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One of the largest species in Europe, the emperor dragonfly is exceeded by magnificent emperor, which occurs only marginally in the east Mediterranean [9] and in length by females of the golden-ringed dragonfly, a species with an unusually long ovipositor. [10] Thus, in most of Europe the emperor is the largest dragonfly species present.
The flight muscles need to be kept at a suitable temperature for the dragonfly to be able to fly. Being cold-blooded, they can raise their temperature by basking in the sun. Early in the morning, they may choose to perch in a vertical position with the wings outstretched, while in the middle of the day, a horizontal stance may be chosen.
Sympetrum danae, the black darter or black meadowhawk, is a dragonfly found in northern Europe, Asia, and North America. At about 30 mm (1.2 in) long, it is Britain's smallest resident dragonfly. It is a very active late summer insect typical of heathland and moorland bog pools.
Once seen in Europe, in places like Portugal, Sweden, and Italy, as a darker portent (and sometimes even associated with witches), dragonflies now boast a heartening spiritual significance.
Common worldwide or nearly worldwide genera are Aeshna and Anax. Anax includes some of the largest dragonflies, including the North American A. walsinghami, Hawaiian A. strenuus, European A. imperator and A. immaculifrons, and African A. tristis, but these are all exceeded by another member of the family, the Asian Tetracanthagyna plagiata, which by wingspan and weight is the world's largest ...
The species is one of the most common and most widespread dragonflies in Europe. The range in the Western Palearctic covers a large part of Europe, to Scotland and southern Scandinavia in the north and to Italy (without the southwest) and the northern Balkans in the south); the eastern boundary is formed by the Urals and the western by Ireland.
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