green-eyed hawker in flight - a photo on Flickriver

green-eyed hawker in flight

            The Aeshna isoceles 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  the green-eyed hawker, and is known as the Norfolk hawker. It has a brown colour with green eyes and clear wings and also a yellow triangular mark on the second abdominal segment which gave rise to its scientific name. It used to be in the genus Anaciaeschna as it has several differences from the other members of the genus Aeshna. Its specific name is often spelt isosceles.
A. isoceles is one of only two brown hawkers found in Europe, the other is A. grandis. Both have a brown thorax and abdomen but A. isoceles has green eyes and clear wings and a diagnostic yellow triangular mark on the second abdominal segment. The hindwings have an amber patch at their base. In contrast A. grandis has yellowish wings and blueish eyes. The green eye of A. isoceles stands out even in flight and in practice it is not difficult to tell these two dragonflies apart. In addition to the morphological differences A. isoceles is on the wing much earlier in the year than A. grandis.
A. isoceles is found in central Europe and around the Mediterranean and, the lowlands of North Africa. It is more common in eastern Europe than the south western Europe; it occurs in Spain and Portugal but is local.
It is found in wet areas, ponds, ditches and marshes, with dense vegetation with Water-soldier (Stratiotes aloides).

Taken on: June 4, 2023

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Holland-fotograaf « less

Sets appears in: • dragonflies

Groups appears in: • FAV 81-110 (P1, A+F5)

Camera: Canon EOS R7, f/11.0, 1/2000 sec, 248mm, ISO 1000 (more info) (hide info)

Camera:	Canon EOS R7
Lens:	RF100-400mm F5.6-8 IS USM
Aperture:	f/11.0
Exposure Time:	0.001 sec (1/2000)
Focal Length:	248mm
ISO:	1000
Exposure Bias:	0 EV
Flash:	No Flash
Exposure Program:	Program AE
Exposure Mode:	Auto
Metering Mode:	Multi-segment
White Balance:	Manual
Color Space:	sRGB
Software:	Adobe Photoshop 2023 Windows
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