270 



INDEX OF HOST TREES 



Spruce, blue (continued) 



under bark of large trunk, etc. (continued) 

 bark beetles — ■ (continued) 



Dryocoetes affaber, 165 



Polygraphus rufipennis, 166 

 Spruce, Engelmann (Picea engelmanni) — 

 attacking needles — - 

 bud moths — 



Acleris variana, 105 



■■'Choristoneura fumiferana, 102 



Zeiraphera griseana, 109 



Zeiraphera ratzeburgiana, 10S 

 caterpillars — 



Galenara consimilis, 101 



*Lambdina fiscellaria lugabrosa, 97 



Nepytia canosaria, 101 



Nepytia phantasmaria, 101 

 needle miner, Taniva albolineana, 111 

 in cones or seeds — 



cone moth, Laspeyresia youngana, 22 

 seed chalcids — 



Megastigmus piceae, 26 



Megastigmus piceae montana, 26 

 in smaller limbs, twigs, or trunk — 

 aphids — ■ 



Cinara spp., 57 

 chermes — - 



Chermes cooleyi, 58 



Pineas boycei, 62 



Pineus pinifoliae, 61 



Pineus similis, 62 

 pitch nodule moth, Petrova burkeana, r>2 

 twig beetles — 



Pityojyhthorus pseudotsugae, 38 



Pityophthorus nitidulus, 37 



Pityophthorus tuberculatus, 37 



Pityophthorus spp., 39 

 twig moth, Eucosma sonoma)ia, 52 

 twig weevils — 



Magdalis alutacea, 42 



Pissodes engelmanni, .10 

 in wood — 



ambrosia beetles— 



Gnathotrichus sidcatus, 185 



Trypodendron bivittatum, 186 



Trypodendron borealis, 186 



Trypodendron ponderosae, 186 

 flatheaded borer, Dicerca tenebrosa, 190 

 other wood borer. Serrapalpus barbatus, 



198 

 roundheaded borer, Xylotrechus undulatus, 



197 

 under bark of large trunk or branches — 

 bark beetles — 



Crypturgus borealis, 166 



■■'Dendrocto7ius borealis, 164 



■■'Dendroctonus engelmanni, 163 



Dolurgus pumilus, 166 



Dryocoetes affaber, 165 



Dryocoetes confusus, 163 



Hylastes macer, 155 



Hylurgops rugipennis, 154 



Ips dubius, 165 



Ips engelmanni, 165 



Ips interpunctus, 165 



"Ips pilifrons, 165 



Ips tridens, 165 



Orthotomicus vicinus, 154 



Polygraphus rufipennis, 166 



Scierus annectens, 166 



Scolytus piceae, 165 

 bark weevil, Pissodes coloradensis, 178 

 flatheaded borer, Melanophila drummondi, 



171 

 Spruce, Sitka (Picea sitchensis) — 

 attacking needles — 

 bud moths — 



Acleris variana, 105 



Choristoneura fumiferana, 102 



Zeiraphera ratzeburgiana, 108 

 leaf chewers — 



Halisidota argentata, 87 



*Lambdina fiscellaria lugubrosa, 97 



Nepytia -phantasmaria, 101 

 needle miner, Taniva albolineayia, 111 



Spruce, Sitka (continued) 

 in cones or seeds — 

 cone moths — 



Heinrichia fuscodorsana, 23 



Laspeyresia youngana, 22 

 seed chalcid, Megastigmus piceae, 26 

 in smaller limbs, twigs, or trunk — 

 aphids — 



Cinara spp., 57 



Neomyzajihis abietina, 56 

 chermes — 



Chermes cooleyi, 58 



Pineus pinifoliae, 61 

 pitch nodule moth, Petrova burkeana, 52 

 roundheaded borer, Opsimus quadrili>iea- 



tus, 47 

 spider mite, Paratetranychus spp., 68 

 twig beetle, Pityophthorus nitidulus, 37 

 twig weevil, Pissodes sitchensis, 40 

 in wood — 



ambrosia beetles — - 



Gnathotrichus sulcatus, 185 



Trypodendron bivittatum, 186 



Trypodendron cavifrons, 186 

 flatheaded borer, Buprestis aurulenta, 188 

 roundheaded borers — 



Asemum atrum, 195 



Leptura obliterata, 196 

 under bark of large trunk or branches — 

 bark beetles — 



Crypturgus borealis, 166 



"Dendroctonus obesus, 164 



Dolurgus pumilus, 166 



Dryocoetes affaber, 165 



Hulurgops rugipennis, 15 1 



■•'Ips concinnus, 165 



Ips inter ruptus, 165 



Ips tridens, 165 



Ips vancouveri, 148 



Polygraphus rufipennis, 166 



Pseudohylesinus sitchensis, L65 

 bark weevil, Pissodes costatus, 178 

 flatheaded borer, Melanophila drummondi, 



171 

 pitch moth, T'espamima novaraensis, 179 

 roundheaded borer, Tetropium velutinum. 



173 

 Spruce, western white (Picea glauca alberti- 

 ana) — 

 attacking needles — ■ 



bud moth, Choristoneura fumiferana, 102 

 in smaller limbs, twigs, or trunk — - 

 leaf feeder, Nepytia canosaria, 101 

 twig beetles — - 



Carphoborus sp., 37 



Pityophthorus spp., 37 

 in wood — 



ambrosia beetles — - 



Trypodendron bivittatum, 186 



Trypodendron borealis, 186 

 under bark of large trunk or branches — ■ 

 bark beetles — 



Crypturgus borealis, 166 



"Dendroctonus borealis, 164 



■■'Dendroctonus engelmanni, 163 



Dryocoetes affaber, 165 



Ips engelmanni, 165 



Ips interpunctus, 165 



Ips interruptus, 165 



Ips perturbatus, 165 



Polygraphus rufipennis, 166 



Scierus annectens, 166 



Scolytus piceae, 165 

 bark weevil, Pissodes coloradensis, 178 

 Sycamore (Platanus spp.) — 

 attacking leaves — 



leaf miner, Phyllonorcyter ielinella, 115 

 red spider, Tetranychus spp., 68 

 in smaller limbs, twigs, or trunk — 

 flatheaded borers — 



Chrysobothris femorata, 47 



Chrysobothris malt, 47 

 i n wood — 



clear-winged moth. Eanwsia meUinipennis 



200 



