DistributionRead full entry
Range DescriptionCabrera (1957) described its distribution as the south of the state of Pará, possibly entering contiguous parts of the state of Mato Grosso. Ávila-Pires (1986) was more exact, indicating that it occurs south from the Rio Irirí (C. a. argentata occurring to the north—confirmed by Martins et al. 1988), at least as far south as the southern (left) margin of the Rio Peixoto de Azevedo, an eastern tributary of the Rio Teles Pires. Martins et al. (1988) recorded it on the left bank of the Rio Irirí, south from its mouth. The southern limits would evidently not be beyond the headwaters and upper Rio Paraguai, approximately 14º30'S, where M. melanurus has been registered for a number of localities (Hershkovitz 1977; Vivo 1985). Ávila-Pires (1986; see also Pimenta and Sillva Jr. 2005) suggested that the Rio Teles Pires marks the western limit of its range. Martins et al. (1988) indicated that C. emiliae is limited to the west (left) bank of the lower Rio Irirí, with an undescribed C. argentata subspecies occurring between the Rios Irirí and Xingú. These authors also reported their belief that no marmoset occurs east of the Rio Xingú above the mouth of the Rio Irirí. The distribution of C. emiliae has been confused somewhat by its alignment with a similar, if slightly darker, form in the state of Rondônia by Vivo (1985), referred to here as Mico cf. emiliae (also discussed in the text on M. melanurus).