Table of Contents 



Leaf Feeders — Continued Page 



B. Sucking Leaf Feeders 1 



1 . Aphids or Plant-lice ] 



a. Green Peach-aphis 1 16 



b. Black Beet-seed Louse 117 



2. True Bugs 1 1 9 



a. False Chinch Bug ' 



b. Tarnished Plant-bug 122 



3 . Leaf-hoppers 123 



a. Sugar Beet Leaf-hopper 1 23 



b. Clover Leaf-hopper 126 



c. Eutettix strobi Fitch 128 



CHAPTER IV 



Beneficial Insects 1 2^ 



A. Predacious Insects 130 



1. Ground Beetles 130 



a. Fiery Hunter 130 



b. Bombardier-beetles 130 



2. Tiger-beetles 131 



3. Lady-beetles or Lady-bugs 132 



4. True Bugs 132 



a. Assassin-bugs 133 



b. Ambush-bugs 13-- 



c. Stink-bugs 133 



5. Lace-winged Flies 133 



6. Wasps 134 



a. Digger-wasps 134 



a-1. Family Scoliidae 134 



a-2. Spider-wasps 134 



a-3. Thread-waisted wasps 134 



b. Solitary Wasps 135 



B. Parasitic Insects 135 



1 . Ichneumon-flies 136 



2. Braconids 136 



3. Chalcis-flies I 37 



Appendix 1 3o 



Bibliography 14 ' 



Index 149 



