Well, I presume most insects are a threat. I've been unable to identify this little beast, hopefully someone here can tell me how nasty it will be. I am seeing them only on my small Waterfall maple so far, but will be doing a thorough inspection of all of my trees later today. What can I do to remove them, and at this early growth stage will it be safe to treat it at all? I've sent these photos to a good friend (Eastwood Nurseries), but thought more opinions may be warranted. Thanks in advance.