140 



Key to Families of North American Insects. 



Pear Thrips, 16 

 Pea-weevil, 40 

 Periodical Cicada, 73 

 Pickle-moth, 50 

 Pigmy locusts, 13 

 Pine bark-ljeetles, 40 

 Pine saw-flies, 20 

 Pistol case-bearer, 57 

 Plague flea, 73 

 Plant-lice, 76 

 Plum Curculio, 41 

 Polyphemus moth, 52 

 Pomace-fly, 71 

 Poplar weevil, 41 

 Potato-beetle, 40 

 Potato-tuber moth, 56 

 Potter-wasps, 26 

 Powder-post beetles, 34 

 Praying mantis, 16 

 Predatory flower-bug, 78 

 Promethia moth, 52 

 Prominents, 52 

 Prune-twig borer, 34 

 Punkies, 63 



Radish-maggot, 68 

 Rat-flea, 73 



.Hed-hump apple-caterpillar, 52 

 Hoaches, 16 

 Robber-flies, 65 

 Rocky-mountain locust, 13 

 Hoot web- worm, 50 

 Rose-chafer, 41 

 Rosy Aphid, 76 

 Round-head apple-borer, 40 

 Rove-beetles, 32 



Salmon-flies, 44 

 Sand-flies, 43 

 San Jose Scale, 75 

 Saw-flies, 19 

 Scale insects, 75 

 Scorpion-flies, 46 

 Screw-worm, 68 

 Scurfv-scale, 75 

 Sheep bot-fly. 67 

 Shore-bug, 79 

 Shot-hole borer, 40 

 Skippers, 48, 59 

 Soft scales, 75 

 Span-worm, 52 

 Sphinx-caterpillars, 51 

 Spittle insects, 74 

 Spring canker-worm, 52 

 Spruce bark-beetle, 40 

 Squash-borer, 49 

 Squash-bug, 80 



Stable-fly, 68 

 Stalk-borer, 54 

 Stilt-bugs, 80 

 Stink-bugs, 80 

 Stone-flies, 44 



Strawberry crown-moth, 49 

 Strawberry leaf-roller, 57 

 Strawberry root-weevil, 41 

 Strawberry Thrips, 16 

 Swallowtail butterflies, 60 



Tarnished plant-bug, 78 

 Tent-caterpillars, 53 

 Termites, 17 

 Terrapin scale, 75 

 Thrips, 16 

 Tiger-beetles, 31 

 Tiger-moth, 54 

 Timber-beetle, 40 

 True-bugs, 76 

 Tree-crickets, 14 

 Tree-hoppers, 74 

 Tumble-bug, 41 

 Tussock moth, 55 

 Twig-pruners, 40 



Variegated cut-worm, 54 



Walking stick, 14 



Wasps, 19 



Water-boatman, 77 



Water-bugs, 77 



Water scavenger beetles, 32 



Water-scorpions, 77 



Water-striders, 78 



Water-tigers, 31 



Weevils, 30, 41 



\Mieat midge, 63 



^^^leat-stem maggot, 71 



Wheat-stem saw-fly, 20 



W^hirligig beetles, 31 



White ants, 17 



White ermine moth, 54 



WTiite-flies, 76 



White-marked tussock-moth, 55 



WTiite-pine weevil, 41 



Willow saw-fly, 20 



Willow weevil, 41 



Wireworm beetles, 33 



Wood-wasps, 19 



WooUy-bear caterpillars, 54 



Yellow-fever mosquito, 62 

 Yellow-jackets, 26 

 Yellow-neck caterpillar, 52 

 Yellows, 60 

 Yucca moths, 55 



