174 Wisconsin Academy of Sciences^ Arts, and Letters. 
vagans, Schizoneura Koch, 1857. Die Pflanzenlause Aphiden, p. 
268, fig. 
Prunus sp.f 
Valerianae, Aphis Cowen, 1895. Hemiptera of Colorado., p. 121. 
Valeriana edulis. 
valerianiae, Maerosiphum CClarke), 1903. Can. Ent., XXXV, p. 
253. N ectarophora. 
Valeriana officinalis. 
valerianina, Aphis Del Guercio, 1911. Redia, VII, p. 322. 
Valeriana sp. 
vallda, Aphis Walker, 1852. List Homop. Insects Brit. Museum, 
part 4, p. 1033. 
No food plant given. 
variabilis, Microparsus Patch, 1909. Ent. News, XX, p. 338, fig. 
Desmodium canadense, D. canescens, D. marylandicum. 
varians, Aphis Patch, 1914. Me. Agr. Exp. Sta. Bui. No. 225, p. 
56. 
Rides sp. 
varians, Myzus Davidson, 1912. Jour. Econ. Ent. V, p. 409, fig. 
Clematis ligusticifolia. 
variegata, Toxoptera Del Guercio, 1909. Rivista di Pat. Veget. 
IV, p. 8. 
Rhamnus alaternus. 
varsoviensis, Pemphigus Mordwilko, 1895. Rah. Lab. Zool. Kab. 
Varch. Univ., p. 183. 
Populus sp. 
vasculosa. Phylloxera Pergande, as a var. of P. symmetrica Per- 
gande, which see. 
vastator, Rhopalosiphum (Smee), 1846. The Potato Plant, p. 63, 
fig. (Buckton). Aphis. 
Solanum tuberosum. 
vastatrlx,-Phylloxera Planchon, 1868. Compt. Rend. Acad. Sci., 
Paris, LXXIV, p, 588, Sept. 14. 
Vitis vinifera. 
