It is endemic to Malaysia , where there are only four known subpopulations , found in Sabah and on the Sabahan border with Sarawak .
It may have undiscovered populations elsewhere in these states or in neighbouring Indonesia .
It is endemic to Malaysia , where there are only four known subpopulations , found in Sabah and on the Sabahan border with Sarawak , although it may have undiscovered populations elsewhere in these states or in neighbouring Indonesia .