sentences:  An author who writes "The name of the insect species with the green wings shall be named X, this is the one that the other author has named Y", does not establish a new replacement name (but a regular new name).The International Code of Zoological Nomenclature prescribes that for a new replacement name, an expressed statement must be given by the author, which means an explicit statement concerning the process of replacing the previous name.It is not necessary to employ the term "nomen novum", but something must be expressed concerning the act of substituting a name.