I have a crab apple tree that is infested with some kind of insect, I think, and I was wondering if you could help me identify it and give me some ideas on how to treat it.  I don't think it is aphids but whatever it is excretes something similar to honeydew.  It is very sticky and it is everywhere under the tree.

I have attached a couple of pictures.  The closeup picture shows little white fluffy balls and when broken open they are red inside.

Thank you in advance.
Steve Hill