Alouatta arctoidea (ursine howler)
Alouatta belzebul (red-handed howler monkey) (Vulnerable) (Attributes)
Alouatta caraya (black howler monkey) (Attributes)
Alouatta discolor (Spix's red-handed howler) (Vulnerable)
Alouatta guariba (Brown Howler Monkey) (Vulnerable) (Attributes)
Alouatta macconnelli (Guyanan red howler) (Attributes)
Alouatta mauroi
Alouatta nigerrima (Amazon black howler) (Attributes)
Alouatta palliata (mantled howler monkey) (Vulnerable) (Attributes)
Alouatta pigra (Mexican black howler monkey) (Endangered) (Attributes)
Alouatta puruensis (Purús red howler) (Vulnerable)
Alouatta sara (Bolivian red howler monkey) (Attributes)
Alouatta seniculus (red howler monkey) (Attributes)
Alouatta ululata (Maranh�o Red-handed Howler Monkey) (Endangered)