An endemic organism is one that is found in one specific location and nowhere else in the world.
Endemic species are often found on islands. The geographical isolation means that populations interbreed and evolve to fill roles within the ecosystem that would be taken by other organisms on the mainland. Over time this leads to the generation of a new species that evolved in, and is endemic to, one specific area.
An good example of endemic insects are the 70 species of Weta which are found only in New Zealand.
A photograph of a female Tree Weta; one of around 70 species of Weta that are endemic to New Zealand.
Photograph by Wolfgang K..
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