Host PLANT LIst 
Capitophorus longinectarius 
Capitophorus pullus 
Epameibaphis atricornis 
Microsiphum acophorum 
Artemisia ludoviciana sub- 
sp. typica 
Aphis oregonensis 
Capitophorus gnaphalodes 
Macrosiphum ludovicianae 
Artemisia ludoviciana 
(Louisiana Sagebrush) 
Capitophorus 
pseudoglandulosus 
Macrosiphum ludovicianae 
Microsiphum artemisiae 
Rhopalosiphum rufomaculatum 
Artemisia tridentata (Big 
Sagebrush) 
Aphis canae 
Aphis filifoliae 
Aphis hermistonii 
Aphis infrequens 
Aphis oregonensis 
Artemisaphis artemisicola 
Capitophorus bitrichus 
Capitophorus decampus 
Capitophorus heterohirsutus 
Capitophorus infrequens 
Capitophorus longipes 
Capitophorus 
pseudoglandulosus 
Capitophorus quadritrichus 
Capitophorus rusticatus 
Capitophorus spatulavillus 
Capitophorus zoomontanus 
Epameibaphis atricornis 
Epameibaphis frigidae 
Epameibaphis utahensis 
Flabellomicrosiphum 
knowltoni 
Flabellomicrosiphum 
tridentatae 
Macrosiphum albicornum 
Macrosiphum anomellum 
Macrosiphum artemisiphilum 
Macrosiphum coweni 
Macrosiphum flavilum 
Macrosiphum jonesii 
Macrosiphum zerohypsi 
Macrosiphum zerothermum 
Microsiphum acophorum 
Microsiphum artemisiae 
Microsiphum oregonensis 
Pseudoepameibaphis essigi 
Pseudoepameibaphis 
tridentatae 
Pseudoepameibaphis 
xenotrichis 
Pseudoepameibaphis zavilla 
Zyxaphis utahensis 
Artemisia tripartita 
(Threetip Sagebrush) 
Macrosiphum jonesii 
Artemisia vulgaris 
(Common Mug-wort) 
Capitophorus decampus 
Epameibaphis utahensis 
Macrosiphum artemisivulgaris 
Macrosiphum filifoliae 
Macrosiphum jonesii 
Macrosiphum ludovicianae 
Microsiphum artemisiae 
Rhopalosiphum rufomaculatum 
Artichoke, Jerusalem—see 
Helianthus tuberosus 
Ascelpias sp. (Milkweed) 
Aphis gossypii 
Aphis helianthi 
Aphis lutescens 
Macrosiphum solanifolii 
Ascelepias stenophylla 
Aphis armoraciae 
Asclepias subverticillata 
(Bedstraw Milkweed) 
Aphis lutescens 
Ash—see Fraxinus 
Ash—Mountain—see Sorbus 
Western Mountain—see 
Pyrus 
Asparagus officinalis 
(Asparagus and Asparagus 
Fern) 
Myzus circumflexus 
Myzus persicae 
Aspen—see Populus 
Aster sp. (Aster) 
Aphis armoraciae 
Aphis asterensis 
Aphis helichrysi 
Aphis maidi-radicis 
Aphis menthae-radicis 
Atarsos grindeliae 
Macrosiphum atripes 
Macrosiphum breviscriptum 
Macrosiphum erigeronensis 
Macrosiphum katonkae 
Macrosiphum tenuitarsis 
Myzus circumflexus 
Aster ericoides (Heath 
Aster) 
Aphis armoraciae 
Aphis asterensis 
Pemphigus balsamiferae 
Aster laevis (Smooth Aster) 
Macrosiphum breviscriptum 
Macrosiphum katonkae 
Macrosiphum tenuitarsis 
Aster laevis var. geyeri 
Macrosiphum breviscriptum 
Aster leucanthemifolius 
(Daisyleaf Aster) 
Atarsos grindeliae 
Macrosiphum zymozionensis 
Aster novi-belgii (New 
York Aster) 
Macrosiphum breviscriptum 
415 
Astragalus sp. (Milkvetch, 
Loco or Poisonvetch) 
Aphis medicaginis 
Macrosiphum pisi 
Atriplex sp. (Saltbush) 
Aphis tetrapteralis 
Avena sp. (Oat) 
Aphis maidis 
Forda olivacea 
Macrosiphum dirhodum 
’ Macrosiphum granarium 
Rhopalosiphum rhois 
Avena sativa (Oat) 
Forda olivacea 
Myzus persicae 
Rhopalosiphum fitchii 
Rhopalosiphum maidis 
Rhopalosiphum rhois 
* Toxoptera graminum 
Balm-of-Gilead—see 
Populus 
Barberry, European—see 
Berberis 
Barley—see Hordeum 
Barnyard grass—see 
Echinochloa 
Bean—see Phaseolus and 
Vicia 
Bearberry, red—see 
Arctostaphylos 
Beard-tongue—see 
Penstemon 
Bedbug Currant—see 
Ribes nigrum 
Bedstraw—see Galium 
Beebalm—see Monarda 
Beggars’ ticks—see Bidens 
Begonia sp. (Begonia) 
Aphis gossypii 
Berberis vulgaris (European 
barberry) 
Rhopalosiphum berberidis 
Berula erecta (Stalky 
Berula) » 
Cavariella aegopodii 
Rhopalosiphum conii 
Rhopalosiphum nymphaeae 
Beta vulgaris (Beet) 
Aphis fabae 
Myzus persicae 
Pemphigus balsamiferae 
Betula sp. (Birch) 
Calaphis betulella 
Calaphis viridipallida 
Cepegillettea betulaefoliae 
Euceraphis gillettei 
Hamamelistes spinosus 
Neosymydobius annulatus 
Betula alba (Gray Birch) 
Calaphis coloradensis 
Calaphis granovskyi 
Euceraphis betulae 
