There was no consensus to move to langoustine, which was indeed a very bad idea. The proponent of that move explicitly approved a move to the scientific name, and it also seems the best title to me. I was therefore bold enough to go ahead and make that move. Do you have any reason to believe it is not the best title? "Norway lobster" is the most authoritative "common name" for the species, and there were doubts in some quarters as to whether it was good enough. In such circumstances, the scientific name really is the only alternative.