|We have a Red October Glory Maple tree that has a diameter of 4 inches. We have had it for just under 5 years. I don't know how old it was when we bought it. We bought three of them, but only one has damage that runs a good portion of the tree. It has "worm" holes and has lost the bark on one side of the tree. The wood is a light grey. We saw ants on it last year. Big and black, 3/8" long. We believe this will be the third summer of damage. The area of damage runs about a third of the total height of the tree. It at first looked as if there was just some spliting occurring, but as the summer went it was actually kinda hollowing out. The damage looks "sunk-in" and only on the south east side of the tree. Can you tell us what did the damage? The tree had black tips before all of the happened. We thought it was from drought and high heat. One of the other trees had only a few black tips, and the other had none. Is there anything we can do to fix the damage or prevent it from going any further? Thank you. Any help would be appreciated.