Where has EHB been found?
The first Western Australian discovery of EHB - a single female emerging from a 200mm x 240mm beam in a house in the Perth suburb of Parkerville - was made on 19 January 2004.
In the first phase of the subsequent EHB Response Program, EHB was found on 27 properties across 10 outer Perth suburbs.
As of September 2010, EHB has been confirmed at 178 sites across 50 suburbs. This includes 11 plantations and 167 urban sites. EHB infestations have been confined to the greater Perth Metropolitan area, except for one confirmed find in Albany.
Of the confirmed sites:
- 164 were in dead, dry pine in the environment, such as logs, branch stubs, stumps and dead wood inclusions.
- 2 were in furniture.
- 6 were in structural and milled timber (2 of these in houses – Albany and Brigadoon).
- 6 were in trap poles (pinewood logs placed to measure existing population densities, and later for verification of eradication from target areas)
Maps of EHB affected areas (Restricted Movement Zones) and a table of all suburbs affected by EHB are available.
As noted above, infestations have been found mainly in the dead sections of live pine trees, and in pine tree waste material. However, as of September 2010, there has been one confirmed structural find of EHB in a home that is the result of EHB migrating from nearby infested pine trees. This occurred in a house in Brigadoon.
EHB has also been detected in house beams in Parkerville and Beechina, where infestation of the structural timber occurred prior to the timber being installed.
In Albany, EHB was found in untreated pinewood timbers stored inside a shed, which had also been used in the construction of the adjacent home. It was discovered that these pinewood timbers had been transported from an infested timber yard in Perth.