How many tarsiers in a group?

qute a few, to say the least Infraorder Tarsiiformes[1] * Family Tarsiidae: tarsiers Genus Tarsius * T. syrichta group Philippine Tarsier, Tarsius syrichta Western or Horsfield's Tarsier, Tarsius bancanus * T. tarsier group Spectral Tarsier, Tarsius tarsier Dian's Tarsier, Tarsius dentatus Lariang Tarsier, Tarsius lariang Peleng Tarsier, Tarsius pelengensis Sangihe Tarsier, Tarsius sangirensis Siau Island Tarsier, Tarsius tumpara[4] ** Pygmy Tarsier, Tarsius pumilus