The Genus Presbytes includes a group of Old World monkey species found in Southeast Asia. These primates are characterized by their long tails, prominent eyebrows, and unique facial markings. While the name Genus Presbytes is widely recognized among scientists and researchers, there are several synonyms used to refer to these primates in various regions. For example, in Indonesia, Presbytes is commonly known as the "surili" or "kelawar" while in Malaysia it's called the "lutung." Other synonyms for Genus Presbytes include the Mitred Monkey, Spectacled Langur, and Banded Leaf Monkey. Despite the various names, these primates face threats such as habitat loss, hunting, and the pet trade, making conservation efforts essential for their survival.