Rio Mayo Titi

• Common Name: Rio Mayo Titi
• Taxonomy Classification Year: 1924
• Monkey Size: 29 to 45 cm (11 to 18 in)
• Skin Color(s): Brown or orange to dark brown
• Habitat: Forest, rainforest
• Diet: Omnivorous
• Native Countries: Peru

The Río Mayo titi^[1] (Plecturocebus oenanthe), also known as the San Martín titi, is native to the San Martín region of Peru and is considered Peru’s most endangered primate.

• They live in low-lying secondary forests and are often seen in bamboo groves, fruit clusters, grape vines, and palm-dominated forests.
• At first glance, Río Mayo titi appears to have round, robust bodies. This is because their dense fur obscures their actual body shape and sometimes makes them look like growth on a branch – great for hiding from predators!
• They use a long, intangible tail to balance themselves on branches.
• They also have a variety of color types: individuals in the northern part of their range are more likely to have brown bodies with a white mask, while those in the south are more likely to have orange to dark brown bodies and no mask.
• Sometimes pairs of different colors have common offspring.

• Río Mayo titis are diurnal, like most New World Monkeys. They wake up with the sun and stay active until sunset.
• They have two main feeding periods throughout the day with a break in between and spend most of their waking hours eating.
• They are arboreal and quadrupedal and generally move with short hops. They are rarely seen on the forest floor.
• Río Mayo titis have been described as somewhat temperamental and hesitant and don’t tend to be inquisitive.
• Babies are born a uniform agouti color and begin to develop their white mask, if they have one, at around 5 weeks.