The Genus Tarsius, commonly known as tarsiers, are primates that are found in Southeast Asia. These fascinating creatures are known for their large eyes, elongated legs, and small size. While the term Genus Tarsius is specific to this group of primates, there are several synonyms that are often used interchangeably. These include the terms spectral tarsier, Horsfield's tarsier, Western tarsier, and Eastern tarsier. Each of these terms refers to a specific species or subspecies within the Genus Tarsius family. Overall, these synonyms help to provide a better understanding of the diversity and complexity of these unique primates.