The Sunda Clouded Leopard, once thought to be only species of the Clouded Leopard family is, in fact, two species. The Sunda Clouded Leopard was only realised to be a distinct species different to those living elsewhere in Europe, in 2007. Now, it turns out, there are two different sub-species, the ones living in Sumatra, and the ones living in Borneo. A genetic analysis confirmed this.
I quote this from the BBC.
“Clouded leopards are the most elusive of all the big cats, which include lions, tigers, jaguars, snow leopards and normal spotted leopards.
Living across south-east Asia, into China and India, the leopards have larger cloud-like spots than ordinary leopards. Until 2006, all clouded leopards were thought to belong to a single species. However, genetic studies revealed that there are actually two quite distinct clouded leopard species.
As well as the better known clouded leopard living on the Asian mainland (Neofelis nebulosa), scientists determined that a separate clouded leopard species lives on the islands of Borneo and Sumatra. The two species are thought to have diverged over one million years ago. This leopard is now known as the Sunda clouded leopard (Neofelis diardi), though it was previously and erroneously called the Bornean clouded leopard.”
The genetic analysis was done on 15 Sunda Clouded Leopards, resident of Borneo, and 16 Sunda Clouded Leopards, resident of Sumatra. Skulls were also examined, and fur coats on display in museums. It is actually quite interesting. So the scientists (photo courtesy of Mr. Wilting), knew that the ones isolated on the islands had evolved, but now, it seems, those separated on separate islands, also evolved a little. It doesn’t sound like a giant impact, but it means that maybe this happened to other animals. Clouded Leopards are really elusive.
Again I quote the BBC. “The differences aren’t obvious: the Sunda clouded leopards on Borneo and Sumatra look alike. Both cats have similar patterned coats as they live in similar jungle habitats, the researchers suspect. But as well as being genetically distinct, the clouded leopards on both islands are also morphologically different, having unique features in their skulls and teeth. It is unclear what caused the Sunda clouded leopard to evolve into two forms.
“So far we can only speculate about the specific course of events in the evolution of the clouded leopard,” says team member Joerns Fickel, also at the Leibniz Institute for Zoo and Wildlife Research. But the researchers think that a volcanic eruption on Sumatra 75,000 years ago may have wiped out most clouded leopards. One group survived in China and colonised the rest of mainland Asia. Another hung on in Borneo, becoming the Sunda clouded leopard. This evolved into two types after a group colonised Sumatra via glacial land bridges, and then became cut off as sea levels rose.“
To read more extensively on this, check out the BBC Article on it.



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