American blight

noun

See under woolly aphid(def 1).

Origin of American blight

First recorded in 1805–15

Definition for american blight (2 of 2)

woolly aphid

noun

any plant louse of the family Aphididae, characterized by a waxy secretion that appears like a jumbled mass of fine, curly, white cottony or woolly threads, as Eriosoma lanigerum (woolly apple aphid or American blight) and Prociphilus tessellatus (woolly alder aphid).
any of various aphids that produce white waxy threads, as Adelges piceae (balsam woolly aphid).

Origin of woolly aphid

First recorded in 1835–45