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Aphis middletonii

is a common root-feeding, polyphagous aphid.

Common names. Erigeron root aphid, Corn root aphid, Aster root aphid.

Distribution. This aphid is known worldwide and is common especially in the temperate regions of western and central United States and Canada, but is not common in Europe and Asia.

Host associations. It has a fairly broad host range, having been recorded from species of at least 11 plant families.

Economic importance. It is particularly important on corn (Poaceae), sunflower, Chrysanthemum, and artichoke (Asteraceae), celery (Apiaceae), potato (Solanaceae), and beets (Chenopodiaceae), but also attacks plants of other plant families including, Cactaceae, Ranunculaceae, Amaranthaceae, and Amaryllidaceae. It has not been implicated in the transmission of any plant virus.

See also. Taxonomy at Aphid Species File. Aphids on the World's Plants. Literature references.


Blackman, R.L. and V.F. Eastop. 2006. Aphids on the World’s Herbaceous Plants and Shrubs. Volume 2 The Aphids. John Wiley & Sons with the Natural History Museum, London. viii + pages 1025-1439.

Voegtlin, D., W. Villalobos, M.V. Sanchez, G.Saborio, and C. Rivera. A Guide to the Winged Aphids of Costa Rica. 2003. International Journal of Tropical Biology and Conservation 51(Suppl. 2):xi + 228 pp.