Amazon black howler

{{Short description|Species of New World monkey}}

{{Speciesbox

| name = Amazon black howler{{MSW3 Groves|pages=149|id=12100384}}

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Ravetta, A.L. |author2=Sampaio, R. |author3=Rylands, A.B. |author4=Cortés-Ortiz, L. |date=2021 |title=Alouatta nigerrima |volume=2021 |page=e.T136332A190424175 |doi=10.2305/IUCN.UK.2021-1.RLTS.T136332A190424175.en |access-date=19 November 2021}}

| genus = Alouatta

| species = nigerrima

| authority = Lönnberg, 1941

| range_map = Amazon Black Howler area.png

| range_map_caption = Amazon black howler range

}}

The Amazon black howler (Alouatta nigerrima) is a species of howler monkey, a type of New World monkey, endemic to the south-central Amazon in Brazil. Until 2001, most authorities included it as a subspecies (or simply a taxonomically insignificant variation) of the red-handed howler,Groves, C. (2001). Primate Taxonomy. Smithsonian Institution Press. {{ISBN|1-56098-872-X}} though its distinction had already been pointed out much earlier.{{cite journal |last1=da Cruz Lima |first1=E. |year=1945 |title=Mammals of Amazônia |volume=1 |publisher=Contribuições do Museu Paraense Emílio Goeldi de História Natural e Etnografia}} As suggested by its name, it typically appears entirely black.{{cite journal |last1=Gregorin |first1=R. |year=2006 |url=http://www.scielo.br/scielo.php?pid=S0101-81752006000100005&script=sci_arttext |language=pt |title=Taxonomia e variação geográfica das espécies do gênero Alouatta Lacépède (Primates, Atelidae) no Brasil |journal=Rev. Bras. Zool. |volume=23 |issue=1|pages=64–144 |doi=10.1590/S0101-81752006000100005 |doi-access=free }}