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Like most other emeralds, the downy emerald has bright shiny green eyes.
The downy emerald (Cordulia aenea) is a species of dragonfly.
In particular this is the only site in the Mendips for the Downy Emerald.
Waldegrave Pool is the only Mendip breeding site for Downy Emerald dragonflies.
The White-legged Damselfly (Platycnemis pennipes) is also found along the river and the Downy Emerald (Cordulia aenea) is found between Box Hill and Leatherhead.
The Waldegrave Pool, part of Priddy Mineries, is an important site for dragonflies, including Downy Emerald (Cordulia aenea) and Four-spotted Chaser (Libellula quadrimaculata).
Dragonflies include the nationally rare White-faced Darter Leucorrhinia dubia and the locally uncommon Downy Emerald Cordulia aenea and Black Darter Sympetrum danea.
Three nationally scarce species are present; the blue-tailed damselfly Ischnura pumilio, a species known to prefer shallow, newly created pools; the downy emerald Cordulia aenea and the brilliant emerald Somatochlora metallica.
Although it has been eliminated from some of its historic native area in Great Britain due to habitat loss, dense populations of the downy emerald can still be found there in spots where its ideal habitat remains.
An inventory of dragonflies in the north-eastern end of the lake documented a presence of Red-eyed Damselfly, Northern Damselfly, Azure Damselfly, Brown Hawker, Club-tailed Dragonfly, Downy Emerald, and Four-spotted Chaser.
The most common dragonfly is Emerald Damselfly, but Azure Damselfly, Variable Damselfly, Scarce Emerald Damselfly, Common Blue Damselfly, Downy Emerald, and Red-eyed Damselfly are also present.
A second inventory in 2000 produced the following list interpreted as a normal amount of species: Common Hawker, Brown Hawker, Irish Damselfly, Variable Damselfly, Downy Emerald, Red-eyed Damselfly, Northern White-faced Darter, Brilliant Emerald, and Black Darter.
The downy emerald (Cordulia aenea) is a species of dragonfly.
The White-legged Damselfly (Platycnemis pennipes) is also found along the river and the Downy Emerald (Cordulia aenea) is found between Box Hill and Leatherhead.
The Waldegrave Pool, part of Priddy Mineries, is an important site for dragonflies, including Downy Emerald (Cordulia aenea) and Four-spotted Chaser (Libellula quadrimaculata).
Dragonflies include the nationally rare White-faced Darter Leucorrhinia dubia and the locally uncommon Downy Emerald Cordulia aenea and Black Darter Sympetrum danea.