420 
Lactuca sativa (Garden 
Lettuce) 
Aphis fabae 
Macrosiphum barri 
Lactuca spicata (Blue 
Lettuce) 
Myzus persicae 
Lambsquarters Goosefoot 
—see Chenopodium 
Lappula sp. (Stickseed) 
Aphis helichrysi 
Lapsana communis 
(Nipple-wort) 
Pemphigus bursarius 
Larkspur—see Delphinium 
Lathyrus odoratus 
(Sweetpea) 
Macrosiphum pisi 
Leersia oryzoides (Rice 
Cutgrass) 
Colopha ulmicola 
Rhopalosiphum nymphaeae 
Leonurus cardiaca 
(Motherwort) 
Capitophorus ribis 
Myzus solani 
Lepidium sp. (Pepperweed) 
Aphis medicaginis 
Myzus persicae 
Lettuce—see Lactuca 
Leucocrinum montanum 
(Common Starlily) 
Myzus leucocrini 
Liatris punctata (Dotted 
Gay feather) 
Aphis laciniariae 
Capitophorus wasatchii 
Licorice—see Glycyrrhiza 
Ligusticum sp. (Ligusticum) 
Macrosiphum martini 
Ligusticum porteri (Porter 
Ligusticum) 
Cavariella aegopodii 
Lilium sp. (Lily) 
Myzus circumflexus 
Myzus solani 
Myzus persicae 
Lilium candidum (Madonna 
Lily) 
Myzus circumflexus 
Myzus persicae 
Lily—see Lilium 
Lily, Pond—see Nuphar 
Linum sp. (Flax) 
Macrosiphum granarium 
Loco—see Astragalus 
Locust—see Rohinia 
Lonicera sp. (Honeysuckle) 
Amphicercidus flocculosus 
Rhopalosiphum conii 
Lonicera involucrata 
(Béearberry Honeysuckle) 
Amphorophora crystleae 
APHIDS OF THE ROCKY MOUNTAIN REGION 
Prociphilus.xylostei 
Rhopalosiphum grabhami 
Lonicera utahensis (Utah 
Honeysuckle) 
Rhopalosiphum grabhami 
Lousewort—see Pedicularis 
Lupinus sp. (Lupine) 
Macrosiphum albifrons 
Macrosiphum zionensis 
Myzus persicae 
Lupinus decumbens (Silvery 
Lupine) 
Aphis lupini 
Lycopersicon esculentum 
(Common Tomato) 
Myzus persicae 
Myzus solani 
Madonna Lily—see Lilium 
Maize—see Zea mays 
Mallow—see Malva 
Mallow, Rose—see Hibiscus 
Malus sp. (Apple) 
Aphis bakeri 
Aphis helichrysi 
Aphis medicaginis 
Aphis pomi 
Aphis rosea 
Eriosoma lanigerum 
Rhopalosiphum fitchii 
Malva neglecta (Malva or 
Mallow) 
Aphis helichrysi 
Aphis medicaginis 
Macrosiphum solanifolii 
Myzus persicae 
Mannagrass—see Glyceria 
Maple—see Acer 
Mathiola sp. (Stock) 
Rhopalosiphum 
pseudobrassicae 
Meadowrue—see Thalictrum 
Medicago sativa (Alfalfa) 
Aphis bakeri 
Aphis medicaginis 
Macrosiphum creelii 
Macrosiphum pisi 
Melica bulbosa (Oniongrass) 
Forda formicaria 
Melilotus sp. (Sweetclover) 
Aphis bakeri 
Aphis medicaginis 
Macrosiphum pisi 
Melilotus alba (White 
Sweetclover) 
Aphis medicaginis 
Melilotus officinalis (Yellow 
Sweetclover) 
Aphis medicaginis 
Melon—see Cucumis 
Mentha sp. (Mint) 
Aphis menthae-radicis 
Phorodon menthae 
Mentha canadensis (Canada 
Mint) 
Aphis menthae-radicis 
Mentzelia sp. (Mentzelia) 
Capitophorus wasatchit 
Macrosiphum mentzeliae 
Mertensia sp. (Bluebell) 
Aphis helichrysi 
Macrosiphum mertensiae 
Macrosiphum niwanistum 
Milkweed—see Asclepias 
Milkvetch—see Astragalus 
Millet—see Setaria 
Mimulus floribundus 
(Monkeyflower) 
Rhopalosiphum nymphaeae 
Mint—see Mentha 
Mirabilis sp, (Four-o’clock) 
Aphis medicaginis 
Mirabilis linearis (Narrow- 
leaved Four-o’clock) 
Aphis helianthi 
Mirabilis nyctagina (Heart- 
leaved Four-o’clock) 
Aphis helianthi 
Mockcucumber, Wild—see 
Echinocystis 
Monarda sp. (Beebalm) 
Aphis monardae 
Myzus monardae 
Monarda fistulosa 
(Wildbergamot Beebalm) 
Myzus monardae 
Monkeyflower—see Mimulus 
Monkshood—see Aconitum 
Morning-glory—see Ipomoea 
Motherwort—see Leonurus 
Mountainash—see Sorbus 
Mountainmahogany—see 
Cercocarpus 
Muskmelon—see Cucumis 
melo 
Mustard—see Descurainia 
Nasturtium—see Tropaeolum 
Needlegrass—see Stipa 
Nepeta cataria (Catnip) 
Aphis frangulae 
Nettle—see Urtica 
Nicotiana tabacum (Common 
Tobacco) 
Myzus persicae 
Ninebark—see Physocarpus 
Nipplewort—see Lapsana 
Nuphar polysepalum (Rocky 
Mountain Cowlily) 
Rhopalosiphum nymphaeae 
Oak—see Quercus 
Oat—see Avena 
Oenothera caespitosa 
(Tufted Eveningprimrose) 
Aphis oenotherae 
Oenothera strigosa (Common 
Evening Primrose) 
