Large copper butterfly (Lycaena dispar)

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Female large copper butterfly
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Large copper butterfly fact file

Large copper butterfly description

KingdomAnimalia
PhylumArthropoda
ClassInsecta
OrderLepidoptera
FamilyLycaenidae
GenusLycaena

The large copper butterfly (Lycaena dispar) has wings of a bright coppery-orange, fringed with black. The undersides are silvery-blue with black spots. Some specimens have several black spots on the upper wing. The caterpillars are green.

Size
Wingspan: 38 mm
Body length: 15 mm
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Large copper butterfly biology

The large copper butterfly emerges in July and lays its eggs on the leaves of great water dock (Rumex hydrolapathum). The caterpillars feed until the end of September, on the undersides of the leaves; their feeding leaves a characteristic 'window' since the upper part of the leaf is not eaten. They then hibernate over the winter among the old leaves of the dock. They re-emerge in April and feed until June when they enter the pupation stage of their lives. Not a lot is known about the habits of the adult butterflies, but they may be able to disperse over several kilometres, perhaps as far as 20 kilometres.

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Large copper butterfly range

Once widespread on the fens of East Anglia, particularly in Cambridgeshire, the large copper butterfly was declared extinct in Britain in 1851. Elsewhere, it is distributed over a large area of Europe, reaching into Asia. There are three recognised subspecies, the one most closely related to the extinct British butterfly being found mainly in the Netherlands.

You can view distribution information for this species at the National Biodiversity Network Gateway.
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Large copper butterfly habitat

The large copper butterfly is found in open fenland habitats.

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Large copper butterfly status

The large copper butterfly is classified as Near Threatened (NT) on the IUCN Red List (1).

IUCN Red List species status – Near Threatened

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Large copper butterfly threats

The biggest cause of the extinction of the large copper butterfly in Britain was undoubtedly the draining of the East Anglian fens in the 18th and 19th centuries. As populations fell, collecting played a part in the disappearance of the butterfly, eliminating it from the few remaining sites.

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Large copper butterfly conservation

Since its disappearance, a number of attempts have been made to re-introduce the large copper using the two subspecies. However, all so far have failed. In 1927, and again in 1955, another attempt began using the Dutch subspecies, at Woodwalton Fen in Cambridgeshire. The butterflies were kept and bred in a greenhouse and, periodically, specimens were released on to the fen. This project, too, has had little success at re-establishing the butterfly and the greenhouse at Woodwalton Fen has now been moved to Long Sutton Butterfly Park, with another station being set up at Stratford Butterfly Centre.

The large copper butterfly was added to the UK Biodiversity Action Plans (UKBAP), and is included in English Nature’s Species Recovery Programme (SRP). In 1993, studies on parts of the Norfolk Broads began, to ascertain whether suitable re-introduction sites could be found. This project is in partnership with the Dutch Authorities, and it is hoped that it will not be too long before this attractive insect is re-established in the UK.

There may be further information about this species available via the National Biodiversity Network Gateway.
View information on this species at the UNEP World Conservation Monitoring Centre.
The UK Biodiversity Action Plan for this species is available at UK BAP.
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Find out more

Find out more on butterfly conservation:

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Authentication

Information supplied by English Nature.

http://www.english-nature.org.uk

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Glossary

Hibernate
A winter survival strategy characteristic of some mammals in which an animal's metabolic rate slows down and a state of deep sleep is attained. Whilst hibernating, animals survive on stored reserves of fat that they have accumulated in summer. In insects, the correct term for hibernation is 'diapause', a temporary pause in development and growth. Any stage of the lifecycle (eggs, larvae, pupae or adults) may enter diapause, which is typically associated with winter.
Pupation
The process of becoming a pupa, the stage of an insect's development, when huge changes occur that reorganise the larval form into the adult form. In butterflies the pupa is also called a chrysalis.
Subspecies
A different race of a species, which is geographically separated from other populations of that species.
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References

  1. IUCN Red List (April, 2011)
    http://www.iucnredlist.org/
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Image credit

Female large copper butterfly  
Female large copper butterfly

© Tom Leach / gettyimages.com

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