All About Diademed Sifaka Lemurs Common name: diademed sifaka. Family: Indriidae, Genus: Propithecus, Species: diadema There are nine species of sifaka lemurs, but the diademed sifaka is the largest and most colorful of its genus. These energetic lemurs weigh anywhere from 6.5 to 7.5 kg (14.3 to 16.5 pounds), and mark their territory by rubbing…