Verreaux's sifaka (Propithecus verreauxi), or the white sifaka, is a medium-sized primate in one of the lemur families, the Indriidae. It lives in Madagascar and can be found in a variety of habitats from rainforest to dry deciduous forests of western Madagascar and the spiny thickets of the south. Its fur is thick and silky and generally white with brown on the sides, top of the head, and on the arms. Like all sifakas, it has a long tail that it uses as a balance when leaping from tree to tree. However, its body is so highly adapted to an arboreal existence, on the ground its only means of locomotion is hopping. The species lives in small troops which forage for food. Anatomy In adulthood, the full head and body length is between . The tail of a fully grown Verreaux's sifaka grows to be between long. In weight, adult females reach on average, and adult males . Verreaux's sifaka has a relatively low, flat braincase. The face is broader than that of most other indriids, but its snout is reduced. This species of sifaka is also distinguished by its unique dentition. Its dental formula is . The upper incisors are very small and are slightly angled inward towards the gap between I1 and I2. In the mandible, Verreaux's sifaka displays the strepsirhine characteristic: the toothcomb. Formed by the procumbent lower incisor and canine, the toothcomb projects past the front margin of the mouth. P. verreauxi also presents the high, shearing molar crests of a folivore, helping to shread the leaves, fruit and flowers that it eats. Postcranially, Verreaux's sifaka has a low intermembral index that ranges from 63-66. It has a broader ribcage than most other prosimians, and has many lumbar vertebrae lending it considerable flexibility. The pelvis is high and narrow and the acetabulum is relatively shallow, also allowing for greater flexibility. Like other indriids, P. verreauxi has a short calcaneus, pointed nails, and slightly webbed hands and feet. Diet Verreaux's sifakas forage for food with their troop, primarily in the morning and late afternoon, so they can rest during the hottest part of the day. They are herbivores; leaves, fruit, bark and flowers are typical components of the diet. However, they are mostly folivorous (leaves represent the majority of the diet over the year, especially in the dry season) and they seem to choose food items based