I am no landscaper or entomologist, but I pulled apart an old garage (1920s-1930s) and discovered parasites had burrowed into the cedar planks of the garage, as well as the regular pine wood planks which were totally chewed up. The city declared I must take the garage down, which is why I was pulling it apart in the first place.

The parasites are no where to be found, but the boards have cavities much like carpenter ants in nature running along the grain of the wood.

I disposed of all the boards, but one small example for examination, to be safe.

The property was in Michigan.

I don't believe it was chemically treated in anyway. I have a sample of the wood.

A house down the street appeared to be in the process of being fumigated, and I was told as such.

I didn't see any mud tubes, but that doesn't mean they weren't there among the destruction.

There are three here and as you can see they hid from the open sides of the wood and burrowed on dark-sides hidden under nailed beams and the siding.

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Any ideas what it could be?

  • 1
    I'll repeat what I said on Gardening & Landscaping: your location and photographs of the damage will be helpful. – Niall C. Sep 8 '15 at 16:09
  • Down voting because there's no way to answer definitively with the provided information. Also the damage could have been done before any of us were even born, it's just not relevant. – Steven Sep 8 '15 at 18:15
  • I did the safe thing already and removed all the material, I just want to know what pest did this to the cedar. – user2730049 Sep 9 '15 at 14:11

Where do you live? Sounds a bit like Formosan Termites to me. Were there mud tubes in the wood? Probably been chemically treated by the last owner, so they're all dead now, but the damage has already been done.

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