Aphids (Homoptera: Aphididae) Colonizing Peach in the United States or with Potential for Introduction

Eleven aphid species known to colonize peaches in the United States and one species not known from the United States are described and illustrated. Aphis spiraecola Patch, Brachycaudus helichrysi (Kaltenbach), Brachycaudus persicae (Passerini), Brachycaudus schwartzi (Borner), Hyalopterus pruni (Geoffroy), Hysteroneura setariae (Thomas), Macrosiphum euphorbiae (Thomas), Myzus cerasi (F.), Myzus persicae (Sulzer), Myzus varians Davidson, Pterochloroides persicae (Cholodkovsky), and Rhopalosiphum nymphaeae (L.) are included in the present paper. A brief summary of taxonomic characters, usual hosts, and distribution within the United States are given for each species. Pictorial and dichotomous keys are included to aid personnel charged with detection, identification, and control of aphids associated with peaches in the United States.