Mar 2013
Insect Pests of Desert-Grown Alfalfa: Alfalfa Aphid Complex
Authors:
Lydia Brown, Ayman Mostafa, Al Fournier, and Peter Ellsworth
In Arizona alfalfa, pea aphid (Acyrthosiphon pisum), blue alfalfa aphid (Acyrthosiphon kondoi), spotted alfalfa aphid (Therioaphis maculata), and cowpea aphid (Aphis craccivora) make up a winter aphid complex. All species cause similar damage, but spotted alfalfa aphid and blue alfalfa aphids are the most damaging in our system.