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ARS Home Office of Communications Images Photos Jan14





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Image Number D3051-2 An adult hoverfly on an alyssum flowerhead. Hoverflies are a natural enemy of aphids that can infest lettuce, and the flies are attracted to fields by alyssum interplanted with the lettuce.  Photo by Stephen Ausmus.  640 pixels wide: (d3051-2.jpg)   Please visit our Image Gallery


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