I have six key lime trees and I notice they have white atatchments to the tops of the leaves and on the branches. It looks like eggs or larve. When I crushed this powdery white substance it made a yellow liquid. The fruit is stunted growth, the leaves and fruit are turning yellow and the upper leaves of tree are falling off. Anyone who has an idea of a treatment or can tell me what it may be, please let me know. I would really appreciate it. Thank you.