Photo of Tri-coloured Marsh Hawk Orthetrum luzonicum Female by kadavoor

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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.

Taken at Kadavoor, Kerala, India.

മലയാളം: ത്രിവർണൻ വയലി. എറണാകുളം ജില്ലയിലെ കടവൂര് നിന്നുമെടുത്ത ചിത്രം.

Date

1 April 2010

Source

Own work

Author

Jeevan Jose, Kerala, India

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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

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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. Taken at Kadavoor, Kerala, India. മലയാളം: ത്രിവർണൻ വയലി. എറണാകുളം ജില്ലയിലെ കടവൂര് നിന്നുമെടുത്ത ചിത്രം.

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EXIF data:
File name	tri-coloured_marsh_hawk_orthetrum_luzonicum_female_by_kadavoor.jpg
Size, Mbytes	0.845498046875
Mime type	image/jpeg
Camera manufacturer	Panasonic
Camera model	DMC-FZ28
Date and time original image was generated	2010:04:01 12:11:11
Date and time image was made digital data	2010:04:01 12:11:11

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