484 



INDEX 



Pine leaf scale, 291 

 Pine, Pitch, attacked by: 



Abbott's pine sawfly, Lophyrus abbotti, 

 258 

 Pine, Short leaf, attaclied by: 



Abbott's pine sawfly, Lophyrus abbotti, 



258 

 Imperial moth, Basilona imperialis, 266 

 Pine, White, attacked by: 



Abbott's pine sawfly, Lophyrus abbotti, 



258 

 Imperial moth, Basilona imperialis, 266 

 Pine bark aphid, Chermes pinicorticis, 



310 

 White pine weevil, Pissodes strobi, 325 

 Pine, White — Susceptibility to insect attack, 



168 

 pinicorticis, Chermes, 310 

 pinifoliae, Chionaspis, 291 

 Pinus austriaca, 292 

 P. cembra, 292 

 P. echinata, 258, 266 

 P. excelsa, 292 

 P. laricis, 292 

 P. mitis, 292 

 P. pumilo, 292 

 P. pyrenaica, 292 

 P. resinosa, 292 

 P. rigida, 258 

 P. strobus, 258, 292 

 P. sylvestris, 292 

 Pissodes strobi, 323 

 Pit-making oak scale, 306 

 placidus, Apateticus, 272 



Plane, American — Susceptibility to insect at- 

 tack, 168 

 Plane, Oriental — Susceptibility to insect at- 

 tack, 168 

 Plant lice, 310 

 Platinus aceiifolia, 314 

 Platinus occidentalis, 315 



Plum, attacked by: . . . „„ 



Cottony maple scale, Pulvinaria vitis, 296 

 English walnut scale, Aspidiotus juglans- 



reglae, 284 

 Forest tent-caterpillar, Malacosoma diss- 



tria, 243 

 Luna moth, Tropea luna, 268 

 Maple and oak twig pruner, Elaphidion 



villosum, 329 

 Maple terrapin scale, Lecanium nigro- 



fasciatum, 300 

 Promethia moth, Callosamia promethia, 



269 

 Red-humped apple worm, Schizura con- 



cinna, 255 

 Viceroy, Basilarchia disippus, 253 

 Poison ivy 



See Ivy poison 

 Polyphemus moth, 267 

 polyphemus, Telea, 267 

 pometaria, Alsophila, 222 

 Poplar and willow borer, 319 

 Poplar, attacked by: 



Cecropia moth, Samia cecropia, 266 

 Cottony maple scale, Pulvinaria vitis, 296 

 Forest tent-caterpillar, Malacosoma diss- 



tria, 243 

 To moth, Automeris io, 271 

 Maple terrapin scale, Lecanium nigro- 



fasciatum, 300 

 May or June beetles, Lachnosterna sp., 



237 

 Mourning cloak butterfly, Euvanessa 



antiopa, 272 „ ,. .^ ^ 



Oak tussock caterpillar, Halisidota macu- 



lata, 245 , .J 



Oyster shell bark louse, Lepidosaphea 



ulmi, 286 , ^ 



Polyphemus moth, Telea polyphemus, 268 



Poplar and willow borer, Crjrptorhynchus, 

 lapathi, 320 



Poplar borer, Saperda calcarata, 318 



Poplar leaf-tyer, Melalopha inclusa, 256 



Promethia moth, Callosamia promethia, 

 269 



Viceroy, Basilarchia disippus, 253 



White marked tussock moth, Hemero- 

 campa leucostlgma, 209 



Willow scurfy scale, Chionaspis salicis- 

 nigrae, 290 

 Poplar, Carolina — Susceptibility to insect at- 

 tack, 168 

 Poplar leaf-tyer, 256 

 Poplar, Lombardy, attacked by: 



Oyster shell bark louse, Lepidosaphes 

 ulmi, 286 



Poplar borer, Saperda calcarata, 318 

 Poplar, Lombardy — Susceptibility to insect 



attack, 168 

 Poplar, Tulip, attacked by : 



Promethia moth, Callosamia promethia, 

 269 



Tulip tree lecanium, Toumeyella lirio- 

 dendri, 301 



Willow scurfy scale, Chionaspis salacis- 

 nigrae, 290 

 Poplar, Tulip — -Eusceptibility to insect attack, 



168 

 Populus alba, 320 

 P. balsamifera, 320 

 P. deltoides, 320 

 P. sp., attacked by: 



Cottonwood leaf beetle, Lina scripta, 260 

 P. tremuloides, 257, 318 

 Porthetria dispar, 175, 273 

 Potassium ferrocyanide, 317 

 Potatoes, attacked by: 



White grubs, Lachnosterna sp., 237 

 Predators : 



AdaUa bipunctata, 311 



Anatis 15-punctata, 311 



A. ocellata, 299 



Apateticus maculiventris, 221 



A. placidus, 272 



A. serieventris, 272 



Assassin bugs, 315 



Baccha fascipennis, 299 



Beetles 225 



Birds, 210, 215, 217, 225, 229, 238, 240, 

 243, 251, 272, 287, 297, 307, 323, 

 324, 325, 329, 330 



Black-billed cuckoo, 240, 272 



Calosoma calidum, 249 



C. scruUtor, 243, 249, 272 



C. wilcoxii, 243 



Chilocorus bivulnerus, 282, 289, 291, 

 292, 296, 299, 300, 304 



Chrysopa sp., 292, 299, 309, 310, 311 

 315 , 



Cocinella picta, 292 



Cybocephalus nigritulus, 292 



Dermestids, 211 



English sparrow, 297 



Fly, 298, 299 



Ground beetles. 261 



Hyperaspis signata, 298, 299 



H. signata biontata, 296, 301, 303 



H. sp., 288 



Lady beetles, 261, 263, 282, 287, 291, 

 295, 296, 298, 300, 301, 303, 304, 

 309, 310, 311 



Megilla niaculata. 311 



Microwesia misella, 2S2 



Mite, Hemisarcoptes coccisugus, 287 



Mites 306, :!09, 315 



Podisus placidus, 251 



Reduviidae, 315 



Scymnus sp., 292 



Mote: The figures in heavy black type refer to the principal discussion of the subject. 



