Insect and Spider Identification: CLOSED: Found on Live Oaks, 1 by turbosbabe96

turbosbabe96 wrote:
My husband was trimming some dead limbs for a neighbor friend and came across these "balls" on her Live Oak Trees..on every single tree he came upon either a few or a lot. He broke one open..Well, see the next several pictures and if anyone can, please tell me what this is!! Is it harmful? I figure it is since her trees are really looking sad. What can be done to get rid of this pest? In one pic is the larva that was inside of one..He broke open 3 or 4 altogether and the bug(s)were in them all. Thanks for your help!

Randa

p.s. If it is harmful, how fast can this spread? And should we treat our trees in advance??