Photo of Orthetrum luzonicum-Kadavoor-2016-03-25-001

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Source page:	http://commons.wikimedia.org/wiki/File:Orthetrum_luzonicum-Kadavoor-2016-03-25-001.jpg

Orthetrum luzonicum Brauer, 1868

Description

English: Orthetrum luzonicum, Tricolored Marsh Hawk, is a medium sized dragonfly with blue, yellow and brown markings. Eyes are bluish green with violet or brownish spots. Thorax is pale olivaceous green with brown lateral stripes. Dorsal side has a distinct yellow "Y" shaped mark. In older individuals, brown and yellow markings may be totally replaced by pale blue pruinescence.

They look alike Orthetrum glaucum and Orthetrum triangulare. However, the eyes of Orthetrum luzonicum are a vivid blue/green colour and of Orthetrum glaucum eyes are dull in comparison.

The male's thorax and abdomen are bright powdery blue and S9-10 can be black, though there are specimens where this turns blue too. The males also have slight yellow/black markings on the abdomen, which seem slightly variable depending on age.

Like the male, the female becomes pruinosed. The thoracic markings are different and the eyes are similar in colour to that of the male, making it easily identifiable.

Depicted place

English: Kadavoor, Kerala, India.

Gender

Male

Date

25 March 2016

Photographer

Jeevan Jose, Kerala, India

Notes

The equipment used to produce this media are acquired through community support.

Source

Own work

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Camera location	10° 00′ 10.73″ N, 76° 44′ 00.52″ E	View this and other nearby images on: OpenStreetMap - Google Earth	10.002981; 76.733478

Quality image

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Photo's description:

Orthetrum luzonicum, Tricolored Marsh Hawk, is a medium sized dragonfly with blue, yellow and brown markings. Eyes are bluish green with violet or brownish spots. Thorax is pale olivaceous green with brown lateral stripes. Dorsal side has a distinct yellow "Y" shaped mark. In older individuals, brown and yellow markings may be totally replaced by pale blue pruinescence. They look alike Orthetrum glaucum and Orthetrum triangulare. However, the eyes of Orthetrum luzonicum are a vivid blue/green colour and of Orthetrum glaucum eyes are dull in comparison. The male's thorax and abdomen are bright powdery blue and S9-10 can be black, though there are specimens where this turns blue too. The males also have slight yellow/black markings on the abdomen, which seem slightly variable depending on age. Like the male, the female becomes pruinosed. The thoracic markings are different and the eyes are similar in colour to that of the male, making it easily identifiable. Depicted place English: Kadavoor, Kerala, India. Gender Male Date 25 March 2016

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EXIF data:
File name	orthetrum_luzonicum-kadavoor-2016-03-25-001.jpg
Size, Mbytes	14.345447265625
Mime type	image/jpeg
Camera manufacturer	SONY
Camera model	ILCA-77M2
Orientation of image	1
Image resolution in width direction	300
Image resolution in height direction	300
Unit of X and Y resolution	2
Exposure time	1/60 sec (0.016666666666667)
F number	f / 11
Exposure program	3
ISO speed rating	400
Exif version	0230
Lens focal length	150 mm
Date and time original image was generated	2016:03:25 14:23:31
Date and time image was made digital data	2016:03:25 14:23:31
Brightness	5.7671875
Exposure bias	0
Maximum lens aperture	2.96875
Metering mode	5
User comments
Scene type
Exposure mode	7
Digital zoom ratio	1
Focal length in 35 mm film	225 mm
Software used	RawTherapee

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