Subspecies and Distribution. R.a.affinusR.a.,1821—SThailand,MalayPeninsula,andSingapore. R.a.bancanaLyon,1906—BangkaI,Indonesia. R.a.baramensisBonhote,1900—NBorneo,inSabah,Brunei,Sarawak,andNEKalimantan,alsoinBanggiIandlikelyadjacentIs. R.a.bunguranensisThomas&Hartert,1894—LautandBunguranIsoftheNorthNatunaIs,Indonesia. R.a.cothurnataLyon,1911—WBorneo(WestKalimantan). R.a.ephippiumS.Miiller,1838—SEBorneoandLautI,Indonesia. R.a.hypoleucosHorsfield,1823—Sumatraandadjacentislands(TuangkuI,PiniIandTanahmasaI),Indonesia. R.a.insignisMiller,1903—RiauIs,Indonesia. R. a. polia Lyon, 1906 — Belitung I, Indonesia. Population on Serasan I, one of the South Natuna Is (just off W coast of Borneo) and populations of many islands between Malay Peninsula and E Sumatra are of unknown subspecific affiliation. in Sciuridae

Subspecies and Distribution. R.a.affinusR.a.,1821—SThailand,MalayPeninsula,andSingapore. R.a.bancanaLyon,1906—BangkaI,Indonesia. R.a.baramensisBonhote,1900—NBorneo,inSabah,Brunei,Sarawak,andNEKalimantan,alsoinBanggiIandlikelyadjacentIs. R.a.bunguranensisThomas&Hartert,1894—LautandBunguranIsoftheNorthNatunaIs,Indonesia. R.a.cothurnataLyon,1911—WBorneo(WestKalimantan). R.a.ephippiumS.Miiller,1838—SEBorneoandLautI,Indonesia. R.a.hypoleucosHorsfield,1823—Sumatraandadjacentislands(TuangkuI,PiniIandTanahmasaI),Indonesia. R.a.insignisMiller,1903—RiauIs,Indonesia. R. a. polia Lyon, 1906 — Belitung I, Indonesia. Population on Serasan I, one of the South Natuna Is (just off W coast of Borneo) and populations of many islands between Malay Peninsula and E Sumatra are of unknown subspecific affiliation.