Monkey <I>Callicebus donacophilus</I> (IMAGE) Johns Hopkins Medicine Caption An artist's sketch of the monkey Callicebus donacophilus, a living species closely related to X. mcgregori. Credit Alcide Dessalines d'Orbigny (Voyage dans l'Amérique méridionale), via <a href="https://commons.wikimedia.org/wiki/File:Callicebus_donacophilus_1847.jpg" target="_blank">Wikimedia Commons</a> Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.