Ok, posted here before about teak trees. I thoght I had BLUAK attacking them..I was wrong!

Today, I found more of the bigger trees dead or dying, and I found that there was a large "caterpillar" for want of a better description eating its way inside.

I will post a few pictures, and would be really grateful if anyone can tell me what it is and how to get rid of it?

The chemical I sprayed on them works, but only on contact...how do I get the bastards that are already inside the wood?

It would be greatly appreciated, as I planted these as a bit of a backup for my son's future, and I have already lost the first few hundred to floods, this lot were doing well 'til we got these buggers!

Thanks in advance!

Hope these photos come out.

You can see they are about 2- 3 inches long, they appear to get into the tree from about 1 metre or so tall, then eat everything inside until the tree dies. Any ideas?

http://books.google.com/books?id=uRZAHDoBA...3&ct=result

xyleutes ceramicus or commonly called a beehole borer.