Alouatta seniculus have the widest geographical distribution of all the New World primates. Red howler monkeys range throughout the northern half of South. Genus, Alouatta Lacépède, Species, Alouatta seniculus (Linnaeus, ) – red howler monkey, Colombian Red Howler, Venezuelan Red Howler. Genus: Alouatta Species: A. macconnelli, A. sara, A. seniculus. Subspecies: A. seniculus arctoidea, A. seniculus juara, A. seniculus seniculus. Other names: A.

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Its long, prehensile tail also assists it by providing both support and grasping abilities. Reviewed by Carolyn Crockett. Due to their relatively large size, A.

Brown woolly monkey L. Females have a body length of centimeters; males, which are larger, have a body length of cm.

Alouatta seniculus

We are not responsible for the content of linked sites, nor does inclusion of a link imply endorsement of the views expressed in that content. In addition, their extremely deep lower jaw bones aid red howlers in chewing. Lower strata, including those close to the ground, are sometimes used for feeding but the species is frequently and most often found in higher forest strata. Facts on File Publications, NY.

When sympatric with other deniculus, howlers prefer higher strata than the other species in the habitat Soini ; Yoneda ; Peres Positive Due to their relatively large size, A. Males and females often form consortships, an unusually close spatial relationship, before any sexual exchange has begun.


Red howlers, a diurnal species, show differences in daily activities between the dry and wet seasons. Red howler monkeys live in relatively large social groups, consisting of approximately 10 individuals, with only one or perhaps two of the individuals being males. Brown howling monkey Alouatta guariba.

Venezuelan red howler

Alouatta seniculus appears to breed throughout the year. Conservation Status Although several other Alouatta species are endangered, A.

Red-handed howler monkey Alouatta belzebul. Red howler monkeys have overcome problems that are usually associated with having leaves as a principle food source, including their specialized jaw and stomach structures. Synapomorphy of the Bilateria. MacDonald, Nowak, In addition, they eat sugary fruits and flowers senicukus these are available, but can sustain themselves for weeks at a time on only leaves, providing these are high in quality.

While ADW staff and contributors provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control. Average weights for males can range between 6 and 7. In addition, he folds both A.

The altitudinal limit of the red howler distribution is m By killing infants in a newly invaded troop, a male can mate quickly and ensure that the new offspring of the group are his own. Biogeographic Regions neotropical native Habitat Terrestrial Biomes forest rainforest Physical Description Alouatta seniculus are slightly sexually dimorphic.

Usually the group will simultaneously defecate from the same tree or group of trees, a behavior that usually occurs in the morning after waking up and at midday after the resting period Braza et al.


International Union for Conservation of Nature. Bolivian red howlers Alouatta sara are brick red, with slightly darker and more reddish limbs, head and base of tail. The species is also an important seed dispersal mechanism for the plants which it consumes Andresen AfricachimpanzeeconservationfilmIn the Fieldlab chimpsLiberiaPrimatesprimatologyrehabilitationtrue storywildlifewildlife filmWildscreen Festival.

Alouatta seniculus also improve their digestive efficiency by feeding primarily on tender young leaves aouatta on some species of leaves that are unusually nutritious. Share on Facebook Tweet Send email.

IUCN Red List of Threatened Species

The mating behavior of red howlers is another alouata aspect of their social interactions. Team WILD, an elite squadron of science superheroes, needs your help! Mantled howler monkey Alouatta palliata. The tail is prehensile and is somewhat longer than the head and body together, averaging The Animal Diversity Web is an educational resource written largely by and for college students. These howler monkeys are aloyatta to eat the fibrous leaves due to the structural aspects of their dentition.