INDEX OF HOST TREES 



259 



Fir, grand (continued) 

 under bark of large trunk, etc. (continued) 

 flatheaded borer, *Melanophila drummon- 

 di, 171 

 Fir, noble (Abies procera) — 

 in cones or seeds — ■ 



cone moth, Dioryctria abietella, 22 

 seed chalcid, Megastigmus pinus, 26 

 in smaller limbs, twigs, or trunk — 

 chermes, Chermes piceae, 59, 69 

 roundheaded borer, Poliaenus or eg onus, 48 

 twig beetles — 



Pityophthorus pseudotsugae, 38 

 Pityophthorus spp., 38 

 twig moth, Dioryctria abietella, 49 

 in wood — 



ambrosia beetles — - 



Gnathotrichus sulcatus, 185 

 Platypus wilsoni, 183 

 Trypodendron sp., 185 

 under bark of main trunk or branches — 

 bark beetle, ■■'Pseudohylesinus nobilis, 162 

 flatheaded borer, Melanophila drummondi, 

 171 

 Fir, Pacific silver (Abies amabilis) — 

 attacking needles — 



bud moth, Acleris variana, 105 

 in cones or seeds — 

 seed chalcids — 



Megastigmus lasiocarpae, 26 

 Megastigmus pinus, 26 

 in smaller limbs, twigs, or trunk- — - 



roundheaded borer, Opsimus quadrilinea- 



tus, 47 

 twig borers — 



Pityophthorus pseudotsugae, 38 

 Pityophthorus spp., 38 

 in wood — 



ambrosia beetle, Gnathotrichus sulcatus, 

 185 

 under bark of large trunk or branches — ■ 

 bark beetles — 



"Pseudohylesinus grandis, 162 

 Pseudohylesinus granidatus, 162 

 Pseudohylesinus nobilis, 162 

 Pseudohylesinus tsugae, 166 

 flatheaded borer, "Melanophila drummon- 

 di, 171 

 Fir, Shasta red (Abies magnifica shastensis)- — 

 in cones and seeds- 

 cone maggot, Lonchaea viridana, 23 

 cone moths — 



Barbara colfaxiana var. siskiyouana, 21 

 Dioryctria abietella, 22 

 Eupithecia togata spermaphaga, 22 

 seed chalcids — 



Megastigmus milleri, 26 

 Megastigmus pinus, 26 

 Megastigmus rafni, 26 

 in smaller limbs, twigs, or trunk- 

 twig beetle, Pityophthorus pseudotsugae, 



38 

 twig moth, Dioryctria abietella, 49 

 in wood — 



ambrosia beetle, Platypus tvilsoni, 183 

 flatheaded borer, Trachykele nimbosa, 190 

 under bark of main trunk or branches — 

 bark beetle, "Scolytus ventralis, 158 

 bark weevil, Pissodes piperi, 178 

 roundheaded borer, ■■■Tetropium abietis, 

 173 

 Fir, white (Abies concolor)- — 

 in cones or seeds — ■ 



cone maggot, Lonchaea viridana, 23 

 cone moths — 



Barbara colfaxiana var. coloradensis, 21 

 Barbara colfaxiana var. siskiyouana, 21 

 Dioryctria abietella, 22 

 Eupithecia togata spermaphaga, 22 

 Laspeyresia bracteatana, 22 

 seed chalcids — 



Megastigmus milleri, 26 

 Megastigmus pinus, 26 

 Megastigmus rafni, 26 

 in roots of seedlings — 



carpenter ants, Camponotus spp., 34 



Fir, white (continued) 



in smaller limbs, twigs, or trunk — 

 aphids — 



Cinara curvipes, 34 



Cinara spp., 57 

 flatheaded borers — 



Chrysobothris spp., 190 



Chrysophana placida, 47 

 roundheaded borers — 



Neoclytus muricatulus, 47 



Phymatodes hardyi, 48 



Poliaenus oregonus, 48 

 scale, Diaspidiotus ehrhorni, 66 

 twig beetles— 



Pityokteines elegans, 38 



Pityophthorus pseudotsugae, 38 



Pityophthorus spp., 38 



Scolytus praeceps, 160 



Scolytus subscaber, 160 

 twig moth, Dioryctria abietella, 49 

 twig weevil, Cylindrocopturus spp., 42 

 in wood — 



ambrosia beetles — 



Gnathotrichus aciculatus, 185 



Gnathotrichus denticulatus, 185 



Gnathotrichus sulcatus, 185 



Platypus toilsoni, 183 

 bark maggot, Cheilosia hoodiana, 203 

 flatheaded borers — 



Buprestis rusticorum, 189 



Chalcophora angulicollis, 187 



Chrysobothris dolata, 191 



Chrysobothris pseudotsugae, 191 



Dicerca tenebrosa, 190 



Trachykele nimbosa, 190 

 horntails — 



Urocerus calif ornicus, 201 



Sir ex juvencus, 201 



Xeris morrisoni, 201 

 roundheaded borers — 



Monochamus oregonensis, 194 



Ulochaetes leoninus, 196 



Xylotrechus abietis, 197 

 on needles — 

 bud moths — - 



■'Choristoneura fumiferana, 102 



Zeiraphera griseana, 109 

 leaf beetles — 



Dichelonyx testaceipennis, 125 



Thricolepis inornata, 125 

 leaf chewers — 



Galenara consimilis, 101 



Halisidota argentata, 87 



Hemerocampa oslari, 93 



Hemerocampa pseudotsugata, 90 

 needle miner, Epinotia meritana, 112 

 under bark of large trunk or branches — 

 bark beetles — 



Hylastes gracilis, 154 



Hylurgops lecontei, 154 



■•'Pseudohylesinus grandis, 162 



Pseudohylesinus granulatus, 162 



'■'Scolytus ventralis, 158 

 bark weevil, Pissodes piperi, 178 

 flatheaded borer, "Melanophila drummondi, 



171 

 roundheaded borers — 



Leptostylus nebulosus, 176 



Semanotus litigiosa, 176 



"Tetropium abietis, 173 

 Hemlock (Tsuga spp.) — 

 in wood — 



roundheaded borer, Opsimus quadrilinea- 



tus, 47 

 sapwood weevil, Rhyncolus spp., 198 

 Hemlock, mountain (Tsuga mertensiana) — 

 in cones or seeds — 



cone moth, Eupithecia togata sperma- 

 phaga, 22 

 seed chalcid, Megastigmas tsugae, 26 

 in smaller limbs, twigs, or trunk — 



flatheaded borer, Chrysophana placida, 47 

 roundheaded borer, Poliaenus oregonus, 48 

 twig beetle, Pityophthorus spp., 39 

 twig weevil, Cylindrocopturus sp., 42 



