72 Wisconsin Academy of Sciences, ArtSj and Letters. 
eragrostidis, Colopha Middleton, 1877. Ill. State Lab. Nat. Hist., 
Bui. 2, p. 17. 
Anthoxanthum odoratum, Eragrostis frankii, E. megastacfiya, E. 
minor, E. pilosa, Panicum sp. 
eragrostidis, Tychea Passerini, 1860. Gli Afidi, p. 39. 
Eragrostis megastachya, Poa annua, Setaria glauca, S. viridis, 
Triticum vulgare. 
erecta, Aphis Del Guercio, 1911. Redia, VII, p. 314, fig. 
Oalium erectum. 
ericae, Aphis Walker, 1852. List Homop. Insects Brit. Museum, 
part 4, p. 1038. 
No food plant given. 
erigeron-canadense, Aphis Rafinesque, 1818. Amer. Mon. Mag. & 
Critic. Rev., Ill, p. 17. 
Erigeron canadensis. 
erigeronensis, Macrosiphum (Thomas), 1877, Ill. State Lab. Nat. 
Hist., Bui. 2, p. 7. Siphonophora. 
Ambrosia trifida, Beta vulgaris, Erigeron canadensis, Lactuca 
pulchella, L. scariola. 
erigeronensis, Tychea Thomas, 1879. Eighth Rept. State Ent. Ill., 
Vol. 5, p. 168. 
Erigeron canadensis, Cichorium intybus, EcMnochloa crus-gaUi, 
Poa pratensis, Zea mays. 
erigeron-philadelphicum, Aphis Rafinesque, 1817. Amer. Mon. 
Mag. & Critic. Rev., I, p. 361. 
Erigeron pMladelpMcus. 
erigeron-strigosum, Aphis Rafinesque 1818. Amer. Mon. Mag. & 
Crit. Rev., Ill, p. 17. 
Erigeron ramosus. 
eriobotryae, Aphis Schouteden, 19 05. Broteria, IV, p. 164. 
Eriobotyra japonica. 
eriogoni, Aphis Cowen, 1895. Hemiptera of Colo., p. 119. 
Eriogonum umbellatum, Eriogonum alatum, Erigeron acris. 
eriophori, Hyalopterus (Walker), 1848. Anns. Mag. Nat. Hist, 
ser. 2, II, p. 46. Aphis. 
EriopJiorum vaginatum. 
