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Anax immaculifrons, [2] the magnificent emperor, [1] or blue darner, [3] is a species of dragonfly in the family Aeshnidae.Almost all its range is in West and South Asia (the population further east in Asia is now recognized as a separate species, A. aurantiacus); it is Europe's largest dragonfly but very marginal in the continent where restricted to some Aegean Islands and Cyprus.
Crocothemis nigrifrons is a species of dragonfly in the family Libellulidae. [3] Its common names include black-headed skimmer and blue-scarlet dragonfly. [4] It is found in Australia, Papua New Guinea, and the Solomon Islands. The male is blue and black, and the female is yellow to brown in color. [4]
It is a medium sized dragonfly with dark face and greenish blue eyes. The thorax of old males are dark blue due to pruinescence. Its wings are transparent with dark amber-yellow tint in the extreme base. Its abdomen is pruinosed with blue color up to segment 8; last two segments are black.
The emperor dragonfly [2] or blue emperor [1] (Anax imperator) is a large species of hawker dragonfly of the family Aeshnidae. It is the largest dragonfly in most of Europe, including the United Kingdom, [ 2 ] although exceeded in some areas by other species.
Dragonflies having simple flaps shed the eggs in water, mostly in flight. Dragonflies having ovipositors use them to puncture soft tissues of plants and place the eggs singly in each puncture they make. [32] [34] [35] [36] Dragonfly nymphs vary in form with species, and are loosely classed into claspers, sprawlers, hiders, and burrowers. [17]
The blue-eyed darner is a large species with a length of 65–70 mm (2.6–2.8 in). The eyes of both males and females are bright blue. The male is dark brown to brownish black. The top of the thorax, behind the head, is marked with two blue stripes, and each side of the thorax is marked with a pair of blue diagonal stripes. The abdomen is ...
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.