Key Takeaway
Finding that Norfolk butterfly has been distinct subspecies for 200,000 years could transform conservation approachThe endangered swallowtail butterfly Papilio machaon britannicus, which is only regularly found breeding in Britain on the Norfolk Broads, has been a distinct subspecies for at least 200,000 years, according to a study. Smaller, darker in colour and much rarer than the continental swallowtail, britannicus was…
Published July 5, 2026 · Category: News
Overview
Finding that Norfolk butterfly has been distinct subspecies for 200,000 years could transform conservation approach
The endangered swallowtail butterfly Papilio machaon britannicus, which is only regularly found breeding in Britain on the Norfolk Broads, has been a distinct subspecies for at least 200,000 years, according to a study.
Details
Smaller, darker in colour and much rarer than the continental swallowtail, britannicus was previously considered to have developed its distinctive form during its confinement in the wetlands of eastern England over the last 8,000 years, after the flooding of Doggerland.
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Source
Originally published at www.theguardian.com.
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Frequently Asked Questions
What is "British swallowtail split from European cousins much earlier than thought, study finds" about?+
Finding that Norfolk butterfly has been distinct subspecies for 200,000 years could transform conservation approachThe endangered swallowtail butterfly Papilio machaon britannicus, which is only regularly found breeding in Britain on the Norfolk Broads, has been a distinct subspecies for at least 200,000 years, according to a study.Smaller, darker in colour and much rarer than the continental swallowtail, britannicus was previously considered to have developed its distinctive form during its con
Who reported this story?+
This story was reported by The Guardian World.