WiUon-Vickery—List of Aphidddae. 
179 
viticls, Aphis Ferrari, 1872. Ann. Mus. Civ. Stor. Nat. Genova, II, 
p. 67. 
Vitex agnus-casti. 
viticola, Aphis (Thomas), 1877. Ill. State Lab. Nat. Hist., Bui. 2, 
p. 5. Siphonophora. 
Vitis vinifera, Y. vulpina. 
vitifoliae, Phylloxera (Pitch), 1855 First Kept. Nox. & Ben. In¬ 
sects N. Y., p. 158. Pemphigus. 
Vitis cordifolia, V. vinifera, V. vulpina, 
vitis, Aphis Scopoli, 1763. Entomologia Carniolica, p. 137. 
Vitis vinifera, V. vulpina. 
vitisana, Peritymhia Westwood, 1869. Gardners Chronicle, p. 109. 
Vitis vinifera. 
vulgaris, Rhopaloslphum (Kyber), 1815. Germars Mag. Ent. I, 
p. 9. Aphis. 
Food plant? 
vulpiae. Aphis Del Guercio, 1913. Redia, IX, p. 207, fig. 
Vulpa sp. 
walshii, Myzocallis (Monell), 1879. Bui. U. S. Geol. & Geog. 
Surv. Terr. V, No. 1, p. 29. Callipterus. 
Quercus ruhra. 
walshll, ,Pemphigus Williams, 1911’. Aphididae of Nebraska, p. 
15. 
XJlmus americana. 
whltei, Myzus Theobald, 1912. Jour. Econ. Biol. VII, p. 110, fig. 
Ri1)es sp. 
willcocksi, Anoecia Theobald, 1915. Bui. Ent. Research, VI, p. 
141, fig. 
Poa sp. 
xanthelis. Aphis Rafinesque, 1818. Amer. Mon. Mag. & Critic. 
Rev., Ill, p. 17. 
Bolidago nemoralis. 
xanthii, Anuraphis Del Guercio, 1913. Redia, IX; p. 156, fig. 
Xanthium sp. 
