Host PLANT LIST 
Capitophorus oestlundi 
Capitophorus packi 
Capitophorus palmerae 
Capitophorus wasatchii 
Chrysothamnus parryi 
Aphis infrequens 
Aphis ornata 
Aphis zonassa 
Capitophorus elongatus 
Capitophorus oestlundi 
Capitophorus xerozoous 
Chrysothamnus viscidiflorus 
Aphis gregalis 
Aphis ornata 
Capitophorus acanthovillus 
Capitophorus elongatus 
Capitophorus gregarius 
Capitophorus magnautensis 
Capitophorus oestlundi 
Capitophorus palmerae 
Capitophorus pycnorhysus 
Durocapiillata utahensis 
Chrysothamnus viscidiflorus 
subsp. stenophyllus 
Capitophorus utensis 
Chrysothamnus 
wyomingensis 
Capitophorus xerozoous 
Cichorium sp. (Chicory) 
Aphis armoraciae 
Cicuta douglasi 
‘(Waterhemlock) 
Aphis gossypii 
Aphis heraclella 
Cavariella aegopodii 
Rhopalosiphum conii 
Rhopalosiphum nymphaeae 
Cineraria sp. (Cineraria) 
Aphis helichrysi 
Macrosiphum solanifolii 
Myzus persicae 
Myzus solani 
Cinquefoil—see Potentilla 
Cirsium sp. (Thistle) 
Aphis cardui 
Aphis helianthi 
Aphis helichrysi 
Aphis pilosicauda 
Bipersona ochrocentri 
Bipersona torticauda 
Capitophorus braggii 
Capitophorus carduinus 
_Myzus persicae 
Cirsium arvense (Canada 
Thistle) 
Capitophorus braggii 
Cirsium filipendulum 
Macrosiphum longirostris 
Citrullus vulgaris 
(Watermelon) 
Myzus persicae 
Clematis ligusticifolia 
(Western Virginsbower) 
Amphorophora brevitarsis 
Cleome serrulata (Bee 
Spiderflower) 
Aphis medicaginis 
Clover, red—see Trifolium 
pratense 
Clover, sweet—see Melilotus 
Clover, white—see Trifolium 
repens 
Cocklebur—see Xanthium 
Collomia—see Gilia 
Columbine—see Aquilegia 
Cone-flower—see Rudbeckia 
Convolvulus sp. (Bindweed 
or Glorybind) 
Myzus persicae 
Corn—see Zea mays 
Cornus stolonifera (Redosier 
Dogwood) 
Anoecia querci 
Aphis cornifoliae 
Aphis helianthi 
Aphis maculatae 
Aphis neogillettei 
Macrosiphum solanifolit 
Corydalis sp. (Corydalis) 
Kakimia tutigula 
Corylus sp. (Hazelnut or 
Filbert) 
Myzocallis coryli 
Cosmos bipinnatus (Cosmos) 
Aphis spiraecola 
Cottonwood—see Populus 
acuminata and sargenti 
Cowpea—see Vigna 
Cowslip—see Primula 
Cowparsnip—see Heracleum 
Crataegus sp. (Hawthorn) 
Amphorophora crataegi 
Aphis bakeri 
Aphis crataegifoliae 
Aphis pomi 
Eriosoma crataegi 
Prociphilus corrugatans 
Rhopalosiphum fitchii 
Crazy-weed—see Oxytropis 
Cress—see Roripa 
Crowfoot—see Ranunculus 
Cucumis melo (Muskmelon) 
Myzus persicae 
Cucumis sativus (Cucumber) 
Aphis gossypii 
Myzus persicae 
Cucurbita sp. (Gourd, 
Pumpkin, Squash) 
Aphis gossypii 
Macrosiphum solanifolii 
Cucurbita maxima (Winter 
Squash) 
Aphis fabae 
Aphis gossypii 
Myzus persicae 
Cupressus guadelupensis 
417 
(Guadelupe Cypress) 
Siphonatrophia cupressi 
Currant—see Ribes 
Cuscuta sp. (Dodder) 
Aphis armoraciae 
Aphis medicaginis 
Cutgrass—see Leersia 
Cyclamen sp. (Cyclamen) 
Myzus circumflexus 
Cydonia sp. (Quince) 
Aphis rosea 
Rhopalosiphum fitchii 
Cynara cardunculus 
(Cardoon) 
Capitophorus braggii 
Cynara scolymus (Artichoke) 
Capitophorus braggii 
Cynodon dactylon 
(Dogtoothgrass) 
Iziphya maculata 
Cyperus virens (Green 
Flatsedge) 
Aphis eriophori 
Cypress—see Cupressus 
Cystopteris montana 
(Bladderfern) 
Amphorophora ampullata 
Dahlia (Dahlia) 
Aphis fabae 
Aphis helichrysi 
Dandelion—see Taraxacum 
Daucus carota (Carrot) 
Aphis heraclella 
Aphis medicaginis 
Aphis tulipae 
Cavariella aegopodii 
Daylily—see Hemerocallis 
Pemphigus bursarius 
Rhopalosiphum conii 
Death Camass—see 
Zy gadenus 
Delphinium occidentalis 
(Duncecap Larkspur) 
Aphis rociadae 
Kakimia wahinkae 
Descurainia sp. 
(Tansymustard) 
Aphis armoraciae 
Aphis gossypii 
Aphis maidi-radicis 
Aphis medicaginis 
Desert Trumpet—see 
Eriogonum inflatum 
Dianthus caryophyllus 
(Clove Pink) 
Myzus persicae 
Digitalis purpurea 
(Common Foxglove) 
Myzus persicae 
Dill—see Anethum 
Dock—see Rumex 
Dodder—see Cuscuta 
