# New howler monkey species discovery in the Amazon

> Developing situation record from CLSTR: https://clstr.news/situations/new-howler-monkey-species-discovery-in-the-amazon
> Updated: 2026-11-08T10:26:27.000Z. Sources: 2. Developments: 2.

An international research team, led by the University of Salford, has identified two new species of howler monkey in the Amazon rainforest: the Mato Grosso red howler monkey (Alouatta matogrossensis) and the Pantepui red howler monkey (Alouatta iroi). Published in the journal Communications Biology, the study marks the first new descriptions within this genus in over 80 years.

The discovery was achieved through genomic analysis and morphological comparisons, allowing scientists to distinguish these primates from similar species. Researchers noted that these findings serve as a conservation warning, as the populations face an imminent risk of extinction due to advancing deforestation and habitat loss.

## Timeline

### 2026-11-08: Two new howler monkey species discovered in the Amazon

Genetic analysis by University of Salford researchers has identified two new howler monkey species in the Amazon, marking the first such discovery in 84 years.

2 sources. https://clstr.news/cluster/two-new-howler-monkey-species-discovered-in-the-amazon

### 2026-11-02: Scientists identify two new howler monkey species in the Amazon

Researchers have discovered two new howler monkey species in the Amazon, the Mato Grosso red howler and the Pantepui red howler, warning of extinction risks due to deforestation.

2 sources. https://clstr.news/cluster/scientists-identify-two-new-howler-monkey-species-in-the-amazon

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Cite as: New howler monkey species discovery in the Amazon. CLSTR, https://clstr.news/situations/new-howler-monkey-species-discovery-in-the-amazon