Atlantic titi the general area. Additionally, all titi monkeys have "Dawn Calls" in the mornings in which the male and female usually duet the same song. Atlantic titi The Atlantic titi or masked titi ("Callicebus personatus") is a species of titi, a type of New World monkey, endemic to Brazil. The Atlantic titi is part of the genus "Callicebus" which is composed of thirteen species and sixteen subspecies. More specifically, they belong to the group "Callicebus moloch" which is composed of eight species and eight subspecies. Three subspecies of "Callicebus personatus" have been described in scientific literature: "C.p. melanochir", "C.p. nigrifrons", and
Collared titi least two species in this complex. But whether the Lucifer titi, "Cheracebus lucifer", or the Colombian black-handed titi, "Cheracebus medemi", are good species from this complex is in doubt. They are probably subspecies of "Cheracebus torquatus". Nevertheless, in this treatment "C. torquatus" is used in the sense of Hershkovitz (1990) until the systematics of this species complex becomes clearer. Five adults weighed an average of 1462 g (range 1410–1722 g) with a head-body length of around 290–390 mm and a tail length of about 350–400 mm. The face has very little hair, being limited to sparse short white hairs over