|Informação sobre a Foto|
|Direitos de Autor: Narayanan Ganesan (gannu)
|Data da Foto: 2008-07-20|
|Exposição: f/7.1, 1/80 segundos|
|More Photo Info: [view]|
|Versão da Foto: Versão Original|
|Data de Submissão: 2008-07-22 5:27|
|[Notas - Normas] Nota do Artista|
Is a dragonfly a fly?
No. Flies are insects with two wings. Dragonflies have four wings. However, both flies and dragonflies are insects, meaning that they have six legs and three body parts: a head, a thorax, and an abdomen.
Why are they called dragonflies?
The name comes from their fierce jaws, which they use to catch flies (among other winged insects).
Where do dragonflies come from?
The dragonfly begins its life as an egg. Adult female dragonflies lay their eggs in water. After about two weeks, the eggs hatch and an immature dragonfly, or nymph, emerges. The nymphs are not pretty like the adults. They have tiny wings and a large lower lip, which they use to catch their prey (often mosquito larvae). Dragonfly nymphs live in the water. As they grow, they molt (shed their skin). Nymphs of some species may take as long as three years to mature.
When the dragonfly nymph reaches maturity, it crawls out of the water onto a plant stem. Then its skin begins to split. First the head, then the thorax, then the legs, and then the wings of an adult dragonfly emerge. Soon the newly emerged dragonfly is able to fly. The process takes about two hours. It takes about two days before the adult dragonfly's beautiful colors are fully developed. Adult dragonflies live only a few months.
How long have dragonflies been around?
Dragonflies are ancient insects. They were around before the dinosaurs! Ancient dragonflies may have been considerably larger than those we see today. A fossilized impression of a dragonfly wing, found in a coal mine in England, is the oldest known dragonfly specimen. This dragonfly lived 300 million years ago and had a wingspan of eight inches. The largest known dragonfly had a wingspan of 24 inches (two feet). Today, the largest dragonfly is found in South America and has a wingspan of slightly over seven inches. Other than being smaller, modern-day dragonflies do not look very different from their ancestors.
Are dragonflies like other insects?
Dragonflies and damselflies belong to an order of insects all their own, called Odonata. Although the two are similar, damselflies are smaller than dragonflies. In addition, damselflies can fold their wings over their backs when they are at rest. Dragonflies can't fold their wings, so they rest with their wings held straight out.
Are dragonflies beneficial to humans?
You bet they are! In fact, dragonflies are sometimes called "mosquito hawk" because they catch and eat so many mosquitoes. Always on the hunt, dragonflies consume gnats, flies, and mosquitoes--all of which humans consider pests.
Why are dragonflies such good hunters?
Dragonflies' ability to maneuver makes them able to out-fly their prey. But dragonflies also have the advantage of excellent eyesight. If you've ever watched dragonflies, no doubt you have noticed their huge eyes. Each of the two large eyes is made up of thousands of six-sided units. Together, these smaller eyes enable a dragonfly to detect even the slightest movement. To test this, try sneaking up and catching a dragonfly. You usually come up empty-handed.
Exposure Time: 1/80
ISO Speed Ratings: 100
Focal Length: 180/1 mm
Date Taken: 2008-07-20 14:16
Metering Mode: Average
Flash: Flash did not fire, compulsory flash mode
File Size: 271 kb
haraprasan, Argus, boreocypriensis, jusninasirun marcou esta nota como útil
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- [2008-07-22 6:40]
A fine close macro showing a dragonfly's head with fine sharpness and detail from a pleasing POV.
The use of the word 'fly' for winged insects stems from the old English naturalists of about 3-400 years ago when any winged insect, no matter if it was a dragonfly, a butterfly or mayfly was called a fly. The concept of true flies came in later when people like Linnaeus began to classify insects.
Best wishes, Ivan
Hi Ganesh, perfect macro shot of the head part of a dragonfly accompany with wonderful note on dragonflies. TFS.
- [2008-07-22 10:01]
Hi Nara,one of my preferd pic,the eyes of dragonflies are always a great spectacle,the sharpenss isn't at the top,but the colors are very very nice,excellent work,my best compliments,Luciano
Hello Ganesh. This is super shot. Stunning image in close macro. Good detail with good metering. Thanks for sharing and warmest regards. Jusni
Hi Ganesh Ji,
A lovely capture of this beautiful dragonfly close up. Superb details and a lovely composition. Thanks a lot for sharing.
good closup of dragonflys head, i liked the nots very much, the pov is nice and so is the composition, the eye closer to the lens look a bit soft, may be you got too close to it, anyway a nice attempt, keep shooting my dear friend,
I am taking break for a couple of weeks and hope to see your good work again when i come back,
Beautiful closed up .Excellent POV and very well composed image.Head details and colors are very nice.
Hi Ganesh, superb portrait with fantastic details and splendid colors, I like a lot.
amazing extrem close up,