What is the common name for primates in the family Tarsiidae?

The common name for primates in the family Tarsiidae is tarsiers.

Tarsiers are small, mostly nocturnal haplorhine primates native to Maritime Southeast Asia, including Indonesia, Malaysia, Brunei, and the Philippines. The family is the only living family in the infraorder Tarsiiformes. Modern classifications generally place living tarsiers in three genera: Carlito, Cephalopachus, and Tarsius.

Their name comes from the elongated tarsus bones in their feet. These long ankle and foot bones help tarsiers cling to vertical surfaces and leap between branches. Their huge eyes are another signature feature: each eyeball is about 16 millimetres across and can be as large as the animal’s brain.

Tarsiers are unusual among living primates because they are entirely carnivorous, feeding mainly on insects but also taking small vertebrates such as lizards, birds, and bats. They are sometimes confused with lemurs or lorises because all are small, wide-eyed nocturnal primates, but tarsiers belong to a separate evolutionary branch. Fossil evidence shows that tarsiiform primates existed at least 45 million years ago.