268 



INDEX OF HOST TREES 



Pine, sugar {continued) 



in smaller limbs, twigs, etc. {continued) 

 flatheaded borers — 



Anthaxia aeneogaster, 47 

 Chrysophana placida, 47 

 scales — 



Matsucoccus paucicicatrices, 64 

 Pityococcus ferrisi, 66 

 twig beetles — ■ 



Carphoborus sp., 37 

 Pityophthorus confertus, 37 

 Pityophthorus confinis, 37 

 Pityophthorus tuberculatum, 37 

 Pityophthorus spp., 37 

 twig moth, Dioryctria abietella, 49 

 twig weevils — 



Cylindrocopturus sp., 42 

 Magdalis lecontei, 42 

 in wood — 



ambrosia beetles — ■ 



Gnathotrichus retusus, 185 

 Gnathotrichus sidcatus, 185 

 flatheaded borers — - 



Buprestis aurulenta, 188 

 Buprestis nuttalli laeviventris, 189 

 Chalcophora anguUcollis, 187 

 Chrysobothris caurina, 191 

 Chrysobothris semisculpta, 191 

 horntails — 



Sir ex aerolatus, 201 



Sirex behrensii, 201 



roundheaded borers — ■ 



Callidium antennatum hesperum, 195 

 Monochamus maculosus, 193 

 Spondylis upiformis, 196 

 Ulochaetes leoninus, 196 

 sapwood weevil, Cossonus spp., 198 

 under bark of large trunk or branches — ■ 

 bark beetles — 



■'Dendroctonus monticolae, 135 

 Dendroctonus valens, 142 

 Hylastes gracilis, 154 

 Hylastes macer, 155 

 Hylurgops porosus, 154 

 bark weevils — 



Pissodes californicus, 178 

 Pissodes yosemite, 178 

 flatheaded borer, Melanophila gentilis, 170 

 pitch moth, Vespamima sequoiae, 178 

 roundheaded borer, Acanthocinus specta- 

 bilis, 174 

 Pine, western white {Pinus monticola) — 

 attacking needles — 



bud moth, Choristoneura fumiferana, 102 

 needleminer, Recurvaria milleri, 109 

 sawfly, Neodiprion edivardsii, 120 

 scale, Phenacaspis pinifoliae, 63 

 in cones or seeds — 

 cone beetles — 



Conophthorus lambertianae, 19 

 Conophthorus monticolae, 19 

 cone moth, Dioryctria abietella, 22 

 in smaller limbs, twigs, or trunk — 

 chermes — 



Pineus coloradensis, 62 

 Pineus pinifoliae, 61 

 flatheaded borer, Chrysophana placida, 4' 

 scales — 



Matsucoccus paucicicatrices, 64 

 Pityococcus ferrisi, 66 

 twig beetles — 



Pityokteines elegans, 38 

 Pityophthorus confertus, 37 

 Pityophthorus confinis, 37 

 Pityophthorus nitidulus, 37 

 Pityophthorus spp., 37 

 twig moth, Dioryctria abietella, 49 

 twig weevil, Pissodes yosemite, 41 

 in wood — 



ambrosia beetles- — 



Gnathotrichus retusus, 185 

 Gnathotrichus sidcatus, 185 

 Trypodendron bivittatum, 186 

 Trypodendron borealis, 186 

 Trypodendron cavifrons, 186 



Pine, western white {continued) 

 in wood — {cojitinued) 

 flatheaded borers — 



Buprestis aurulenta, 188 

 Chrysobothris monticola, 191 

 roundheaded borers — 

 Asemum atrum, 195 

 Monochamus maculosus, 193 

 Monochamus obtusus, 194 

 Spondylis upiformis, 196 

 sapwood weevils — 

 Cossonus spp., 198 

 Rhyncolus spp., 198 

 on needles — 

 leaf chewers— 



Neophasia menapia, 80 

 Lambdina fiscellaria lugagrosa, 97 

 under bark of large trunk or branches — 

 bark beetles — ■ 



Crypturgus borealis, 166 

 * Dendroctonus monticolae, 135 

 Dendroctonus valens, 142 

 Dolurgus pumilus, 166 

 Hylastes nigrinus, 155 

 Hylurgops porosus, 154 

 Hylurgops rugipennis, 154 

 Hylurgops subcostulatus, 154 

 */3>s confusus, 146 

 */ps emarginatus, 148 

 .Tps integer, 150 

 ips latidens, 148 

 /ps vancouveri, 148 

 Orthotomicus vicinus, 154 

 Pityogenes fossifrons, 153 

 Scolytus monticolae, 160.. 

 bark weevils — 



Pissodes coloradensis, 178 

 Pissodes curriei, 178 

 roundheaded borers — - 



Acanthocinus obliquus, 174 

 Tetropium velutinum, 173 

 Pine, whitebark {Pinus albicaulis) — 

 attacking needles — 



bud moth, Argyrotaenia pinatubana, 106 

 in smaller limbs, twigs, or trunk — 



twig beetles, Pityophthorus spp., 37 

 in wood — 



ambrosia beetles — - 



Gnathotrichus sidcatus, 185 

 Trypodendron borealis, 186 

 under bark of large trunk or branches — 

 bark beetles — 



"Dendroctonus monticolae, 135 

 Dendroctonus valens, 142 

 Dryocoetes confusus, 163 

 *Ips emarginatus, 148 

 Ips guildi, 149 

 /ps radiatae, 151 

 Pityogenes carinulatus, 152 

 Pityogenes fossifrons, 153 

 Poplar (Populus spp.) — 

 attacking leaves — 

 leaf beetles — ■ 



Altica ambiens, 123 

 Chrysomela scripta, 124 

 Chrysomela tremulae, 125 

 leaf chewers — 



Halisidota maculata, 88 

 Hemerocampa, leucostigma, 93 

 Hemerocampa vetusta, 93 

 Hemileuca juno, 86 

 Hemileuca maia, 86 

 Hemileuca nevadensis, 86 

 Hyphantria cunea, 88 

 Hyphantria textor, 89 

 Malacosoma californica, 95 

 Malacosoma disstria, 94 

 Malacosoma fragilis, 94 

 Notolophus antiqua, 93 

 Stilpnotia salicis, 93 

 Telea polyphemus, 86 

 leaf miners — 



Phyllocnistis populiella, 116 



