Hemming (1967) stated:-
The bibliographical references and localities cited by Linnaeus for the nominal species Papilio podalirius showed clearly that he had confused together under this name two distinct taxa, one occurring in central and southern Europe, exclusive of Spain ; the other in Spain and for a long stretch of the African Mediterranean littoral ; it was to the first of these taxa that the specific name podalirius has always been applied while the second, which was not distinguished until 1832, was equally well known by the specific name fieisthamelii (Papilio feisthamelii Duponchel, 1832, in Godart, Hist. nat. Lepid. Fr., Suppl. 1 (Diurnes) : 7, pl. 1, fig. 1 - female). In 1913 (J. linn. Soc. Lond., Zool. 32 : 174-175) Verity drew attention to the fact that the sole syntype of Papilio podalirius preserved in the Linnaean collection in London was a female, not of the European species always known as podalirius but of the North African species Papilio feisthamelii and suggested that the name podalirius should be transferred to the species known as feisthamelii. The adoption of this course would have had a most disturbing effect on accepted nomenclature and would have been extremely confusing. Verity's paper was accordingly deliberately ignored by systematists, who continued to use the specific names podalirius and feisthamelii in the hitherto accepted sense. It was apparent however that at some suitable time it would be necessary to ask the Commission to regularize the situation in some suitable way. In 1945 an application on this case was submitted to the Commission in this sense by the late Steven Corbet. The general purpose of this application was approved by the Commission which decided that the best course would be to use its Plenary Powers to designate as the lectotype of this nominal species one of the specimens described in one of the works on European butterflies for which bibliographical references were cited by Linnaeus in the original description of Papilio podalirius. The specimen selected by the Commission was that described by Ray in 1710 (Hist. Ins. : III, no. 3), which Ray stated had been taken near the port of Livorno in Tuscany ; at the same time the Commission designated the above locality to be the "Restricted Locality" for this nominal species. The effect of these decisions was definitely to confirm the specific name podalirius as the name for the European taxon habitually so known, and to leave the name feisthamelii as the valid name for the Spanish & North African taxon. This decision was promulgated in the Commission's Opinion 263, which was published in 1954 (Opin. int. Comm. zool. Nom. 5 : 329-342). In the same Opinion the specific names podalirius Linnaeus, 1758, and feisthamelii Duponchel, 1832 (both published in combination with the generic name Papilio), were placed on the Official List of Specific Names in Zoology as Names No. 77 and No. 78 respectively.
The higher classification used here follows Lamas (2008).
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