Primate Watching
Howler Monkeys | Genus Alouatta
A. arctoidea | Ursine Howler
A. belzebul | Red-handed Howler
A. discolor | Spix's Red-handed Howler
A. guariba | Brown Howler
A. nigerrima | Black Howler
A. macconnelli | Guianan Red Howler
A. pigra | Yucatán Black Howler
A. ululata | Maranhão Red-handed Howler
A. sara | Bolivian Red Howler
A. seniculus | Colombian Red Howler
Photo & illustration references
A. arctoidea
A. belzebul
A. caraya
A. seniculus
A. discolor
A. guariba
A. macconnelli
A. nigerrima
A. ululata
A. palliata
A. pigra
A. sara
Both © Miguelrangeljr
© Ric
© Sean McCann
All by Cruz Lima, Eladio da, and Agnes Chagas. 1945. Mammals of Amazonia. Rio de Janeiro: Belém do Pará. Public domain. Accessed via the Nash Collection of Primates in Art and Illustration. Local Identifiers: PCLArts.PCLA1009.bib [A. belzebul], PCLArts.PCLA1012.bib [A. nigerrima], PCLArts.PCLA1010.bib [A. ululata]
© Adam Hermans