Picture of Beetle
Location: Orange County, Southern California, USA
April 21, 2011 8:31 am
can You Identify this Beetle, found in Southern California. In a Park in Orange County.

Eucalyptus Longhorn Borer

Dear Felipe,
We are sorry about the delay in our response, but we were on holiday.  We have started with the oldest emails that arrived in our absence and we are going to post those that we find the most interesting.  Your beetle is an imported exotic species, but luckily, it feeds on an imported exotic plant and it does not have a direct effect on our native southern California ecosystem.  This is one of two closely related species that are both known as Eucalyptus Longhorn Borers.  They are native to Australia.  They first appeared in Southern California in the early 1980s when their presence did not garner much attention because that coincided with the Med Fly eradication program.  Residents are advised against transporting eucalyptus firewood as this is known to spread the Eucalyptus Longhorn Borers to new locations.  Since the eucalyptus trees have become ubiquitous in much of the southwest, these invasive exotic beetles have a significant economic impact.  The larvae bore tunnels and galleries under the bark and if they are especially numerous, they may kill a tree.

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Location: California

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