The dental formula is 2:1:3:3 on both the upper and lower jaws (Ankel-Simons, 2000). The tail of the Bolivian gray titi is not prehensile. The average body mass for males of the Bolivian gray titi was found to be 991 grams and for females it was 909 grams (Smith and Jungers, 1997).
This species has two subspecies that each have a different pelage coloration:
The Bolivian gray titi is found in the countries of Bolivia, Brazil and Paraguay (Rowe, 1996; Hershkovitz, 1990).
The two subspecies have different ranges:
The Bolivian gray titi is a diurnal and an arboreal species.
The Bolivian gray titi moves through the understory of the forest quadrupedally as well as by leaping (Fleagle, 1988).
tail-entwining: This is used to reinforce bonds amongst pairs. This is where two individuals are sitting and have their tails wrapped around each others.
The Bolivian gray titi gives birth to a single offspring.
Ankel-Simons, F. 2000. Primate Anatomy: An Introduction. Academic Press: San Diego.
Fleagle, J. G. 1988. Primate Adaptation and Evolution. Academic Press.
Hershkovitz, P. 1990. Titis, New World monkeys of the genus Callicebus (Cebidae, Platyrrhini): A preliminary taxonomic review. Fieldiana Zoology. No. 55.
Rowe, N. 1996. The Pictorial Guide to the Living Primates. Pogonias Press: East Hampton, New York.
Smith, R.J. and Jungers, W.L. 1997. Body mass in comparative primatology. Journal of Human Evolution. Vol. 32, 523-559.