Range Description

There are two recognized subspecies:

According to Hershkovitz (1966), S. m. martinsi occurs between the Rio Nhamundá (left bank), east to the Rio Erepecurú, north of the Rio Amazonas. It would appear that the mouth of the Rio Trombetas marks the northern limit, but Ávila-Pires (1974) extends the distribution north-east to the upper Rio Erepecurú. The northernmost record is Cachoeira Porteira on the Rio Trombetas (Rylands et al. 1993).

Saguinus m. ochraceus is believed to occur on the west bank of the Rio Nhamundá, possibly extending west to the Rio Uatumã, north of the Rio Amazonas (Hershkovitz 1966). The northern limit to its range mighty be the left bank of the Rio Alalaú (Rylands et al. 1993).