Callosciurus prevostii subsp. atricapillus Schlegel 1863
Synonyms: Callosciurus prevostii subsp. armalis (Lyon 1911); Callosciurus prevostii subsp. carimatae (Miller 1906); Callosciurus prevostii subsp. pelapius (Lyon 1911); Callosciurus prevostii subsp. proserpinae (Lyon 1906); Callosciurus prevostii subsp. sanggaus (Lyon 1907) .
Distribution: Borneo (including Sarawak).