IUCN threat status:

Least Concern (LC)

Morphology

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Red titi monkeys are small New World monkeys, with both males and females weighing around 1 kg. The length of their head and body together ranges from 287 to 390 mm, they also have a tail that is about one third to one fourth the length of the head and body combined. The tail is not prehensile, but may play a role in male-female bonding, as mates have been seen sitting with tails intertwined. Red titi monkeys have a dental formula of 2/2, 1/1, 3/3, 3/3. Males and females have canines which are similar in size and length. The molars of Callicebus species are morphologically simple.

Red titi monkeys have coarse fur covering most of the body, except for the face. They have a band of white fur across the crown of the head and red colored fur running along the sides of the cheeks, chest, and belly. The back is covered in darker brown fur while the inner arms and legs are orange or red. The hind limbs are shorter than the forelimbs. The three subspecies of Callicebus cupreus: C. c. cupreus, C. c. ornatuas, and C. c. discolor, can be distinguished from one another based on differences in the color of fur across the forehead. Callicebus c. discolor has white or buffy colored fur running across the forehead, while C. c. cupreus has a less contrasting buffy colored forehead with an outline of black fur. Callicebus c. ornatus shares the pale colored forehead with C. c. discolor, but can be distinguished by the pale fur on its digits.

Average mass: 1 kg.

Other Physical Features: endothermic ; homoiothermic; bilateral symmetry

Sexual Dimorphism: sexes alike

Average mass: 1120 g.

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Source: Animal Diversity Web

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