276 



GENERAL INDEX 



Dryocoetes {continued) 



confusus, 163, 165 



pseudotsugae, 163 

 Dusts, 68, 77, 109, 222, 223 

 Dusting, aerial, 36, 98, 221, 223 

 Egg galleries, 16, 129 

 Ehrhornia cupressi, 66 

 Elateridae, 30 

 Ellopia. See Lambdina. 

 Enemies, natural, 215 

 Engravers — 



Douglas-fir, 158 



fir, 155 



five-spined — 

 Arizona, 147 

 California. 146 



hemlock, 166 



larch, 167 



pine — - 



California, 150 

 Monterey, 151 

 Oregon, 150 

 sawtooth, 150 

 smaller western, 148 



six-spined, western, 146 



spruce, Sitka, 165 



wood, 152 

 Enoclerus, 137 

 Epinotia meritana, 80, 112 

 Epinotia subviridis, 113 

 Ergates spiculatus, 192 

 Eriophyes. See Phytoptus. 

 Eriophyidae, 68, 69 

 Essigella californica, 56 

 Ethylene dibromide, 30, 31, 32 

 Ethylene dichloride, 25 

 Eucosma, 18, 34, 48, 52 



bobana, 20, 52 



recissoriana, 20, 52 



sonomana, 52 

 Eupithecia togata spermaphaga, 18, 22 

 Exoteleia burkei, 34, 52 

 Filbertworm, 18, 26 

 Fire- 

 scars, 13 



See also Control, burning 

 Firebugs, 172 

 Flagging, 64, 69 

 Flies- 

 parasitic, 216 



range crane, 210 



tachinid, 90, 92, 93 

 Flooding, 13 

 Fog machines, 223 

 Forest — 



damage causes, 13-17 



fires, 11, 12. 13, 215 



management, 7, 11, 218 



plantations, 9, 32 



products insects, 179, 221 



stands, 218 

 Fumigants, 221 

 Fungi, 13, 182, 215 

 Fungus, ambrosial, 182, 184, 187 

 Galenara consimilis, 101 

 Galeruca externa, 210 

 Galerucella decora, 78, 124 

 Gall— 



aphids, 58, 69 



gnats, 23 



insects, 34, 68, 69 



lice, 58, 69 



midges, 23, 69, 70 



mites, 68, 69 

 Galls- 

 cone-shaped, 58, 61 



juniper, 70 



recognition key, 69 



spider mite, 67 



twig, 58 

 Geometrid, fir-cone, 22 

 Geometridae, 96 

 Girdlers, twig, 33, 1,6 

 Givira lotta, 200 

 Gnathotrichus — 



aciculatus, 185 



Gnathotrichus — (continued) 



alni, 185 



denticulatus, 185 



retusus, 185 



sulcatus, 185 

 Gout, fir, 60 



Grasshoppers, 27, 28, 74, 209, 211 

 Hadrobregmus gibbicollis, 206 

 Halisidota — 



argentata, 87 

 sobrina, 88 



ingens, 88 



maculata, 88 



silver-spotted, 87 

 Harmologa. See Choristoneura. 

 Heinrichia, 18 



fuscodorsana, 23 



macrocarpana, 23 

 Hemerocampa — 



gulosa, 93 



leucostigma, 93 



oslari, 93 



pseudotsugata, 90 



vetusta, 93 

 Hemicallidium. See Semanotus. 

 Hemileuca — 



juno, 86 



maia, 86 



nevadensis, 86 



oliviae, 210 

 Hemiptera, 14, 55, 216 

 Hemlock, black check, 202 

 Hexapoda, 14 

 Hibernacula, 49, 93 

 High-risk trees, 133, 219 

 Homoptera, 14 

 Honeydew, 56, 57. 206 

 Horntails, 181, 200 

 Hylastes, 73, 128 



gracilis, 154 



longus, 155 



macer, 155 



mimttus, 155 



nigrinus, 155 



ruber, 155 

 Hylemya cilicrura, 31 

 Hvlesinus — 



Douglas-fir, 161 



hemlock, 166, 202 



Sitka spruce, 165 

 Hylurgops, 73, 128 



lecontei, 154 



porosus, 154 



rugipennis, 154 



subcostulatus, 154 

 Hymenoptera, 14, 77, 114, 116, 216 

 Hyperparasites, 216 

 Hy pliant ria — - 



cunea, 88 



textor, 89 

 Inchworms, 97 

 Ips, 39, 73, 128, 131, 144-151, 163, 166 



cloudcrofti, 148 



concinnus, 165 



confusus, 146, 147, 148 



dubius, 165 



emarginatus, 148 



engelmanni, 165 



guildi, 149 



integer, 150 



inter punctus, 165 



interruptus, 165 



knausi, 148 



latidens, 148 



lecontei, 147 



oregoni, 150 



perturbatus, 165 



pilifrons, 165 



plastographus, 150 



ponderosae, 146 



radiatae, 151 



tridens, 165 



vancouveri, 148 

 Isoptera, 14, 208 

 Itonididae, 23, 70 

 Itycorsia, 78, 120 



