Hello I have a simple question about some pest that's inhabiting my crassula pagoda's leaves. Attached is a picture. The local plant guru told me they are mealy bugs but I just wanted a second opinion. I noticed small cob webs on my plant but didn't think anything of them until white chalk like growths started appearing on the new foliage at the top of the plant. What are these guys? How do I treat the plant to remove them? Sorry but these pictures are about as good as I can do with my phone's camera for up close.