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Aeshna canadensis, Canada darner; Aeshna clepsydra, mottled darner; Aeshna constricta, lance-tipped darner; Aeshna eremita, lake darner; Aeshna interrupta, variable ...
The migrant hawker (Aeshna mixta) is one of the smaller species of hawker dragonflies. It can be found away from water but for breeding it prefers still or slow-flowing water and can tolerate brackish sites. The flight period is from July to the end of October. A. mixta occurs in North Africa, southern and central Europe to the Baltic region.
Dragonfly vision is thought to be like slow motion for humans. Dragonflies see faster than humans do; they see around 200 images per second. [80] A dragonfly can see in 360 degrees, and nearly 80 per cent of the insect's brain is dedicated to its sight. [81]
Aeshna caerulea (Ström, 1783) – azure hawker [5] Aeshna canadensis Walker, 1908 – Canada darner [7] Aeshna clepsydra Say, 1839 – mottled darner [7] Aeshna constricta Say, 1839 – lance-tipped darner [7] Aeshna crenata Hagen, 1856 – Siberian hawker [2] Aeshna cyanea (Müller, 1764) – blue hawker, [2] southern hawker [5]
Aeshna isoceles (or isosceles) is a small hawker dragonfly that is found in Europe, mostly around the Mediterranean, and the lowlands of North Africa. Its common name in English is green-eyed hawker. In the United Kingdom it is a localised species, and is called the Norfolk hawker.
The common hawker, [2] moorland hawker [1] or sedge darner [1] (Aeshna juncea) is one of the larger species of hawker dragonflies. It is native to Palearctic (from Ireland to Japan) and northern North America. The flight period is from June to early October. It is 74 millimetres (2.9 in) long with a brown body.
Aeshna canadensis, the Canada darner, is a species of dragonfly in the family Aeshnidae. It is common throughout southern Canada and the northern United States. It is common throughout southern Canada and the northern United States.
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 ...