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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.
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.
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 ...
A particular perch may give a dragonfly a good view over an insect-rich feeding ground; males of many species such as the Pachydiplax longipennis (blue dasher) jostle other dragonflies to maintain the right to alight there. [50] Defending a breeding territory is common among male dragonflies, especially in species that congregate around ponds.
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.
It is a medium-sized dragonfly with dark face and bluish eyes. Its thorax is also black with a broad apple green stripe on both sides. Segments 1-2 and 8–10 in the abdomen are black and the remaining segments are pruinosed with azure blue. It is usually found in marshes associated with hill streams where it breeds. [7] [8]
It is a big dragonfly with blue eyes, pale green thorax and dark brown abdomen with bright yellowish-red markings on the sides. Its wings are transparent; but there are brown patches on the inner half of the hind-wings. Segment 1 and sides of segment 2 of the abdomen are pale green.
The blue corporal is a small, thickset dragonfly, measuring 29–40 mm (1.1–1.6 in) in length. [8] The male has a dark brown thorax with two wide, bluish, pruinose stripes on the front and a pruinose blue abdomen. His face is black, and his eyes dark brown.