Opinion 491 Interpretation under the Plenary Powers of the nominal species Palaeopsylla daea Dampf, 1910 (class Insecta, order Siphonaptera) for the purpose of validating accustomed usage
Published in Opinions and declarations rendered by the International Commission on Zoological Nomenclature, in 1957, in volume 17, issue 13, pages 197-208
Date published:1957-11-15