Habitat and Ecology
IUCN Red List Assessment
Red List Category
Red List Criteria
The species currently also meets the thresholds for the Vulnerable category under criteria B and C. Almost all localities exhibit only a low density and many in Morocco and Tunisia have recently declined due to stream pollution and drying during summer, in connection to agricultural practices, irrigation, water harnessing and domestic discharge. The total population is presently less than 10,000 imagoes. A minimum of 30% of the overall localities have been lost by within the last 100 years, and this will certainly continue in the future, owing to demographic expansion in the Maghreb [x2.5 in Morocco, x3.1 in Algeria and x2.3 in Tunisia from 1961 to 2003 (FAO 2004-2005)] and global climatic changes. A decline of at least 10% is expected within the next 10 years.
- 2006Vulnerable (VU)
The glittering demoiselle (Calopteryx exul) is an endangered species of damselfly in the family Calopterygidae. It is found in Algeria, Morocco, and Tunisia. Its natural habitat is along rivers, which are threatened by pollution.
This is a large damselfly with a total length of up to 50 mm. Unlike most other Calopteryx damselflies, the wings are unbanded in both sexes although the male has metallic venation that produce a distinctive blue flash on each wing beat when the insect is flying in the sun.
- Boudot, J.-P. 2005. Calopteryx exul. 2006 IUCN Red List of Threatened Species. Downloaded on 9 August 2007.
- Dijkstra, Klaas-Douwe B. (2006). Field Guide to the Dragonflies of Britain and Europe. p. 69. ISBN 0-9531399-4-8.
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