Index 



ichneumon fly. Fig. 59 



imagOj 6, 13 



insect, definition of, i 



Insecta, Class, i, 3 



insects, 



pests of cultivated crops, 119 

 origin and evolution of, 4 

 and us, 119 



instar, 53 



instinctive behaviour, 86 



intelligence, in insects, 107 



integument, i 



internal structure, 30J Fig. 16 



intestine, 30 



Isoptera, 14, 97 



jugum, 19 

 jumping, 75 



king-crabs, 3 



labellum, 20 

 labium, 3, 26 

 lacewings, 16 

 lac insect, 130 

 lantern-flies, 16, 114 

 larva, 7, 55; Figs. 15, 33 

 leaf, 



butterflies, 112; Fig. 71 

 cutting bees, 22, loi 

 hoppers, 16 

 insects, 10, 112 

 worms, of cotton, 122 

 legs 



parts of, 27 



adaptation of, 1 1 1 



false, 3 



segmented, 3 

 lens-cylinder, 60; Fig. 36 

 Lepidoptera, 19 



feeding of, 42 

 Levuana, 122 

 lice, 15, 128; Fig. 8 

 light-compass reaction, 91, 107 

 lobsters, 3 

 locusts, ID, 12 



swarms of, 89 

 long-horned grasshoppers, 12; Fig. 



14 

 looper caterpillar, 73; Fig. 39 

 losses through insect damage, 125 

 Lucanidae, 114 



Macrolepidoptera, 19 



maggots, 21 



Mallophaga, 15 



Malpighian tubules, 30 



mandibles, 3, 26 



mantids, 10 



Mantispidae, 16 



mask, of dragonfly nymphs, 13, 113 



mason-bees, loi 



maternal care of young, 95 



mating-flights, 49 



mayflies, 6, 12; Figs. 4, 23 



wings of, 82 

 maxillae, 3, 26 

 mechanical transmission of disease, 



127 

 Mecoptera, 19; Fig. 31 

 Megachile, 10 1 

 Megaloptera, 16; Fig. 30 

 Membracidae, 114 

 memory, 109 

 mesothorax, 27 

 metathorax, 27 

 Microlepidoptera, 19 

 Micropterygidae, 20 

 midges, 20 



swarms of, 89 

 migration, 90 

 millipedes, 3 

 mimicry, 116; Figs. 71, 72 



Batesian, 116 



MiJllerian, 118 

 mirids. Figs. 11, 12 

 mites, 3 



mole-cricket, 12, iiij Fig. 2 

 Monarch butterfly, 90 

 morphology, 26 

 mosquitoes, 20 



diseases transmitted by, 128 



larvae of. Figs. 22, 45 



pupae of. Fig. 46 

 moths, 19 



as pests, 122 

 moulting, i 

 mouth-hooks, 44, 73 

 mouthparts, 3, 26; Figs. 14, 25 



adaptations of, no 

 muscular movement, 72^ Fig. 48 

 mutillid wasps. Fig. 62 

 Myriapoda, 3, 4 

 Myrmeleontidae, 16; Fig. 26 



larvae of, 94 



136 



