Redshanked douc langur

Pygathrix nemaeus

SUBFAMILY

Colobinae

TAXONOMY

Pygathrix nemaeus (Linnaeus, 1771), Cochin-China (Indochina). Two subspecies were originally recognized in this species, but they have been raised to the rank of separate species, the other being Pygathrix nigripes. A third species, Pygathrix cinerea, was described only in 1997.

OTHER COMMON NAMES

French: Rhinopitheque douc du nord; German: Nördlicher Kleideraffe; Spanish: Mono pigatrix.

PHYSICAL CHARACTERISTICS

The douc langurs are probably the most colorful leaf-monkey species. In the red-shanked douc langur, the fur is grizzled medium gray dorsally and lighter gray ventrally. There is a fringe of black hair across the crown, and there are long, white

cheek whiskers. The eyes slant downwards towards the nose. Around the eyes and nose, the face is yellow-brown, contrasting with a distinctive white muzzle. The hands and feet are black, whereas the forearms and wrists are covered with white hair. The thighs are black, while the lower parts of the legs are reddish-brown. There is moderate sexual dimorphism in body size. Head and body length: 23.5 in (58.5 cm) for males and 24 in (60 cm) for females; tail length: 27 in (68 cm) for males and 24 in (60 cm) for females. Body mass: 24 lb 4 oz (11.0 kg) for males and 18 lb 10 oz (8.45 kg) for females.

DISTRIBUTION

Occurs throughout Laos and in the northern part of Vietnam. HABITAT

Inhabits primary and secondary evergreen rainforest. BEHAVIOR

Diurnal and essentially arboreal. Lives in multimale groups containing up to two dozen individuals. Individuals of both sexes migrate from the natal group on reaching maturity.

FEEDING ECOLOGY AND DIET

Eats leaves, buds, flowers, fruits, and seeds from a wide variety of tree species.

REPRODUCTIVE BIOLOGY

Polygynous. Typically have single births. Gestation period 210 days.

CONSERVATION STATUS

Listed as Endangered.

SIGNIFICANCE TO HUMANS Often hunted for bushmeat. ♦

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