New parquet has small holes - parquet beetles? Parquet in new building

Have the manufacturers and publishers seen the photos? What do they say about it? I would get these statements first. Is that completely normal and does it happen, or was it actually a bug after all? How many of the bugs have you found? How much area is affected by the holes in total?

Are the floorboards glued to the screed?

Have the manufacturers and publishers seen the photos? What do they say about it? I would first get these statements now. Is that completely normal and does it happen, or was it actually a beetle? How many of these beetles did you find? How much area in total is affected by the holes?

I think only the publisher has seen the photos. The manufacturer says it can't be possible that there are live beetles or larvae inside, because the wood is supposedly heat-treated and/or impregnated and then packaged (sealed). The publisher said that reclaimed wood is used for this, so probably nothing can happen because of that. No idea how to interpret that.

Today we checked further areas and found a few more holes... in total maybe four to five more planks affected, with a total of maybe ten to twenty holes. Sometimes three in one plank, sometimes ten. But again, as with the first finding, clearly limited to a single plank, even though some holes are right at the edge area.
In terms of area, very "little" is affected. It is always only areas of planks. For a parquet area of about 90-95 sqm, we have so far checked about 75-80 sqm and found affected spots of maybe 1 sqm. We can't check the areas under the kitchen (about 5 sqm).

Are the planks glued to the screed?

Yes, the parquet is fully glued because we have underfloor heating.

Was the found beetle still alive and are there more of them.

If not, they could have died in the heat chamber.

If it was still alive and there are several, more holes will probably appear in the coming years.

He was still alive but was identified in another forum as "Cossonus". So he is probably not a furniture beetle.

... In the case of full bonding, it is most likely that the beetles or the holes were eaten _before_ bonding, as it is unlikely that they can move within the bonding. I would try to remove a board and see if the holes go all the way through. Also document whether there is wood dust or not. "Through" and "without dust" are indications that it was there beforehand. However, I find the beetle discovery with you confusing, but it could also just be a coincidence. Good luck!