416 
Betula fontinalis (Water 
Birch) 
Calaphis coloradensis 
Calaphis granovskyi 
Neosymydobius intermedius 
Betula papyrifera (Paper 
Birch) 
Neosymydobius annulatus 
Bidens sp. (Beggarticks) 
Macrosiphum chrysanthemi 
Pemphigus balsamiferae 
Rhopalosiphum nymphaeae 
Bindweed—see Convolvulus 
Birch—see Betula 
Bitterbrush—see Purshia 
Blackberry—see Rubus 
Blackcap—see Rubus 
Blackeyedsusan—see 
Rudbeckia 
Black Locust—see Robinia 
Bluebell—see Mertensia 
Bluegrass—see Poa 
Boneset, False—see Kuhnia 
Boxelder—see Acer 
Bramble—see Rubus 
Brassica sp. 
Brevicoryne brassicae 
Brassica napus (Rape) 
Myzus persicae 
Rhopalosiphum 
pseudobrassicae 
Brassica oleracea (Cabbage) 
Brevicoryne brassicae 
Myzus persicae 
Brassica oleracea var. 
botrytis (Cauliflower) 
Brevicoryne brassicae 
Myzus persicae 
Brassica rapa (Turnip) 
Rhopalosiphum 
pseudobrassicae 
Brickellia grandiflora 
(Tasselflower Brickellia) 
Macrosiphum katonkae 
Broadbean—see Vicia 
Bromus inermis (Awnless 
Brome-grass) 
Forda olivacea 
Bromus tectorum (Smooth 
Brome) 
Forda olivacea 
Brookgrass—see Catabrosa 
Brook Snakeweed—see 
Gutierrezia 
Buckthorn—see Rhamnus 
Buckthorn, Sea—see 
Hippophae 
Buffaloberry—see 
Shepherdia 
Bulrush—see Scirpus 
Burdock—see Arctium 
Burnut—see Tribulus 
APHIDS OF THE ROCKY MOUNTAIN REGION 
Bursa bursa-pastoris—see 
Capsella 
Burweed—see Xanthium 
Buttercup—see Ranunculus 
Butterweed—see Senecio 
Cabbage—see Brassica 
Calendula officinalis 
(Potmarigold) 
Callalily—see Zantedeschia 
Canarygrass—see Phalaris 
Cantaloupe—see Cucumis 
Capsella bursa-pastoris 
(Shepherdspurse) 
Aphis armoraciae 
Aphis bakeri 
Aphis fabae 
Aphis gossypii 
Aphis helichrysi 
Aphis medicaginis 
Myzus persicae 
Rhopalosiphum 
pseudobrassicae 
Cardoon—see Cynara 
Carduus—see Cirsium 
Carex sp. (Sedge) 
Iziphya flabella 
Myzus timpanogos 
Carex nebraskensis 
(Nebraska sedge) 
Thripsaphis ballit 
Thripsaphis producta 
Thripsaphis verrucosa 
Toxoptera viridi-rubra 
Carnation—see Dianthus 
Carrot—see Daucus 
Carum petroselinum 
(Parsley) 
Cavariella aegopodii 
Carya sp. (Hickory) 
Monellia caryae 
Castilleja sp. (Paintedcup) 
Aphis bakeri 
Aphis chipetae 
Kakimia alpina 
Macrosiphum solanifolii 
Castilleja rhexifolia 
(Splitleaf Paintedcup) 
Aphis kachena 
Catabrosa aquatica 
(Brookgrass) 
Aspidaphis aquatica 
Catalpa sp. (Catalpa) 
Aphis gossypii . 
Catnip—see Nepeta 
Cattails—see Typha 
Cauliflower—see Brassica 
Ceanothus velutinus 
(Snowbrush Ceanothus) 
Aphis ceanothi 
Celery—see Apium 
Ceratophyllum sp. 
(Hornwort) 
Rhopalosiphum nymphaeae 
Cercocarpus montanus (True 
Mountainmahogany) 
Aphis cercocarpt 
Chenopodium album (Lambs- 
quarters Goosefoot) 
Aphis medicaginis 
Hyalopterus atriplicis 
Macrosiphum solanfolii 
Myzus persicae 
Pemphigus balsamiferae (?) 
Pemphigus bursarius 
Cherry—see Prunus cerasus 
Cherry, sand—see Prunus 
besseyi 
Chickweed—see Stellaria 
Aphis armoraciae 
Chokecherry—see Prunus 
virginiana 
Chrysanthemum sp. 
Aphis helichrysi 
Macrosiphum sanborni 
Myzus persicae 
Rhopalosiphum rufomaculatum 
Chrysothamnus sp. (Rabbit 
brush) 
Aphis gregalis 
Aphis zonassa 
Chrysothamnus greenei 
(Greenes Rabbitbrush) 
Capitophorus xerozoous 
Chrysothamnus nauseosus 
subsp. graveolens (Green- 
plume Rabbitbrush) 
Aphis chrysothamnicola 
Aphis ornata 
Capitophorus oestlundi 
Capitophorus packi 
Capitophorus wasatchii 
Macrosiphum erigeronensis 
Chrysothamnus nauseosus 
subsp. nauseosus (Rubber 
Rabbitbrush) 
Aphis chrysothamnicola 
Aphis crypta 
Aphis chrysothamni 
Aphis filifoliae 
Aphis gregalis 
Aphis hermistonii 
Aphis nigragregalis 
Aspidaphis adjuvans rowei 
Capitophorus elongatus 
Capitophorus feragaeus 
Capitophorus gregarius 
Capitophorus oestlundi 
Capitophorus sporadicus 
Capitophorus xerozoous 
Durocapillata utahensis 
Macrosiphum aaroni 
Macrosiphum ambrosiae 
Chrysothamnus nauseosus 
subsp. typicus 
