- Note: (Syn. Alouatta belzebul ululata). Whereas Alouatta ululata Elliot, 1912 was considered as a synonyms of Alouatta belzebul, Gregorin (2006) placed it as distinct species, followed by IUCN
Media in category "Alouatta ululata"
This category contains only the following file.
- Maranhao Red-handed Howler area.png 212 × 319; 4 KB