Possibly Epiphyllum oxypetalum (Queen of the Night) which is an old pass-along type epiphytic cacti houseplant. Have you ever seen it bloom? Does it bloom at night?

Contact a Natuzzi dealer and they can probably help. In my experience even the cheapest Natuzzi is leather anywhere your body touches so maybe if it was a cheap sofa the back if all one piece will be vinyl for sure .

It doesn't matter. You will get the look with literally any pure white solid surface, and yes, even Corian! What is the rest of your bath, all the materials? The original pic was an Instagram, ( slightly less blurry below ) not Pinterest. Put all your materials together, and it isn't the bench or the curb top driving your love of the inspiration pic.: ) - it might be a hazy photo?

Are the backgrounds of these photos natural fibers and human skin? Do the beetles show an affinity for these surfaces? Dermestid beetles would be a possibility in that case. Note that it is the thorax of your beetles, not the head, that is the lighter color. The head and antennae are not visible in the images. Try for better pictures. Dermestid beetles are an indoor pest.