They are nests of gypsy moth caterpillars. They can strip a tree of all of its leaves in a matter of days, killing the trees.
caterpillars hide in trees
http://www.au.gardenweb.com/forums/load/trees/msg020646082881.html
A tree with large yellow and white flowers starting with "fra" could be a Frangipani tree. Frangipani trees are known for their fragrant and colorful flowers that bloom in a variety of shades, including yellow and white. These trees are commonly found in tropical and subtropical regions.
green
yes
by eating caterpillars
no........... :)
The small white caterpillars that you will commonly see on maple trees are called Lophocampa Caryae. They will turn into a Hickory Tussock moth.
We call them champa trees, frangipani trees and in latin plumeria.
Caterpillars on trees contribute to the ecosystem by serving as a food source for birds and other animals, helping to control tree populations, and promoting biodiversity.
camouflage with the trees, leaves etc