Beech Blight Aphid

A Technical Report from The Bartlett Tree Research Laboratories

Beech blight aphid (Grylloprociphilus imbricator) is a species of woolly aphid that forms dense colonies on the twigs and foliage of American beech (Fagus grandifola) trees from late spring to fall. This pest is present from Texas to Florida, and north to Canada along the East Coast. Beech blight aphid is similar in appearance to another beech-inhabiting aphid species, the woolly beech aphid (Phyllaphis fagi), which is commonly found only on European beech (Fagus sylvatica).