A SYNOPSIS OF THE APH1DIDAE 175 



Spruce, see Picea 

 Squash, see Cucurbita 

 Stachys (hedge nettle) 



73. Macrosiphum ludovicianae (Oestlund) 

 88. Myzus circumflexus (Buckton) 

 Stock, Ten-week, see Matthiola 

 Strawberry, see Fragaria 

 Strawberry tree, see Arbutus 

 Sugar beet, see Beta 

 Sunflower, see Helianthus 

 Sweet clover, see Melilotus 

 Sweet pea, see Latliyrus 

 Sycamore, Western, see Platanus 

 Symplwricarpos (snowberry) 



108. Aphis albipes Oestlund 

 Syringa (lilac) 



131. Aphis medicaginis Koch 

 Tacalote, see Centaurea 

 Taraxacum (dandelion) 



82. Macrosiplium taraxici (Kalt.) 

 Tarweed, see Madia and Hemizonia 

 Teasel, Fuller's, see Dipsacus 



Teasel, mustard, see Erysimum 

 Thimbleberry, see Eubus 

 Thistle, see Cirsium 

 Thistle, Milk, see Silybum 

 Thistle, Sow, see Sonchus 

 Thuja (arbor vitae) 



54. Lachnus tujafilinus (Del Guercio) 

 Tilia (linden, basswood) 



10. Eucallipterus tiliae (Linn.) 

 Tomato, see Lycopersicum 

 Tri folium (clover) 



146a. Aphis bakeri Cowen 

 131. Aphis medicaginis Koch 

 Trigonella (fenugreek) 



69. Macrosiphum pisi (Kalt.) 

 Triticum (wheat) 



111. Aphis avenae Fabr. 



64. Macrosiphum granarium (Kirby) 

 Tropaeolum (nasturtium) 



121. Aphis euonomi Fabr. 



88. Myzus circumflexus (Buckton) 

 104. Ehopalosiphum pcrsicae (Sulz.) 

 Tule, California, see Typha 

 Tulip, see Tulipa 

 Tulip tree, see Liriodendron 

 Tulipa (tulip) 



83. Macrosiphum tulipae (Monell) 

 104. Ehopalosiphum pcrsicae (Sulz.) 



Turnip, see Brassica 



