Inucap mangkin wantah katemuin ring makudang wagian Kalimantan miwah Sumatra, menawi ri kala Pléistosén kasebar ring sajebag Asia Kelod Kangin miwah Cina Kelod.
They are currently discovered uniquely in pieces of Borneo and Sumatra, however during the Pleistocene they went all through Southeast Asia and South China.