Indonesia: Province of Sumatera Utara (North Sumatra), Kabupaten Tapanuli Utara; {Kecamatan Adian Koting; Desa Pangsikaman} Aek Raisan (river); on the road of Sibolga-Tarutung, Sumatera Utara, Indonesia
Indonesia: Province of Sumatera Utara (North Sumatra), Kabupaten Tapanuli Tengah, Desa Purba-Baringin. Road of Barus Doloksanngul; tributary of Aek Batugarigis River., North Sumatra, Indonesia
Gunung Leuser Nature Reserves, Atjeh, North Sumatra. Ketambe Research Station and vicinity, Alas River valley, c. 35 km. NNW. of Kutacane., Sumatra, Indonesia, Asia-Tropical