For decades, the middle Magdalena Valley of Colombia has been a scene of heavy social and civil confict, which have resulted on a sustained and extensive expansion of the agricultural border, dedicatng most lands to extensive catle producton actvites. Such extensive disturbances have led to a progressive loss and isolaton of natural forests of the region, severely threatening biodiversity. A group highly susceptble to local extncton in the middle Magdalena Valley are the large and medium mammals, because they usually require large extensions of habitat with a good degree of connectvity to be able to disperse between fragments. In this sense, it is especially important to identfy the last remnants of habitat that stll persist in the middle Magdalena and that stll are occupied by endemic and threatened mammal species. Therefore, this work confrms the presence of Jaguar Panthera onca and four threatened monkeys, Ateles hybridus (Critcally Endangered), Saguinus leucopus (Endangered), Cebus versicolor (Endangered), and Aotus griseimembra (Vulnerable) inside an isolated remnant of tropical rainforest called “Ciénaga de la Tortuga” in the Magdalena River Valley of the department of Caldas.
Afer 21 years of not having reliable records of Jaguars in the Caldas department, this work renews the hope for conserving this iconic species in the territory and is perhaps the last opportunity to take conservaton actons to prevent the total local extncton of Jaguar in the department. This work also represents the first confirmed records of C. versicolor for Caldas department and the second known records of P. onca and A. hybridus. The records of A. hybridus are also considered the southernmost locality for the species.