 For example, the scientific name of the red imported fire ant, "Solenopsis invicta" was published by Buren in 1972, who did not know that this species was first named "Solenopsis saevissima wagneri" by Santschi in 1916; as there were thousands of publications using the name "invicta" before anyone discovered the synonymy, the ICZN, in 2001, ruled that "invicta" would be given precedence over "wagneri".To qualify as a synonym in zoology, a name must be properly published in accordance with the rules.Manuscript names and names that were mentioned without any description ("nomina nuda") are not considered as synonyms in zoological nomenclature.