Banded demoiselle (Calopteryx splendens)

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Male banded demoiselle in flight
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Banded demoiselle fact file

Banded demoiselle description

KingdomAnimalia
PhylumArthropoda
ClassInsecta
OrderOdonata
FamilyAgriidae
GenusCalopteryx (1)

A striking species of damselfly, the banded demoiselle (Calopteryx splendens) has the same style of butterfly-like flitting flight as that of the beautiful demoiselle (Calopteryx virgo) (3). The male banded demoiselle has a metallic bluish-green body with a central band of blackish-blue pigment on the wings. The female is metallic green and lacks the band on the wings (3).

The male banded demoiselles can be distinguished from males of the similar species, the beautiful demoiselle, as the latter species lacks the distinct band of pigmentation on the wing (4).

There are a number of different subspecies and forms of the banded demoiselle, which differ in the shading of the wings (1).

Also known as
banded agrion.
French
Caloptéryx Éclatant.
Size
Male abdomen length: 33 - 39 mm (2)
 
Female abdomen length: 33 - 40 mm (2)
Male hind wing: 27 - 32 mm (2)
Female hind wing: 31 - 36 mm (2)
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Banded demoiselle biology

The larva of the banded demoiselle occurs among the roots and lower reaches of aquatic plants, usually close to the bottom of the water column. Active mainly at night (3), the larvae are effective predators with the fascinating feature of being able to fire out the lower portion of the mouth, known as the ‘mask’, in order to grasp passing prey (5). Larval development takes around two years in the banded demoiselle, and the larva overwinters twice in the mud at the bottom of the river or pond (3). When it is ready to emerge as an adult, the larva will often travel up to 100 metres out of the water, and typically complete its emergence in a shrub or tree (3).

After emergence, the adult banded demoiselle takes seven to ten days to mature, and the flight period of the adult is between May and the end of September (2) (4). The male banded demoiselle will establish a territory around a suitable egg-laying site, which usually includes abundant vegetation protruding from the water (4). The male may actively court females with a fluttering display flight (3), and then lead them to a suitable egg-laying site (5). After mating, the female will oviposit alone, often placing the eggs into the tissues of submerged vegetation (4). The eggs take around 14 days to hatch (3).

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Banded demoiselle range

The banded demoiselle is found in central and southern mainland Europe (2), across Asia to China (4). In Britain, this species occurs mainly in the south and midlands, but there are a few scattered populations in the Lake District (3).

You can view distribution information for this species at the National Biodiversity Network Gateway.
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Banded demoiselle habitat

The banded demoiselle inhabits slow-moving rivers, ponds and other still water-bodies (2), with a preference for relatively clear waters (5). This species also requires sunny patches and the presence of abundant emergent aquatic vegetation (5).

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Banded demoiselle status

The banded demoiselle is classified as Least Concern (LC) on the IUCN Red List (1).

IUCN Red List species status – Least Concern

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Banded demoiselle threats

While the banded demoiselle is considered to be widespread and common, it nevertheless faces a number of threats. Habitat loss and pollution of its freshwater habitat are problems currently facing this species throughout its range (1).

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Banded demoiselle conservation

The population trends of the banded demoiselle are currently being monitored, and this species may also benefit from general plans to conserve freshwater habitats (1).

View information on this species at the UNEP World Conservation Monitoring Centre.
There may be further information about this species available via the National Biodiversity Network Gateway.
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Find out more

Learn more about the banded demoiselle:

For more information on dragonflies and damselflies:

For more on invertebrates and their conservation:

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Authentication

This information is awaiting authentication by a species expert, and will be updated as soon as possible. If you are able to help please contact:
arkive@wildscreen.org.uk

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Glossary

Larvae
Stage in an animal’s lifecycle after it hatches from the egg. Larvae are typically very different in appearance to adults; they are able to feed and move around but usually are unable to reproduce.
Larval
Of the stage in an animal’s lifecycle after it hatches from the egg.
Oviposit
Oviposition is egg-laying in insects, using a specialised organ called an ovipositor.
Subspecies
A population usually restricted to a geographical area that differs from other populations of the same species, but not to the extent of being classified as a separate species.
Territory
An area occupied and defended by an animal, a pair of animals or a group.
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References

  1. IUCN Red List (March, 2011)
    http://www.iucnredlist.org/
  2. D’Aguilar, J., Dommanget, J-L, & Prechard, R. (1986) A field guide to the dragonflies of Britain, Europe and North Africa. William Collins Sons & Co Ltd, London.
  3. Brooks, S. (1997) Field guide to the dragonflies and damselflies of Great Britain and Ireland. British Wildlife Publishing, Hampshire.
  4. Nelson, B., Thompson, R., & Morrow, C. (2000) [In] DragonflyIreland (February 2004):
    http://www.habitas.org.uk/dragonflyireland/5617.htm
  5. Gibbons, B. (1986) Dragonflies and Damselflies of Britain and Northern Europe. Hamlyn Limited, London.
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Image credit

Male banded demoiselle in flight  
Male banded demoiselle in flight

© Robert Pickett / papiliophotos.com

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