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Would you like to add information to this article? Interested in writing or submitting an article? Have a question about this article? Ambrosia Beetles Versus Powderpost Beetles 
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Forum Responses
From the original questioner: Thanks Gene. Maybe they are not PPB, but the holes look like pictures I have seen of PPB and there were small piles of sawdust in the stickered lumber. I have never seen what I thought could be the culprit - only their sign. Any ideas as to what the bug could be, based on the sign they leave behind? From Professor Gene Wengert, forum technical advisor: Is there a dark ring around some of the holes? What is the hole diameter? For positive ID, take samples of the wood to your county extension office. From contributor J: I also have that in my Monterey pine - little pin holes, and the buggers that leave them are little beetles. Thought they were lyctid, but I could be wrong, again. I have to make a heat chamber to cook the buggers or my wood floor will not be suitable to put in the house. I will see if the extension folks can identify it. From Professor Gene Wengert, forum technical advisor: It sounds like ambrosia beetles. From the original questioner: Some of the holes have a dark ring around them and some do not. I assumed the ones without the ring were new and the others were old. I'll see if I can find any info on the ambrosia beetle. Are they as bad as powderpost? From Professor Gene Wengert, forum technical advisor: Ambrosia beetles have the dark ring oftentimes. They do not like dry wood at all, so they are not as bad as PPB. Nevertheless, they can do severe damage to wetter wood. Control them by eliminating wood trash from the drying yard and by drying the wood. They may have 3 cycles per year, so removing trash wood removes their preferred breeding material. Note that some trees will get a bark beetle and even ambrosia beetles while standing if they are dead trees. Again, not a continuing problem if the wood is dry. Have you reviewed the related Knowledge Base areas below? 
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