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| Number of described species by group | |
| These numbers reflect a huge amount of scientific study. In order for a species to be included on the above list, it was examined by a specialist who carefully compared its features to those of all similar species. Then, once satisfied that the species in hand was different from all known forms, the specialist published a thorough description including drawings, counts of hairs along forelegs, length of measurable parts such as limbs and antennae, photographs, etc. The new species has then been described, and is added to our list of "known" species. | |
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 Credit: Modified from Wilson (1992) |
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| Number of living species of all organisms
currently known |
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| These three pie charts show the same information diagrammatically. (1/3) | |
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 Credit: Modified from Wilson (1992) |
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| Number of living animal species currently known; animals: total species, 1,032,000 | |
| These three pie charts show the same information diagrammatically. (2/3) | |
| « previous | next » |
 Credit: Modified from Wilson (1992) |
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| Number of living species of higher plants currently known | |
| These three pie charts show the same information diagrammatically. (3/3) | |
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