Woolly Aphid

Description:

From Wiki: The woolly aphid (subfamily: Eriosomatinae) is a sucking insect that lives on plant fluids and produces a filamentous waxy white covering which resembles cotton or wool. The adults are winged and move to new locations where they lay egg masses. The larvae often form large cottony masses on twigs, for protection from predators. They come from Japan.

Notes:

Now I know what that white stuff on tree branches is!! Had to use the cellphone for this one....maybe I can catch one when I have my real camera!!!