It is endemic to Mindanao in the Philippines and has two subspecies nominate "waterstradti" on the south-east, and "malindangensis" in the west.
Two subspecies are recognized: the nominate "waterstradti" in the south-east, and "malindangensis" in the west. It is endemic to Mindanao in the Philippines.
It is endemic to Mindanao in the Philippines. Two subspecies are recognized: the nominate "waterstradti" in the south-east, and "malindangensis" in the west.
It is endemic to Mindanao in the Philippines. Two subspecies are recognized: the nominate "waterstradti" in the south-east, and "malindangensis" in the west.