bugs in willow
I've seen those pinching bugs in my willow tree. Will they kill the tree? how to get rid of them? The bark is peeling. I removed a piece and there were a bunch of those pinching bugs that bite.
This is a type of Borer Insect. They can kill a tree, especially a young tree or a stressed tree.
Trim any branches that are invested if possible and destroy.
You can control with chemical insecticides such as Imidacloprid or Permethrin.
Here is a link with more information.