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In this Bulletin, Edith M. Patch discusses life cycle, physiology, economic impact, habitats and remedies for the Woolly Aphid of the Apple. Elm leaf aphids are also discussed to the extent that they have been seen to migrate to apple tress.
Maine Agricultural and Forest Experiment Station
Woolly Apple Aphids, Apple tree pests
Patch, Edith M.. 1913. B217: Woolly Aphid of the Apple. Maine Agricultural and Forest Experiment Station Bulletins 217.