428 



GENERAL INDEX 



genitalia, 43, 49 



geographical distribution, 251 



geological history of insects, 86 



gipsy moth, 379, 399, 401 



Glossina, 233, 251 



Gonepteryx, 193 



Gania, 321 



gorse, control of, 418 



Gout fly, see Chlorops. 



grasshoppers, phase development, 311 



development, 211 

 Grylloblatta, 46, 47 

 Gryllus, 7, 104, 105, 148 

 gula, 37 

 gustatory sense, 132 



Habrobracon, 192, 321, 364 



Habrocytus, 364 



Hadejia {Polia), 158, 242 



haemoglobin, 189 



halteres, 154 



harpagones, 45 



harpes, 47 



Hawaiian Islands, biological control in, 



371,393,399,412 

 head, segmentation of, 4 

 heat, effects of, 220 

 Helopeltis, 273 

 Hemiptera, gula, 38 ; genitalia, 47 ; 



fossil forms, 98 ; gustatory organ, 



132; colours of, 184, 188 ; symbionts 



of, 248 

 Hemiteles, 319 

 Hessian fly, see Mayetiola. 

 Heterojapyx, 14 

 Hippodamia, 408 



hormones and metamorphosis, 64 

 host -selection, 286, 318 ; interpretation 



of, 297 

 host-selection principle, 287 

 hot springs, 220 

 house-fly, 243 

 humidity, 228 

 hybridisation, 297 

 Hymenoptera, trochanters, 26 ; larval 



types, 57, 58, 60 ; fossil forms, 91, 94 ; 



parasitism in, 344 

 Hypera, 61 



hypermetamorphosis, 62 

 hyperparasitism, 326, 398 

 Hyphantria, parasites of, 323 

 Hyponomeuta, 288 

 hypopharynx, 14, 15 



Ibalia, 58, 59 



Icerya, 353, 370 



India, prickly pear control in, 416 



indigenous parasites, utilisation of, 405 



intercalary segment, 12 



interference colours, 175 



islands, biological control in, 392 



Isoptera, 35 ; fossil forms, 93 



Isotoma, 28, 29 



Japanese beetle, see Popillia. 

 Japyx, 7, 10, 24, 39, 40, 41 

 Johnston's organ, 141, 143 

 Jurassic insects, 90 



Kennedya, 88, 96 



labium, 35 



labrum, 5, 7 



Lachnosterna, 166 



Lantana, biological control of, 412 



larch sawfly, 386 



larvae, 54, 55 ; types of, 56 



Lebia, 336 



leg, 23 ; primitive structure, 31 



Lemmatophora, 79 



Lepidoptera, genitalia, 47 ; fossil forms, 

 93; colour vision, 114; tympanal 

 organs, 144 ; sound perception in 

 larvae, 149 ; melanism, 196 ; 

 structural colours, 177 ; pigmentary 

 colours, 183 ; fluorescence, 203 



Lepisma, 4, 7, 24, 28 



Leptinotarsa, 159, 255 



Leptomastidea, 378 



Levuana, 387 



light-compass orientation, 122 



light, reactions to, 121, 164 ; action of, 

 235 



Limnerium, 325 



Liothrips, 418 



Lithobius, 14, 26, 32 



Litomastix, 356, 362 



Locusta, 6, 7, 12, 30, 37, 152, 229; 

 coloration, 187 ; phases of, 300, 307 



Locustana, 310 



locustine, 304 



locusts, 299 ; swarming of, 305 

 species of, 306 



Lucilia, 112, 208, 245 



Lygceonematus, 380 



Lymantria, 68 



