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Fly




Fly
Temporal range: 245 –0 Ma
Middle Triassic – Recent
Hoverfly Syrphus ribesii shows the main dipteran features: large eyes, small antennae, sucking mouthparts, single pair of flying wings, hindwings reduced to clublike halteres
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Superorder: Panorpida
(unranked): Antliophora
Order: Diptera
Linnaeus, 1758

A fly (plural: flies) is an insect of the order Diptera.[1] The Diptera is a large order of advanced flying insects.

Their most obvious distinction from other insects is in their flight. A typical fly has two flight wings on its thorax and a pair of halteres. The halteres, which evolved from the hind wings, act as flight sensors: they are balance organs. Also flies have large eyes with excellent wide-angle vision.

With the help of their eyes and halteres, flies are exceptional fliers. They can avoid most predators, and are the most difficult insects to capture by hand. Their jinks, dives and turns to avoid their predators is their main adaptation.[2] "These flies do a precise and fast calculation to avoid a specific threat and they are doing it using a brain that is as small as a grain of salt".... "And they can fly like an ace at birth. It's like putting a newborn baby in the cockpit of a fighter aircraft and it knowing what to do".[2]

The only other order of insects bearing two true, functional wings plus any form of halteres are the Strepsiptera, a small order of insects. In contrast to the flies, the Strepsiptera evolved their halteres from their front wings and their flight wings are their rear wings.

The presence of a single pair of wings distinguishes true flies from other insects with "fly" in their name, such as mayflies, dragonflies, damselflies, stoneflies, whiteflies, fireflies, sawflies, caddisflies, butterflies or scorpionflies.

Some true flies have become secondarily wingless, including some that live in social insect colonies.

Flies are also holometabolous, with complete metamorphosis.

Kinds of flies


There are an estimated 1,000,000 species, although only about 150,000 species have been described.

There are many different kinds of flies. Scientists have named 85,000 kinds (species).

Some flies do not have the word fly in their name, so people may not know they are flies.

Some insects have the word fly in their names, but they are not flies at all.

References


  1. from the Greek di = two, and ptera = wings
  2. 2.0 2.1 Ghosh, Pallab 2014. Flies can manoeuvre like fighter jets. 'BBC News Science & Environment. [1]








Categories: Basic English 850 words | Flies








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