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Queen of Spain butterfly invades Britain – but will it become native?

By · Via The Guardian Environment · Published by Everything Blog

In short

Migrant butterflies from across continental Europe reached the south coast and East Anglia in phenomenal numbers, vastly exceeding the typical handful of sightings recorded each summer. The influx successfully produced British-born offspring this autumn, with hundreds seen along the Thames in Essex. Butterfly expert Neil Hulme anticipates seeing individuals emerge again next spring, though that alone will not guarantee permanent residency. Establishing Britain's 61st native species could ultimately rely on regular future migrations and the abundance of caterpillar foodplants.

Key points

  • A massive influx of Queen of Spain butterflies represents a bold attempt to colonize the…: A massive influx of Queen of Spain butterflies represents a bold attempt to colonize the British mainland.
  • Surviving the winter remains the primary challenge in establishing the insect as Britain'…: Surviving the winter remains the primary challenge in establishing the insect as Britain's 61st native butterfly species.
  • Planting wild and field pansies could provide caterpillars with the food needed to secure…: Planting wild and field pansies could provide caterpillars with the food needed to secure a permanent foothold.

Sources checked by our analysis pipeline: 1

The Queen of Spain has invaded. The enigmatic British visits of this gorgeous golden-coloured butterfly with distinctively shaped, squared-off hindwings have been recorded by lepidopterists for four centuries. Usually there are barely a handful of sightings each summer of a butterfly that is widespread across continental Europe.

This year, thousands have flown in, some from France and Spain that have reached the south coast, and others from the Netherlands, which have fluttered into East Anglia.

These migrants have bred, and British-born offspring have emerged this autumn. Last week, hundreds were spotted at East Tilbury and Linford beside the Thames in Essex.

“It’s a bold attempt at the colonisation of the UK,” says butterfly expert Neil Hulme. “The numbers that have poured into the UK has been phenomenal.”

Will the Queen of Spain become Britain’s 61st native species? It has probably only successfully overwintered here twice in the last 30 years, at Minsmere in Suffolk in the 1990s, and close to Chichester around 2010.

But Hulme is certain that so many arrivals will mean some butterflies will be seen in Britain…

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