Akademik

secretes a waxy substance like a mass of fine curly white cotton or woolly threads

: any of several plant lice of the genus Eriosoma that are covered with a dense coat of white filaments somewhat resembling fine wool or cotton; especially : woolly apple aphid — called also woolly plant louse

1. 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).

2. any of various aphids that produce white waxy threads, as Adelges piceae (balsam woolly aphid).

[1835-45]