The flies belong as the mosquitoes to the order of Dipterans (the single pair of membranous wings), which includes more than 200000 kinds. Some flies have a horn at the same time aspirant and refoulante, what is translated by an injection of corrosive saliva, then the aspiration of liquid.

He can result from it a pain, then a lyse located baby. In Europe, the flies are only embarrassing, but, elsewhere in the world, they transmit many affections: paludism, yellow fever, parasitoses (onchocercoses, filarioses)

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