INDEX OF HOST TREES 



261 



Larch, western (continued) 



attacking needles — (continued) 

 sawflies — (continued) 

 Anoplonyx occidens, 120 

 Pristiphora erichsonii, 122 

 in smaller limbs, twigs, or trunk — 

 bark moths — - 



Laspeyresia laricana, 53 

 Laspeyresia leucobasis, 53 

 chermes, Chermes oregonensis, 59 

 leaf feeder, Nepytia canosaria, 101 

 roundheaded borer, Neoclytus muricatulus, 



47 

 twig beetle, Pityophthorus sp., 37 

 in wood — 



flatheaded borers — 



Chrysobothris nixa, 190 

 Chrysobothris spp., 190 

 roundheaded borer, Xylotrechus undulatus, 

 197 

 under bark of main trunk or branches — 

 bark beetles — ■ 



Crypturgus borealis, 166 

 ■■■Dendroctonus pseudotsugae, 155 

 Ips integer, 150 

 Orthotomicus vicinus, 154 

 Polygraphus rufipennis, 166 

 Scolytus laricis, 167 

 flatheaded borer, *Melanophila drummondi, 



171 

 pitch moth, Vespamima novaroensis, 179 

 roundheaded borers — 



Phymatodes dimidiatus, 176 

 Tetropium velutinum, 173 

 Laurel, California (Umbellularia calif ornica)- — 

 attacking leaves — 



leaf beetle, Dichelonyx valida, 125 

 leaf miner, Cameraria umbellulariae, 116 

 in smaller limbs, twigs, or trunk — 



twig beetle, Micracis hirtellus, 39 

 in wood — 



powder-post beetles — 

 Lyctus spp., 204 

 Polycaon confertus, 205 

 Polycaon stouti, 205 

 Scobicia declivis, 205 

 roundheaded borer, Rosalia funebris, 198 

 Madrono (Arbutus menziessi) — 

 attacking leaves — 

 leaf chewers — 



Hyphantria cunea, 88 

 Hyphantria textor, 89 

 Malacosoma constricta, 95 

 Telea polyphemus, 86 

 leaf miners- — 



Coptodisca arbutiella, 115 

 Marmara arbutiella, 115 

 Phyllonorycter arbutusella, 115 

 in smaller limbs, twigs, or trunks — 

 twig beetles — ■ 



Micracis hirtellus, 39 

 Pseudopityophthorus sp., 39 

 twig girdlers, Agrilus arbuti, 46 

 in wood — 



ambrosia beetle, Xyleborus arbuti, 187 

 flatheaded borers — 

 Acmaeodera spp., 191 

 Chrysobothris spp., 190 

 Polycesta spp., 191 

 powder-post beetles — - 

 Polycaon confertus, 205 

 Polycaon stouti, 205 

 roundheaded borers — 



Neoclytus conjunctus, 198 

 Xylotrechus nauticus, 197 

 Maple (Acer spp.) — 

 attacking leaves — - 

 leaf chewers — 



Halisidota maculata, 88 

 Platysamia cecropia, 86 

 Platysamia gloveri, 86 

 Telea polyphemus, 86 

 sawfly, Cimbex americana, 122 

 in or on smaller limbs, twigs, or trunk — 

 flatheaded borer, Chrysobothris malt, 47 



Maple (continued) 



in or on smaller limbs, etc. (continued) 

 roundheaded borer, Phymatodes vulneratus, 



48 

 scale, Lepidosaphis ulmi, 66 

 spider mites — 



Paratetranychus spp., 68 

 Tetranychus spp., 68 

 twig girdler, Agrilus politus, 46 

 in roots of seedlings — 



weevil, Brachyrhinus ovatus, 29 

 in seeds — 



caterpillar, Proteoteras aesculana, 26 

 in wood — 



ambrosia beetles- — ■ 

 Xyleborus arbuti, 187 

 Xyleborinus saxeseni, 187 

 carpenter worm, Prionoxystus robiniae, 199 

 flatheaded borers — 

 Acmaeodera spp., 191 

 Chrysobothris spp., 190 

 Polycesta spp., 191 

 powder-post beetles — 



Hadrobregmus gibbicollis, 206 

 Polycaon confertus, 205 

 Polycaon stouti, 205 

 Scobicia declivis, 205 

 roundheaded borer, Synaphaeta guexi, 198 

 sapwood weevil, Cossonus spp., 198 

 Myrtle, Oregon. See Laurel, California. 

 Mesquite (Prosopis spp.) — ■ 

 in seeds — 



weevils, Bruchus spp., 27 

 in smaller limbs, twigs, or trunk — 



flatheaded borers, Chrysobothris spp., 190 

 twig girdler, Oncideres rhodosticta, 47 

 in wood — 



flatheaded borers — - 

 Acmaeodera spp., 191 

 Chrysobothris octocola, 191 

 Chrysobothris spp., 190 

 Polycesta spp., 191 

 roundheaded borers — 



Megacyllene antennatus, 198 

 Neoclytus caprea, 198 

 Oak (Quercus spp.) — 

 on leaves — 

 leaf chewers — 



Halisidota maculata, 88 

 Hemerocampa gulosa, 93 

 Hemerocampa leucostigma, 93 

 Hemileuca maia, 86 

 Malacosoma calif ornica, 95 

 Malacosoma constricta, 95 

 Malacosoma fragilis, 94 

 Notolophus antiqua, 93 

 Phryganidia californica, 89 

 Telea polyphemus, 111 

 spider mites, Tetranychus spp., 68 

 on twigs — 



scale, Lepidosaphes ulmi, 66 

 in smaller limbs, twigs, or trunk — 

 flatheaded borers — 



Chrysobothris femorata, 47 

 Chrysobothris spp., 190 

 twig girdlers — 



Agrilus bilineatus (Colo.), 46 

 Oncideres quercus (Ariz.), 47 

 Styloxus calif ornicus ( Calif, and Oreg.) , 47 

 in wood — 



ambrosia beetles — 



Monarthrum scutellare, 186 

 Xyleborinus saxeseni, 187 

 carpenter worm, Prionoxystus robiniae, 199 

 clearwinged moth, Ramosia mellinipennis, 



200 

 flatheaded borers — 

 Acmaeodera spp., 191 

 Chrysobothris spp., 190 

 Polycesta spp., 191 

 powder-post beetles, Lyctus spp., 204 

 roundheaded borers — 



Brothylus gemmulatus, 198 

 Neoclytus caprea, 198 

 Necydalis cavipennis, 198 

 Prionus californicus, 193 



