larch sawfly, 402 
Larch, Siberian: 
larch sawfly, 402 
Larch, subalpine: 
larch sawfly, 402 
Larch, western: 
larch sawfly, 402 
Laurel: 
dogwood twig borer, 299 
eyespotted bud moth, 154 
rhododendron borer, 142 
Lilac: 
great ash sphinx, 214 
laurel sphinx, 214 
lilac borer, 143 
lilac leafminer, 131 
Olcerlostera angelica, 201 
oystershell scale, 114 
promethea moth, 207 
waved sphinx, 213 
white prunicola scale, 118 
Linden: See: basswood 
Locust: 
cottony maple scale, 97 
locust leafroller, 186 
twig pruner, 302 
Locust, black: 
foliage— 
Agonopterix robiniella, 132 
bagworm, 126 
Chrysaster ostensachenella, 130 
claycolored leaf beetle, 266 
crinkled flannel moth, 176 
Dasineura pseudacaciae, 442 
giant walkingstick, 51 
hickory tussock moth, 223 
io moth, 208 
locust leafminer, 264 
locust leafroller, 186 
Nematus abbotii, 406 
tibialis, 406 
Nephopteryx virgatella, 186 
Parectopa robiniella, 131 
pepper-and-salt moth, 200 
Pero honestaria, 197 
Phyllonorycter robiniella, 130 
redhumped caterpillar, 222 
Schoene spider mite, 31 
Semiothisa ocellinata, 191 
silverspotted skipper, 172 
spotted tussock moth, 224 
walkingstick, 50 
bark, wood, twigs— 
Agrilus egenus, 280 
carpenterworm, 146 
claycolored leaf beetle, 266 
lesser cornstalk borer, 186 
Lichenophanes bicornis, 257 
locust borer, 286 
locust twig borer, 160 
painted hickory borer, 287 
Xyleborus affinis, 374 
buds, shoots, roots— 
Obolodiplosis robiniae, 445 
sucking insects— 
cowpea aphid, 79 
Thelia bimaculata, 71 
threecornered alfalfa hopper, 71 
Vanduzeea arquata, 71 
M 
Magnolia: 
foliage— 
Endopiza liriodendrana, 160 
Odontopus calceatus, 334 
Phyllocnistis magnoliella, \31 
Phyllophaga forsteri, 269 
Tetranychus magnoliae, 31 
bark, wood, twigs— 
black twig borer, 375 
Euzophera magnolialis, 187 
ostricolorella, 187 
Platypus compositus, 376 
Xyvloterinus politus, 371 
buds, shoots, roots— 
Euzophera magnolialis, 187 
sucking insects 
camellia scale, 115 
common falsepit scale, 104 
dentate scale, 123 
magnolia scale, 96 
oleander scale, 107 
redbay scale, 107 
striped mealybug, 91 
Trioza magnoliae, 77 
tuliptree aphid, 79 
tuliptree scale, 99 
Magnolia, star: 
calico scale, 94 
Mahogany: 
oriental wood borer, 258 
Mahonia: 
Parrott scale, 105 
553 
