Callicebus (Torquatus) medemi Hershkovitz 1963
Callicebus (Torquatus) medemi Hershkovitz 1963, Mammalia, 27: 52.
Type Locality: Colombia, Putumayo, right bank of Rio Caqueta, Rio Mecaya.
Vernacular Names: Colombian Black-handed Titi.
Distribution: Amazonian region of Colombia.
Conservation: CITES – Appendix II; IUCN – Vulnerable.
Discussion: Subgenus Torquatus . Separated as a species from C. torquatus by Groves (2001 c).