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How to Manage Pests

Identification: Key to Aphids Commonly Found in Small Grains, Corn, and Sorghum in California

From "supracaudal process is absent"

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

Illustration of elongated or rounded cauda   Illustration of knobbed cauda
Cauda is elongated or rounded   Cauda is knobbed
Where is the cauda?

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