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United States Department of Agriculture

Agricultural Research Service

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Image Number D689-7

Lettuce aphid, Nasonovia ribisnigri. This pest (about 1-3 millimeters long) of lettuce appeared in California’s Salinas Valley in 1998 and is now found in all lettuce-production areas of that state and Arizona.

Photo by Stephen Ausmus.

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Last Modified: 8/13/2016
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