36 Wisconsin Academij of Sciences, Arts, and Letters. 
arbuti, Aphis Ferrari, 18 73. Ann. Mus. Civ. Stor. Nat. Genova III 
p. 228. . ’ 
Arhutus unedof 
arbuti, Rhopalosiphum Davidson, 1910. Jour. Econ. Ent III p 
378. 
Arbutus menziesii. 
archangelicae, Aphis Scopoli, 1763. Entomologia Carniolica, p 
137. 
Angelica archangelica, Archangelica sp. 
archangelicae, Siphocoryne Oestlund, 1886. Aphididae of Minne¬ 
sota, p. 36. 
Angelica atropurpurea. 
^armata, Aphis Hausmann, 1802. Mag. Ins. Illiger, p. 439. 
Digilatis purpurea, papaver sp. 
armoraciae, Aphis Cowen, 18 95. Hemiptera of Colo., p. 117. 
Radicula armoracea. 
artemisiae, Aphis Passerini, 18 60. Gli Afidi, p. 35. 
Artemisia absinthium, A. campestris, A. vulgaris. 
artemisiae, Chaitophorus Gillette, 1911. Ent. News, XXII, p. 443, 
fig. 
Artemisia dracunculoides. 
artemisiae, Cryptosiphum Buckton, 1879. Mon. Brit. Aphides, II, 
p. 145, fig. 
Artemisia vulgaris. 
artemisiae, Macrosiphum (Boyer de Ponscolombe), 1841. Ann. 
Soc. Ent. Prance, X, p. 162. Aphis, 
Achillea millefolium, A. nobilis. Althaea officinalis, Artemisia 
abrotanum, A. absinthium, A. variabilis, A. vulgaris. Chrysan¬ 
themum balsamita, C. leucanthemum, Tanacetum vulgare. 
artemisiae, Macrosiphum Boyer de Ponscolombe. vai% citrinum, 
Schouteden, 1901. Ann. Soc. Ent. Belg., XLV, p. 117. 
Artemisia vulgaris. 
artemisiae, Macrosiphum (Koch), 1855. Die Pfianzenlause Aphi- 
den, p. 165, fig. Siphonophora. 
Artemisia campestris, A. vulgaris. 
