Abstract
Thirty species of aphids were confined to dodder, Cuscuta campestris Yuncker, growing on 16 host plants. About half of the aphid species lived well enough on dodder to complete a generation. Most species that lived on dodder did so even when dodder parasitized plants that those aphids could not live on by direct feeding. There were significant differences in aphid reaction to dodder growing on different host plants. Onion, Allium cepa L., made dodder unsuitable for all aphids tested. The green peach aphid, Myzus persicae (Sulzer); cowpea aphid, Aphis craccivora Koch; and potato aphid, Macrosiphum cuphorbiae (Thomas) lived especially well on dodder and injured it severely under greenhouse conditions.
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