Panamanian night monkey

The Panamanian night monkey, Aotus zonalis, also called the Chocoan night monkey, is a night monkey of Panama and the Choco region of Colombia that was formerly counted as a subspecies of the gray-bellied night monkey. Males weigh about 890 grams and females about 920 grams, with a grayish to reddish brown back, a yellow belly and dark hands and feet. Unlike most nocturnal animals its eyes lack a reflective layer, the tapetum lucidum. It is arboreal and nocturnal, living in territorial groups of two to six animals in forest, secondary growth and coffee plantations, and on Barro Colorado Island its diet was found to be about 65 percent fruit, 30 percent leaves and 5 percent insects. Pairs are monogamous and the male carries the infant from its first days. Because its nocturnal habits make it harder to see than other Panamanian monkeys, it is less often seen by tourists.