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Beautiful Demoiselle; Caballito del diablo azul

Calopteryx virgo


Female. The male wings are entirely metallic blue. Immature ones often have much paler, browner wings. They have metallic blue-green bodies and blue-green eyes. The female has dark brown iridescent wings, a white patch near the tip of the wings (called pseudopterostigma) and a metallic green body with a bronze tip of the abdomen. Males are territorial, perching in bankside plants and trees. They chase passing insects, often returning to the same perch. Males can stray well away from water, females live away from water unless egg-laying or seeking a mate.


River banks at the mountains. Parque Regional de la Sierra de Gredos


Camera Model: NIKON D300. Exposure Time: 1/250 sec.; f/8; ISO Speed Rating: 800. Exposure Bias: 0 EV. Focal Length: 300.0 mm. No flash fired.

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Spotted by

Castilla y León, Spain

Lat: 40.34, Long: -5.13

Spotted on Jul 16, 2016
Submitted on Nov 25, 2016

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