viii LIST OF ILLUSTRATIONS 



FAGE 



Grasshopper : Nymph and Adult 66 



Oblong Leaf-winged Grasshopper. From Harris 67 



Common Cricket. Female. From Harris 68 



Tree Crickets : Male and Female. From Harris 68 



Mole Cricket. From Harris 70 



Squash Bug 73 



Chinch Bug. From Harris 75 



Map showing Distribution of Chinch Bugs. After Webster ... 76 



Periodical Cicada 79 



Tree Hoppers. From Harris 80 



Scale Insects on Rose 83 



San Jose Scale 84 



Black Scale 85 



Spring Grain Aphis. Redrawn from Webster 88 



Eggs of Apple Aphis 91 



Ant attending Aphides 92 



Elm Leaf affected by Aphides 93 



Cicada emerging from Nymph Skin. Photograph by A. H. Verrill . 95 



Fromethea Moth Cocoon 96 



Orange-dog Caterpillars. Photograph by A. H. Verrill. . '. .98 



Butterfly of Orange-dog Caterpillar. Photograph by A. H. Verrill . 99 



Luna Moth 102 



Tent Caterpillar 103 



Gypsy Moth 104 



Army Worm 108 



Cutworm Larva. • From Harris . . . • Iio 



Cotton BoUworm. Photograph by A. H. Verrill Ill 



Codling Moth 113 



Apples showing Calyx Open and Calyx Closed U4 



Leaf Roller Moth. From Harris lie 



Peach-twig Borer. After Clarke 117 



Tineid Moth i ig 



Winter Nest of Brown-tail Moth 121 



Hessian Fly 122 



Hessian Fly Magnified J23 



Apple Maggot ,25 



Channels of Apple Maggot 126 



Cabbage Maggot. Adapted fl-om Washburn 127 



White Grub or May Beetle l^i 



Lamellicom Beetle. From Harris 132 



Potato injured by White Grub i ,2 



