Dian's tarsier is a small primate of central Sulawesi's forests in Indonesia. Its very large eyes and long tail with a tuft of hair at the tip stand out.
It has a round head and very large eyes. Its coat is grayish buff, and most of the tail is bare or sparsely haired, with hair at the tip. Short white hairs border the upper and lower lips.
It rests with group members by day in dense foliage or vines, then moves and hunts at night. Insects are typical tarsier prey, but the specific diet of this species has not been well studied.
An extinction-risk assessment has not been added yet.