Paul Williams / Spectral tarsier (Tarsius tarsier) returning to sleep in fig tree after a night hunting, Tangkoko, Sulawesi, Indonesia.

Chien Lee / Horsfield's Tarsier (Cephalopachus bancanus borneanus), Kuching, Malaysia

Juergen Freund / Spectral Tarsier (Tarsius tarsier) feeding on preying mantis in strangler fig tree, Tangkoko National Park, North Sulawesi, Indonesia

Juergen Freund / Spectral Tarsier (Tarsius tarsier) jumping on a grasshopper, Tangkoko National Park, North Sulawesi, Indonesia

Chien Lee / Spectral Tarsier (Tarsius tarsier), Tangkoko Nature Reserve, Sulawesi, Indonesia

Solvin Zankl / Spectral tarsier {Tarsius tarsier / spectrum / fuscus} catching insect, Tangkoko Rainforest, Sulawesi Indonesia

Anup Shah / Spectral tarsier (Tarsius tarsier / spectrum / fuscus) native to Sulawesi, Indonesia, captive

Tim Fitzharris / Philippine Tarsier (Tarsius syrichta), Philippines

Daniel Heuclin / Gursky's spectral tarsier (Tarsius spectrumgurskyae) North Sulawesi

Daniel Heuclin / Gursky's spectral tarsier (Tarsius spectrumgurskyae) North Sulawesi

Daniel Heuclin / Gursky's spectral tarsier (Tarsius spectrumgurskyae) North Sulawesi

Daniel Heuclin / Horsfield's tarsier / Western tarsier ( Tarsius bancanus ssp. saltator) Belitung Island, Sumatra, Indonesia. Endemic.