Coquerel's Sifaka (Propithecus coquereli) is one of nine known species of sifaka all of which are found on the island of Madagascar they are very genetically distinct from other lemurs as a group. Coquerel's Sifakas are very matriarchal and even sub-adult females are dominant over males. Females have preferential access to food sources and males will wait until the group of females have moved on from a tree before moving into feed. They also have an interesting way of getting around on the ground in that they jump forward like kangaroos. In some regions of Madagascar killing and eating these sifakas is considered a fady (taboo) but I can't seem to find the reason why which is too bad I have a feeling there is a story there.