Paul Harcourt Davies / Birthwort (Aristolochia clematitis) Umbria, Italy, June.
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Philippe Clement / Close up of European birthwort (Aristolochia clematitis) in flower, native to Europe, June
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Guy Edwardes / Southern festoon butterfly (Zerynthia polyxena) newly emerged adult, resting on Birthwort (Aristolochia clematitis) stem, near Bratsigovo, Bulgaria. May.
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Guy Edwardes / Southern festoon butterfly (Zerynthia polyxena) newly emerged adult, resting on its food plant, Birthwort (Aristolochia clematitis), near Bratsigovo, Bulgaria. May.
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Guy Edwardes / Five Southern festoon butterfly (Zerynthia polyxena) eggs laid on Birthwort (Aristolochia clematitis) leaf, near Bratsigovo, Bulgaria. May.
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Guy Edwardes / Southern festoon butterflies (Zerynthia polyxena), newly emerged adults resting on their foodplant, Birthwort (Aristolochia clematitis), near Bratsigovo, Bulgaria, May.