Abstract
There are 32 species of aphids (comprising 15 genera), 6 of psyllids (comprising 5 genera) and 8 of whiteflies (comprising 6 genera) listed along with hosts on which, where and when they were collected in Arizona from 1953 to 1958. Occasional notes and comments are included as to their habits and abundance and as to other observations, such as parasitization. The aphid records indicate that Myzus persicae (green peach aphid) was the most polyphagous species of the aphids.

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