Account
What the sources say about this taxon, as written.
discussion · 
Plazi
There are two separate forms of 7. wallacei, the “Tinombo acoustic form” (northern) and the “Uwemanje acoustic form” southern). They differ in body size but are alike in color, dimensions of the tail tuft, vocalizations, and genetic composition. The two forms are separated by the Palu Bay, the city of Palu, and the southern parts of the Isthmus of Palu, an area now inhabited by the parapatric species T. dentatus . In the north, it borders the yet undescribed form known as the “Sejoli acoustic form,” and in the south it borders T. dentatus . Monotypic.
description · Plazi
Descriptive notes. Head-body 11.3-12.4 cm, tail 23.6-26.6 cm; weight 100-124 ¢ (males) and 84-116 g (females). Male Wallace's Tarsiers are a little larger than females. The ventrum is off-white, but the pelage is otherwise mottled yellowish brown. Mottling is due to a gray undercoat and scattered patches of light-gray to black hair tips. It has a conspicuous copper-colored throat. There are distinct yellow to copper-colored patches above and below the eyes; in most specimens, they form nearly complete eyerings (a trait that it shares with some specimens of the Lariang Tarsier, 7. lariang ). The paralabial pale zone varies in size and whiteness. As is found in other Central Sulawesi species, Wallace’s Tarsier has a dark tail with a thick and long tail tuft. In the field,it can be distinguished by its duet song, its yellow-brown pelage, and the copper-colored throat. Genetic analyses have shown that Y-chromosomal and mtDNA sequences and also microsatellite allelic frequencies are diagnostic.