Francois' langur in exhibit

Francois’ Langur

Scientific Name

Trachypithecus francoisi

Class

Mammalia

Order

Primates

Range

Southern Guangxi province of China, northern Vietnam, and west central Laos

Habitat

Forests with limestone outcrops

Estimated Wild Population

n/a
Francois' langur in exhibit
IUCN Conservation Status: Endangered IUCN Conservation Status: Endangered

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Physical Description

Adult Francois' langurs have black fur with a white stripe stretching from ear to ear acros their jawline, as well as a black crest atop their head. Young langurs are orange at birth, which may encourage adult females to care for and keep track of them. These primates, which feed primarily on leaves, have a multi-chambered stomach that helps them get the most out of their low-nutrient diet. Special bacteria lining their stomach also aid the process.

Interesting Fact 1

Francois' langurs are threatened by logging, agriculture, hunting, and the illegal pet trade.

Interesting Fact 2

Females assist in caring for other langurs’ offspring, a behavior called alloparenting or “aunting.”

Interesting Fact 3

Males define and defend their territory with hoarse vocalizations.

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Species Survival Plan®

We cooperate with other members of the Association of Zoos and Aquariums to manage the zoo population of this species through a Species Survival Plan®.

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