Iphiclides podalirius on Vincetoxicum hirundinaria

Photo: Iphiclides podalirius on Vincetoxicum hirundinaria). View from below.
Description: Iphiclides podalirius on Vincetoxicum hirundinaria). View from below.
L Habitat: Dry site with rock faces, open areas and sparse forest. Altitude: 1130 - 1230m a.s.l.
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Butterfly
Lat.: Iphiclides podalirius
Family: Papilionidae.
Behaviour: The butterfly stayed for a long time on the blossoms of the swallow-wort and sucked nectar. In between it sailed to the next plant/inflorescence. It did not visit other plants.
Flower
Lat.: Vincetoxicum hirundinaria
Family: Asclepiadaceae
Genus: Vincetoxicum
Location: Binntal, Valais, Switzerland
Date Month/Year: 5.2020
Photographer: Simon Oberli, Hasle-Rüegsau
Number: F166346