Question
You gave great info on what to do if the trees are living.  We cut ours eucalyptus trees down 6 months ago, and a few days ago realized they were highly infested with these beetles.  We were going to use the wood for firewood.  Is there anything we can do to get rid of these pest so we can keep the wood?

Answer
Eucalyptus logs used for firewood and dead or dying branches and trees are the primary beetle-breeding sites. Sanitation is critical for reducing beetle numbers. Until the wood dries below a critical level, it remains suitable and highly attractive to ovipositing beetles. Anything that can be done to speed the drying process, such as cutting and splitting wood, helps to reduce the length of time the wood can support beetle development. If the wood is already infested, it should be treated or destroyed. Remove the bark from felled logs or solarize the wood by placing it in a sunny location for 10 to 12 weeks and covering it with ultraviolet-resistant plastic. This prevents new beetles from attacking and resident beetles from emerging and flying to nearby living eucalyptus. Solarized wood can be stored for firewood.

Eucalyptus Longhorn Borer is spread by the movement of eucalyptus firewood infested with Eucalyptus Longhorn Borer larvae. Adult Eucalyptus Longhorn Borer are strong fliers and may fly several miles from their emergence site to find suitable egg laying locations.

Splitting the firewood logs will hasten the drying out of the wood and kill any borers in the wood.  Once the wood has dried it is not attractive to the borers and can be stored as firewood in the normal way.