486 



INDEX 



Soluble or miscible oils, 204, 282, 284, 285, 



287, 289, 291, 292, 294, 295, 297, 299, 



300, 302, 303, 304, 306, 308, 309, 312 

 Soluble sulphur compound, 203, 293 

 Sorrel tree, attacked by: 



Yellow-necked apple Datana, Datana 

 misistra, 230 

 Sour gum, attacked by: 



Forest tent- caterpillar, Malacosoma diss- 

 tria, 243 

 Sour wood, attacked by: 



Oak tussock caterpillar, Halisidota macu- 

 lata. 244 



Whilte marked tussock moth, Hemero- 

 campa leucostigma, 210 



Yellow-necked apple Datana, Datana 

 miuistra, 230 

 Soybean, attacked by: 



Locust leaf beetle, Chalepus dorsalis, 233 

 Spathius, trifasciata, 321 

 S. unifasciatus, 321 

 Species of trees for planting, 167 

 Sphingidae, 239 

 Sphoerostilbe cocophila, 282 

 Spice bush, attacked by: 



Maple terrapin scale, Lecanium nigro- 

 fasciatum, 300 



Promethia moth, Callosamia promethia, 

 269 

 Spider mite 



See Red spider 

 Spiders, Predaceous, 315 

 Spilochalcis odontotae, 235 

 Spiny elm caterpillar 



See Mourning cloak butterfly 

 Sporotrichum globuliferum, 220 

 Spotted willow leaf beetle, 261 

 Spraying equipment accessories, 195 



Clothing for workmen, 195 



Covers for horses, 195 



Protective lotions, 196 



Tool kit, 195 

 Spraying machinery, 185 

 Spraying machines 



Hand mist sprayers, 186 



Power mist sprayers, 186 



Solid stream sprayers, 189 

 Spraying materials, 196 

 Spring cankerworm, 222 

 Spruce, attacked by : 



Imperial moth, Basilona imperialis, 266 



White marked tussock moth, Hemero- 

 campa leucostigma, 209 



White pine weevil, Pissodes strobi. 325 

 Spruces — Susceptibility to insect attack, 168 

 Sting bugs, 211, 221 

 Strawberry, attacked by: 



Forest tent-caterpillar, Malacosoma diss- 

 tria. 243 

 strobi, Pissodes, 323 

 styraciflua, Liquidambar, 243 

 Sugar maple — Susceptibility to insect attack, 



168 

 Sulphur sprays, 201, 221, 282, 284, 285, 287, 



289, 290, 291, 292, 293, 294, 295, 301, 



303, 308, 312, 315 

 Sumac, attacked by: 



Cottony maple scale, Pulvinaria vitis, 296 



Hickory horned-devil, Citheronla regalis, 

 264 



Hickory tussock moth, Halisidota caryae, 

 247 



Maple and oak twig pruner, Elaphidion 

 villosum, 329 



Yellow-necked apple Datana, Datana 

 ministra, 230 

 Sumac, Poison, attacked by: . ., ^ 



Oak tussock caterpillar, Halisidota macu- 

 lata, 245 



Susceptibility of common trees to insect at« 



tack, 168 

 Sweet gum, attacked by: 



Bag or basket worm, Thyridopteryx 

 ephemeraeformis, 217 



English walnut scale, Aspidiotus juglans- 

 regiae, 284 



Forest tent-caterpillar, Malacosoma diss- 

 tria, 243 



Hickory horned-devil, Citheronia regalis 

 264 



Imperial moth, Basilona imperialis, 266 



Luna moth, Tropea luna, 267 



Promethia moth, Callosamia proiuethia, 

 269 

 Swine, 238 



Sycamore lace bug, 314 

 Sycamore or buttonwood, attacked by: 



Cottony maple scale, Pulvinaria vitis, 296 



lo moth, Automeris io, 271 



Maple terrapin scale, Lecanium nigro- 

 fasciatum, 300 



Pigeon tremex, Tremex columba, 322 



Polyphemus moth, Telea polyphemus, 267 



Sycamore lace bug, Corythuca ciliata, 315 

 Sycamore maple — Susceptibility to insect at- 

 tack, 168 

 sylvatica, Nyssa, 243 

 Symmerista albifrons, 253 

 Sympiezus uroplatae, 235 

 Synanthedon acerni, 322 

 Syrphid, 299, 309, 310 

 Tachnids, 229, 240, 246, 252, 264, 268 

 Tachina bifasciata, 252, 264 

 Tachina mella, 243 

 Tanglefoot, Tree 



See Tree tanglefoot 

 Taylor, A. E., 259 

 Telea polyphemus, 267 

 Telenomus graptae, 272 

 Tenebrionidae, 325 

 tessellaris, Halisidota, 245 

 Tetranychus sp., 308 

 Thalessa lunator, 322 

 Thorn 



See Craetegus 

 thridopterigis,, Allocota, 217 

 Thyridopteryx ephemeraeformis, 182, 215 

 Tree doctors, quacks, etc., 185 

 Titmice, 287 

 Tobacco extract 



See Nicotine sulphate 

 Tomato or tobacco horn worm, 238 

 Tool kit, 195 

 Toumeyella liriodendri. 301 

 Tree of Heaven, attacked by: 



Rose scale, Aulacaspis rosae, 295 

 Tree of Heaven— Susceptibility to insect at- 

 tack, 168 

 Tree seedlings, attacked by: 



White grubs, Lachnosterna sp., 237 

 Tree tanglefoot, 205, 221, 225, 244, 276 

 Tremex columba, 321 

 Trichogramma odontotae, 234, 235 

 Tropea luna, 268 

 Trouvelot, Prof. Leopold, 273 

 Tulip or tulip poplar 



See Poplar, Tulip 

 Tulip tree lecanium, 301 

 Tussock moth 



See white marked tussock moth 

 Tyroglyphus malus, 288 

 ulmi, Gossyparia, 303 

 ulmi, Lepidosaphes, 285 

 ulmicola, Colopha, 311 

 trimus americana, 291, .304 

 V. fulva, attacked by: 



European elm scale, G-ossyparia spuria, 

 304 



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



