Graybellied night monkey

Aotus lemurinus

SUBFAMILY

Aotinae

TAXONOMY

Aotus lemurinus (I. Geoffroy, 1843), Quindio, Dept. of Caldas, Colombia. Originally included in the species Aotus trivirgatus, the gray-bellied night monkey is now allocated to the separate species Aotus lemurinus, containing 4 subspecies (lemurinus, brumbacki, griseimembra, and zonalis). It is quite possible that one or more of these subspecies may actually be a full species, and that one may be the same as A. lemurinus lemurinus.

OTHER COMMON NAMES

English: Gray-bellied owl monkey, gray-bellied douroucouli; French: Douroucouli a ventre gris; German: Graubauchnachtaffe.

PHYSICAL CHARACTERISTICS

Fur gray to buff-agouti dorsally and yellow to pale orange ven-trally. Because of previous uncertainty over taxonomy, no reliable data on body dimensions are available for this species alone. Body mass: males 2 1b (920 g); females 1 lb 15 oz (875 g).

DISTRIBUTION

Panama, northern Colombia, and northwestern Venezuela.

Gray Bellied Night Monkey

HABITAT

Predominantly evergreen tropical rainforest, including montane forest.

BEHAVIOR

Nocturnal. Little-studied in the wild. FEEDING ECOLOGY AND DIET

Feeds primarily on fruits with a supplement of arthropods (mainly insects).

REPRODUCTIVE BIOLOGY

Presumably monogamous. Ovarian cycle 15-16 days long; gestation period approximately 133 days. Single births are typical, but twins often occur.

CONSERVATION STATUS

Listed as Vulnerable.

SIGNIFICANCE TO HUMANS

Occasionally hunted for food. Used quite extensively for medical research. ♦

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