43 6 



INDEX 



U 



Umber moth, mottled, 207 

 Undcrwing moths, 198 

 Upper Austral zone, 61 

 Utilization of parasitic insects, 401 



Variable currant aphis, 147 



V^ariegated cutworm, 186 



Venation of wings, 15, 139, 158, 170-173, 



240-241, 344 

 Vespa, 356 

 Vespidae, 356 

 Vespoidea, 345, 356 

 Violet gall fly, 90 

 Vermorel nozzle, 380 



W 



Wheat thrips, 122 



wineworm, 295 

 Wheeler, Dr. W. M., 59 

 Whirligig beetles, 282 

 W'hite ants, 102 



banded cherry fruit fly, 265 



cedar twig borer, 233 



cutworm, 192 



fly, 90, 122, 151 



grubs, 56, 71, 72, 77, 302 



lined sphinx, 178 



marked tussock moth, 202 

 Willow flea beetle, 311 

 Wings, 15, 16 



Winthemia 4-pustulata, 184, 190 

 Wire-netting, 397 

 Wireworms, 71, 72, 77, 293 

 Wood lice, 363 

 Woolly aphis of apple and elm, 77, 89, 



145 

 maple leaf scale, 133 



W-marked cutworm, 185 



Wash for tree trunks, 396 



Walking sticks, 106 



Walnut caterpillar, 88, 199 



Walsh, B. D., xiii 



Warble flies, 91, 255-258 



Wasps, 356 



Water scavengers, 282 



Webbing clothes moths, 82, 237 



Webster, F. M., xi, 63, 401 



Web worms, 210 



Weevils, 329 



Western corn root worm, 308 

 hemlock woolly aphis, 149 

 wheat stem sawfly, 71, 349 

 willow leaf beetle, 310 



Whaleoil soap, 390 



Wheat insects, 71 

 jointworm, 354 

 midge, 72, 249 

 plant louse, 71, 142 

 stem maggot, 71, 72, 260 



sawfly, 349 

 straw worm, 354 



X 



Xiphidium, 114 

 Xylocopa, 357 



Yellow bear caterpillar, 181 

 fever, 83 



headed cutworm, 188 

 mealworm, 76, 328 

 necked caterpillar, 79, ic 



Yponomeuta malina, 233 

 padella, 233 



Yponomeutidae, 233 



Zebra caterpillar, 76, 188 

 Zenoleum, 396 

 Zeuzera pyrina, 88, 237 

 Zophodia grossularise, 85 



