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How to Manage Pests

Identification: Key to Aphids Commonly Found in San Joaquin Valley Alfalfa and Cotton

Start key

From "body is pale green, pink, or white"

Click on the illustration or description that best describes the aphid.

spotted dorsal abdomen
 
dorsal abdomen without spots
Six to eight rows of spots on dorsal abdomen   Dorsal abdomen is without spots
Where is the abdomen?

Statewide IPM Program, Agriculture and Natural Resources, University of California
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