xii HOST INDEX. 



Alfalfa— (Continued i . PAGE 



Apple leaf-hopper, Empoasca maU -. 63 



Army worm. Cirphis vuipiincta 396 



Bean thrips, Heliothrips fasciatus 52 



Bur clover or cowpea aphis. Aphis medicagmis 90 



Clover-apple aphis, Aphis bakeri *• 88 



Clover seed chalcis, Bruchophagus funepriSr- 368 



Corn ear-worm, Chloridea obsoleta "k5 397 



Cottony cushion or fluted scale, Icerya pur,chasi 110 



Destructive pea aphis, Macrosiphum pi-si 1<>4 



Devastating grasshopper. Melanoplus devastator 4."i 



Differential grasshopper, Melanoplus diffcn *tialis 4d 



False chinch bug, Nysius erica! 207 



Fruit-tree leaf-roller. Arehips argyrospila 439 



Grape leaf-hopper, Ergthroneura <^mcs 65 



Lesser migratory grasshopper, Melanoplus atlanis 43 



Dong-legged grasshopper, CHnopleura melanopleura 34 



obscure 12-spotted cucumber beetle, Diabrotica 12-punctata tenella 273 



Pale-winged grasshopper. Melanoplus iiniformis 47 



Pellucid grasshopper, Camnula pellucida 43 



Red-legged grasshopper, Melanoplus femur-rubrum 4i> 



Red-shouldered plant-bug, Thyanta custator 200 



Red spider, Bryobia pratensis 14 



Serpentine leaf-miner, Agromyza pusilla 345 



Sugar-beet wireworm, Limonius californicus 233 



Tarnished plant-bug, Lygus pratensis 212 



12-spotted cucumber beetle, Diabrotica 12-punctata : 272 



Two-striped grasshopper, Melanoplus bivittatus 44 



Western armyworm, Euxoa agrestis 398 



Western 12-spotted cucumber beetle, Diabrotica soror 271 



Wheat thrips, Frankliniilla tritici .~>1 



Valley grasshopper, (Edaleonotus enigma 4S 



Variegated cutworm. Lycophotia margaritosa 401 



Yellow bear caterpillar, Diacrisia virginica 390 



Yellow-striped armyworm, Prodenia prmfica 402 



Allamanda {Allamanda neriifolia). 



Citrus white fly, Dialeurodcs citri 196 



A llin in cepa — see Onion. 



Almond {Prunus amygdalus). 



Adaleres, Adaleres ovipcnnis 296 



Black fruit-tree weevil, MagdaUs gracilis 3<>2 



Black peach aphis, Aphis persicce-niger !>2 



Black scale, Saissetia olete 154 



Branch and twig-borer, Polycaon con fat its 239 



California peach borer, J'fieria opalcscens 424 



California tussock moth. Hemerocampa vetusta 4<i!) 



Devastating grasshopper, Melanoplus devastator 45 



Greedy scale. Aspidiotus camelliw 17.~> 



Oyster-shell scale, Lepidosaphes ulmi 190 



Peach twig-borer. Anarsia lineatella 44.1 



Pear thrips. Twniothrips pyri ~>7 



Pernicious or San Jose scale, Aspidiotus pernioiosus 17'.» 



Polycaon stoutii 238 



Bed spider, Bryobia pratensis 14 



Small gray leaf-weevil, Thricolepis inomata 300 



Tobacco flea-beetle, Epitrix parvula 1 262 



Two-spotted mile. Tetranychus telariits Id • 



Western striped cucumber beetle. Diabrotica trieittata 27 1 



Two-striped leaf-beetle. Luperodes bivittatus 277 



