INDEX OF HOST TREES 



263 



Pine, bristlecone (continued) 



under bark of main trunk or branches — ■ 

 bark beetle, ^Dendroctonus ponderosae 

 (Rocky Mts.), 139 

 Pine, Coulter (Pinus coulter i) — - 

 attacking needles — 



aphid, Essigella californiea, 56 

 scale, Nuculaspis californiea, 63 

 in cones or seeds — 



cone borer, Chrysophana placida conicola, 

 23 

 in smaller limbs, twigs, or trunk — 

 flatheaded borers — 



Anthaxia aeneogaster, 47 

 Chrysophana placida, 47 

 scale, Toumeyella pinicola, C6 

 twig beetles — 



Carphoborus sp., 37 

 Pityophthorus confertus, 37 

 Pityophthorus confinis, 37 

 Pityophthorus tuberculatus, 37 

 Pityophthorus spp., 37, 73, 154 

 twig weevil, Cylindrocopturus sp., 42 

 in wood — 



ambrosia beetle, Xyleborus scopulorum, 186 

 flatheaded borer, Buprestis aurulenta, 188 

 under bark of large trunk or branches — 

 bark beetles — 



"Dendroctonus brevicomis, 132 

 ■'Dendroctonus valens, 142 

 */jjs confusus, 146 

 Ips latidens, 148 

 flatheaded borer, Melanophila californiea, 



170 

 roundheaded borer, Acanthocinus specta- 

 bilis, 174 

 Pine, digger (Pinus sabiniana) — 

 in smaller limbs, twigs, or trunk — 

 aphid, Cinara sp., 57 

 flatheaded borers — 



Anthaxia aeneogaster, 47 

 Chrysophana placida, 47 

 pitch nodule moth, Petrova sabiniana, 52 

 twig beetles — 



Carphoborus sp., 37 

 Pityophthorus spp., 37, 73, 154 

 Pityophthorus tuberculatus, 37 

 twig weevil, Cylindrocopturus sp., >'2 

 in wood — 



flatheaded borers — 

 Buprestis aurulenta, 188 

 Buprestis nuttalli laeviventris, 189 

 Chalcophora angulicollis, 187 

 Chrysobothris monticola, 191 

 roundheaded borer, Asemum nitidum, 19i> 

 sapwood weevil, Cossonus spp., 198 

 on needles — 



bud mite, Phytoptus pini, '"9 



leaf weevil, Scythropus californicus, 125 



scales — 



Matsucoccus fasciculensis, 64 

 Nuculaspis californiea, 63 

 Phenacaspis pinifoliae, 63 

 under bark of main trunk or branches — 

 bark beetles — 



Dendroctonus valens, 142 

 ■■'Ips confusus, 146 

 Ips latidens, 148 

 Ips oregoni, 150 

 Ips ponderosae, 146 

 flatheaded borer. Melanophila californiea, 

 170 

 Pine, foxtail (Pinus balfouriana) — 

 attacking needles — 



scale, Matsucoccus acalyptus, 64 

 in smaller limbs, twigs, or trunk — 



twig beetle, Pityophthorus spp., 37, 73, 15 i 

 in wood — 



ambrosia beetle, Gnathotrichus sulcatus, 

 185 

 under bark of main trunk or branches — 

 bark beetles — 



■'Dendroctonus nwnticolae, 135 

 Dendroctonus valens, 142 

 Hylurgops porosus, 154 



Pine, foxtail (continued) 



under bark of main trunk, etc. (continued) 

 dark beetles — (continued) 



Hylurgops rugipennis, 154 



■'■'Ips confusus, 146 

 Pine, Jeffrey (Pinus jeffreyi) — 

 attacking needles — 



leaf beetle, Dichelonyx crotchi, 125 

 leaf chewer, -'Coloradia pandora, 83 

 leaf miner, Recurvaria milleri, 109 

 leaf weevils — ■ 



Scythropus albidus, 125 



Scythropus californicus, 125 



Scythropus ferrugineus, 125 

 sawflies, Neodiprion spp., 120 

 scales — 



Matsucoccus fasciculensis, 64 



Nuculaspis californiea, 63 



Phenacaspis pinifoliae, 63 

 spider mite, Phytoptus pini, 69 

 in cones or seeds — 



cone beetle, Conophthorus ponderosae, 19 

 cone moths — 



Dioryctria abietella, 22 



Dioryctria xanthoenobares, 20 



Eucosma bobana, 20 



Laspeyresia piperana, 20 

 in smaller limbs, twigs, or trunk — ■ 

 aphids — ■ 



Cinara spp., 57 

 bark beetles — 



Carxthoborus spp., 37 



Pityogenes carinulatus, 152 



Pityophthorus confertus, 37 



Pityophthorus confinus, 37 



Pityophthorus tuberculatus, 37 



Pityophthorus spp., 37, 73, 154 

 chermes, Pineus coloradensis, 62 

 flatheaded borers — 



Anthaxia aeneogaster, 47 



Chrysobothris spp., 190 



Chrysophana placida, 47 

 roundheaded borer, Phymatodes hirtellus, 



48 

 scales — 



Matsucoccus bisetosus, 64 



Matsucoccus californicus, 64 

 twig moths — 



Dioryctria abietella, 49 



Dioryctria xanthoenobares, »!9 



Eucosma bobana, 52 

 twig weevils — 



Cylindrocopturus eatoni, 44 



Magdalis cuneiformis, 42 



Magdalis gentilis, 42 



Magdalis lecontei, 42 



Pissodes yosemite, 41 

 in wood — 



ambrosia beetles — 



Gnathotrichus retusus, 185 



Xyleborus scopulorum, 186 

 flatheaded borers — 



Buprestis aurulenta, 188 



Buprestis connexa, 189 



Buprestis nutalli laeviventris, 189 



Chalcophora angulicollis, 187 



Chrysobothris californiea, 190 



Chrysobothris caurina, 191 



Chrysobothris dentipes, 191 



Chrysobothris monticola, 191 



Chrysobothris semisculpta, 191 



Dicerca sexualis, 190 



Dicer ca tenebrosa, 190 

 horntails — 



Sir ex aerolatus, 201 



Sir ex californicus, 201 

 roundheaded borers — 



Asemum atrum, 195 



Asemum molcelumne, It? 



Asemum nitidum, 196 



Ergates spiculatus, 192 



Monochamus maculosus, 193 



Ulochaetes leoninus, 19u 

 sapwood weevils — 



Cossonus spp., 198 



Rhyncolus spp., 198 



