A black monkey with a pinkish-orange patch around its mouth was photographed in a Congo forest canopy in 2008, detected 114 times between 2018 and 2022, and only then named Colobus congoensis — by its describers’ count, the fifth African monkey species new to science in 75 years
The Mituku communities along the eastern edge of the range call it kasaba nkoni, the branch shaker. Across…