Distribution. SE Brazil (in the states of Espirito Santo, neighboring E Minas Gerais, and extreme N Rio de Janeiro), the distribution may be at least partly limited by the Rio Jequitinhonha to the N, but probably intergrades with distributions of the Blackfronted Titi (C. nigrifrons) to the S and W and the Southern Bahian Titi (C. melanochir) to the N. The exact present-day limits of the distribution of C. personatus are unclear. in Phitheciidae

Distribution. SE Brazil (in the states of Espirito Santo, neighboring E Minas Gerais, and extreme N Rio de Janeiro), the distribution may be at least partly limited by the Rio Jequitinhonha to the N, but probably intergrades with distributions of the Blackfronted Titi (C. nigrifrons) to the S and W and the Southern Bahian Titi (C. melanochir) to the N. The exact present-day limits of the distribution of C. personatus are unclear.