Silky Sifaka
(http://i33.tinypic.com/352qb1v.jpg)
Found only in northeastern Madagascar, the Silky Sifaka is one of the world's 25 most endangered primates, with reports of population levels being as low as 100 and as high as 1000 individuals. The main threats come from (you guessed it) habitat loss due to logging and conversion of land to agriculture. Hunting for food is also an issue, as the Silky Sifaka has no local taboo around it prohibiting it eating, unlike some other lemur species.