468 



INDEX. 



Insect powder, 439. 

 Insecticide, chapter on, 431-455. 

 Insects, defined, 11, 12, 54. 

 Insidious flower-bugs, 156. 

 Introduced insects, 421. 

 Introductory, 9. 

 lo moth, 284. 

 Ipomaea, iarvas on, 264. 

 Ips fasciatus, 181. 

 Isabella moth, 266. 

 Isomera, defined, 165. 

 Isoptera, 64. 

 Isosoma species, 386. 



Jassidas, defined, 147. 

 Jigger-fleas, 329. 

 Joint-wotms, 386. 

 Jug-handle grubs, 254. 

 jumping plant-lice, 137. 

 June-bugs, 200. 



Kainit, against root-lice, 131. 

 Katydids, described, 94. 

 Kermes, described, no. 

 Kerosene as an insecticide, 449. 



how it kills, 38. 

 Kerosene-Linie-K-L. 450. 



Labium, structure and function, 16. 

 Labrum, structure and function, 15. 

 Lace-wing flies, their habits, etc., 74. 

 Lachnosterna, 201. 

 Lady-birds, described, 172. 

 Lajtilia coccidivora, 315. 

 Lamellate attennas, 21. 

 Lamellicornia, defined, 165, 196. 

 Lampyridse, 190. 

 Lancets of fly mouth, 18. 

 Languria mozardi, 176. 

 Lantern-flies, described, 146. 

 Laphria, species, 344. 

 Laphygma frugiperda, 297. 

 Larder-beetles, 178. 

 Larridae, 403. 



Larvas distinguished from worms, 11. 

 Larval stage, 48. 

 Lasioderma serricorne, 193. 

 Lasius species, 394. 

 Lawns, ants on, 395. 



Leaf-beetles, described, 210. 



-chafers, 199. 



-hoppers, described, 146. 

 life-history, 147. 



-roller caterpillars, 319. 

 Leather-beetle, 178. 

 Lebia grandis, 168. 

 Lecanium, defined, 112. 

 Legs, where located, 25. 



structure of, 25. 

 Lema trilineata, 211. 

 Leopard-moth, 287. 

 Lepidoptera, chapter on, 240. 



defined, 54, 55. 

 Lettuce, root-lice on, 127. 

 Leucania albilinea, 296. 



unipuncta, 294. 

 Lice, biting, their habits, etc., 70. 



on domestic animals, 71, 105. 



sucking, 104. 

 Life -history, defined, 50. 



economic importance of, 50 

 Ligyrus rugiceps, 203, 

 Limacodidae, 271. 

 Lime and kerosene, 450. 



and sulphur washes, 442-445. 



as a preventive, 432. 



as an insecticide, 438, 447. 



-tree moth, 308. 

 Limnophilus rhombicus, 78. 

 Litargus, 177. 

 Lixus concavus, 230. 

 Locomotion, organs of, 25. 

 Locust borerj 287. 



leaf-beetle, 222. 

 Locustidse, defined, 93. 

 Locusts or cicadas, 140. 

 Locusts, destructive species, 90. 



remedial measures, 92. 

 London purple, 436. 

 Long-horned beetles, 205. 

 Loopers, 307. 



Losses caused by insects, 9. 

 Louse-flies, 369. 

 Loxostege similalis, 311. 

 Lubber grasshoppers, 91. 

 Lucanidae, 196. 

 Lucanus species, 197. 

 Lucillia macellaria, 357. 



