All About Indri Indri Lemurs Family: Indriidae, Genus: Indri, Species: indri. Indri indris are the largest living lemurs. They range from 5.8 to 8.8 kg (about 12 to 20 lbs) and live in socially monogamous groups of two to five. They are folivorous creatures, meaning their main source of food is leaves, but they also…