lettuce aphid (Nasonovia ribisnigri) in Pests not Known to Occur in North America

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Winged adult on Lettuce.

Whitney Cranshaw, Colorado State University, Bugwood.org

Winged adult on Lettuce.

Wingless adult on lettuce.

Whitney Cranshaw, Colorado State University, Bugwood.org

Wingless adult on lettuce.

Small colony with mixed stages.

Whitney Cranshaw, Colorado State University, Bugwood.org

Small colony with mixed stages.

Apterous female

Whitney Cranshaw, Colorado State University, Bugwood.org

Apterous female

alate

Pest and Diseases Image Library , Bugwood.org

alate

lettuce aphid (<em>Nasonovia ribisnigri</em>) adult(s) on (<em> </em>)

Pest and Diseases Image Library , Bugwood.org

lettuce aphid (Nasonovia ribisnigri) adult(s) on ( )

lettuce aphid (<em>Nasonovia ribisnigri</em>) adult(s) on (<em> </em>)

Pest and Diseases Image Library , Bugwood.org

lettuce aphid (Nasonovia ribisnigri) adult(s) on ( )

Female vivipara. Habitus.

Brendan Wray, Bugwood.org

Female vivipara. Habitus.