Thursday 10 October 2013

Exotic migrant butterflies colonise the UK


The Long-tailed Blue, a rare migrant butterfly from Europe, has raised broods at several sites across the south coast of England. Photo credit Neil Hulme/Butterfly Conservation.

Long-tailed blue butterfly and unusual moths here in numbers
October 2013. UKIP and the Mail would not be happy; some foreigners have been arriving here in large numbers. Exotic butterflies and moths from the Continent are attempting to colonise the UK following this year's warm summer and mild autumn.

Long-tailed Blue butterfly
The Long-tailed Blue, a rare migrant butterfly from Europe, has raised broods at several sites across the south coast of England, and some very rare migrant moths such as the Clifden Nonpareil and Rosy Underwing have been seen in increasing numbers in recent weeks across several southern counties.

Autumn moths
These sightings suggest that all three species may be attempting to colonise southern England and come as the autumn moth migration gets into full swing bringing rarities such as the Crimson Speckled and the Vestal to our shores from Southern Europe.

UK brood
Long-tailed Blues migrated to the south coast in August and in the last fortnight the first home-grown British adults have emerged with the butterflies seen at sites including Dover and Margate in Kent and Newhaven in Sussex and a site in Wiltshire. The butterfly has bred in the UK on a handful of occasions before but this summer is the first time the Long-tailed Blue has raised young over such a considerable area.

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