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Saturday, 1 November 2014

Dragonfly

Today there are approximately 6,000 named dragonfly species in the world. This figure is only approximate because new species are constantly being discovered and described for the first time.


Dragonflies have two sets of wings. They can move these together or separately. This movement allows dragonflies to fly up, down, or backward, and make quick turns. They can also hover like a helicopter.

Dragonflies have a high power/weight ratio, and have been documented accelerating at 4 G linearly and 9 G in sharp turns while pursuing prey.

Dragonflies may be the most effective predators on the planet (apart from humans). When setting off to feed on other flying insects, dragonflies manage to snatch their targets in midair more than 95 percent of the time.


A dragonfly eats, on average, 300 mosquitoes per day.

Dragonflies are able to fly at more than 20 miles per hour.

The dragonfly Pantala flavescens, only 1.5 inches long, has a range of over 4,400 miles, a world record for long distance insect flight.

The treeline emerald is found in northern Alaska, within the Arctic Circle, making it the most northerly of all dragonflies

Though dragonflies possess six legs, they cannot walk.

Dragonflies have 30,000 eye facets whereas houseflies only have about 6,000 and humans have three.

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