Philipp Ernst, Schwalbenschwanz, Deckfarbe auf Karton, 10 x 13 cm, unsigniert
Date before 1942
Source Bild in Privatbesitz. Foto: Volker Simons 2014-03-28 14:52:21
Author Philipp Ernst (1862–1942)
Source: https://commons.wikimedia.org/wiki/File:Ph_Ernst_(200).JPG

The Old World swallowtail (Papilio machaon) is a butterfly of the family Papilionidae. The butterfly is also known as the common yellow swallowtail or simply the swallowtail (a common name applied to all members of the family, but this species is the 'original', first to go by the name). It is the type species of the genus Papilio.