|Norfolk Damselfly or
Norfolk Damselfly or Dark Bluet (Coenagrion armatum) is a species of blue damselfly of the family Coenagrionidae. This species acquired its common name from its discovery in 1903 and presence in a very restricted area of the Norfolk Broads. Records came from Sutton, Stalham, and Hickling Broads.
At first glance, this damselfly may resemble a Blue-tailed Damselfly or a Red-eyed Damselfly more than a typical Coenagrion species. Both sexes have a distinctive black abdomen with coloured segments at both the base and the tip.
This damselfly was lost from its British sites due to natural succession from open water to dry reedbeds. On the continent, it breeds in ponds ditches and slow rivers.
Its breeding biology is poorly known. Eggs are laid in the stems and leaves of aquatic plants. The larvae live amongst aquatic plants and probably emerge after one year.
The flight period in Britain used to extend from late May to late July. Males perch on floating leaves. It is a strong-flying damselfly.
Status and distribution
Status in Britain
The species was formerly recorded as a breeding species in Britain, in Norfolk. It was last recorded in 1968. Since its main range is from the Baltic area eastwards, the likelihood of recolonisation in Britain seems low.
- Coenagrion armatum. Watson, L., and Dallwitz, M.J. 2003 onwards. British insects: the Odonata (dragonflies and damselflies).
- Sahlén, G. (2006). "Coenagrion armatum". IUCN Red List of Threatened Species. Version 2010.3. International Union for Conservation of Nature. Retrieved 14 October 2010.
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