Parquet on underfloor heating, which type of wood is recommended?

I hardly believe that Wenge (very dark) – due to its price – will find many enthusiasts here among the potential builders

That may be true, but as with most of the other examples I mentioned, it was already mentioned above and is listed among the wood types with favorable properties, which is why I brought it up. I don't know Wenge personally at all and will quite certainly choose something significantly lighter.