How Many Species Of Insects Are There?
October 5th, 2008
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Estimates of the number of recognized insect species range from about 750,000 to upward of one million – but some experts think that this represents less than half of the number that exists in the world. About 7,000 new species are described each year, but unknown numbers are lost annually from the destruction of their habitats, mainly tropical forests.
[Source : The Handy Science Answer Book]