Aquino's titi monkey

Aquino's titi monkey, Cheracebus aquinoi, is a titi monkey of the family Pitheciidae that was formally described in 2022 by Rengifo and colleagues in the journal Mammal Study, from material collected in Peruvian Amazonia. The Mammal Diversity Database places it in the subfamily Callicebinae and the genus Cheracebus, the group of titis often called widow titis, and records it as a living species found in the wild. Its holotype, catalogued as MUSM 59736, came from a site about 2.5 kilometres northeast of a village in San Juan Bautista district, Maynas province, Loreto region, Peru, and the database lists Peru as its only country of distribution, in the Neotropic realm. It gives the common names Aquino's titi and Aquino's titi monkey and notes that placing the species in Cheracebus is tentative, because some authors treat Cheracebus and Plecturocebus as subgenera of Callicebus. Its IUCN Red List status is recorded as Not Evaluated.