OK, I think the word in English would be termite. I would not worry about termites or any other insects on a wooden tripod. No insect will bother dry wood. So the only way it might be a problem would be if you buried the tripod in damp earth for a year or so.
I cannot help you with the comparison but I have read that wood removes vibrations the best with carbon fiber second and then metal. Carbon fiber is much lighter than the wood though.
I have read good comments on the wood tripods except that they are very heavy.