Subspecies and Distribution. S. I. labiatusE. Geoffroy Saint-Hilaire, 1812 — W Brazil, SE Peru, and N Bolivia, between the Rio Purus and Rio Madeira-Abuna system, S of the Rio Ipixuna, crossing the headwaters of the Rio Abuna in Bolivia, and S to the Rio Tahuamanu in N Bolivia, extending into SE Peru, but not W of the headwaters of the Rio Purus. S. L rufiventer Gray, 1843 — W Brazil (Amazonas State), between the rios Madeira and Purus, S from the Rio Solimoes to the Rio Ipixuna. S. I. thomasi Goeldi, 1907 — NW Brazil (Amazonas State), between the rios Japura and Solimoes, from the Auati-Parana to the Rio Tonantins. in Callitrichiade

Subspecies and Distribution. S. I. labiatusE. Geoffroy Saint-Hilaire, 1812 — W Brazil, SE Peru, and N Bolivia, between the Rio Purus and Rio Madeira-Abuna system, S of the Rio Ipixuna, crossing the headwaters of the Rio Abuna in Bolivia, and S to the Rio Tahuamanu in N Bolivia, extending into SE Peru, but not W of the headwaters of the Rio Purus. S. L rufiventer Gray, 1843 — W Brazil (Amazonas State), between the rios Madeira and Purus, S from the Rio Solimoes to the Rio Ipixuna. S. I. thomasi Goeldi, 1907 — NW Brazil (Amazonas State), between the rios Japura and Solimoes, from the Auati-Parana to the Rio Tonantins.Published as part of Russell A. Mittermeier, Anthony B. Rylands & Don E. Wilson, 2013, Callitrichiade, pp. 262-346 in Handbook of the Mammals of the World – Volume 3 Primates, Barcelona :Lynx Edicions on page 334, DOI: 10.5281/zenodo.573071