The baby male was born July 11 and has yet to be named. He and his mother, Pumpkin, 16, have been "bonding well," according to the zoo. Pumpkin is helped by other females in the family, including her daughter, Orla, as part of the monkey's practice of "alloparenting." The father of both is Cartman, 15.
The baby was born with an orange coat, which will fade to black in three to six months.
Tiffany Ruddle, a media relations manager at the zoo, said the baby may be named in a few ways: a friend of the zoo may ask to select the name, a keeper may choose an animal's name or the zoo may run a poll.
"We always try to name the animal something that would be relative to its native country," Ruddle said. "We'll see. It will be reported on our social media."
The monkeys may be seen from 10 a.m. to 5 p.m. weekdays and 10 a.m. to 6:30 p.m. weekends and holidays at the Helen C. Brach Primate House.
Francois' langurs, which are endangered, are native to China and Vietnam but have suffered due to habitat loss.