Species: Propithecus diadema
Common Name: Diademed Sifaka
The Indriinae are composed of eight genera, of which four are extinct. The genus Propithecus contains three species, with Propithecus diadema being the larger. Currently, Propithecus diadema is divided into four subspecies: Propithecus diadema diadema, Propithecus diadema edwardsi, Propithecus diadema candidus, and Propithecus diadema perrieri distinguished mainly on the basis of pelage.
Diademed Sifaka live in rain forests on the eastern side of Madagascar. They are vertical clingers and leapers and have long legs and tails. They live in moderate sized groups of from 3-9 individuals. The males regularly change groups and, consequently, there is a lot of male-male competition with actual mating being based on position in a dominance hierarchy. They feed mainly on leaves, flowers, fruits, and young shoots.
As always, here is a picture of the skull: