Willow (Salix)-Giant willow aphid

Lachnus salignis and other species

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Pest description and crop damage Large gray to gray-black aphid often are in large numbers on twigs, branches, and trunk. Their legs generally are light brown. A prominent black tubercle is in the center of the back with slightly smaller tubercles on either side. Aphid may be a nuisance around homes when they collect on the sides of the house and crawl through window openings.

Management-biological control

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Management-chemical control

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For more information

Johnson, W.T. and H.H. Lyon (1991), Insects That Feed on Trees and Shrubs, 2nd ed., Cornell University Press (p. 310).