The red howlers are five species of howler monkeys that used to be considered conspecific:
Colombian red howler or Venezuelan red howler (Alouatta seniculus) – northwestern South America Bolivian red howler (Alouatta sara) – Santa Cruz Department, Bolivia Guyanan red howler (Alouatta macconnelli) – northeastern South America Juruá red howler (Alouatta juara) – southeastern Amazon basin Purus red howler (Alouatta puruensis) – southeastern Amazon basin
