The Balsam Woolly Adelgid (Aphid)
The balsam woolly adelgid (Adelges piceae) (BWA), previously called the balsam woolly aphid, is a tiny, soft bodied insect which appears as white, woolly spots on Fraser fir.
The link address is: http://www.ces.ncsu.edu/nreos/forest/xmas/CTN020.html
