The northern muriqui (Brachyteles hypoxanthus) and the southern muriqui (B. arachnoides) are the two species of the largest genus of primates in the Americas. A study published in the Journal for Nature Conservation estimates that their habitat will be reduced by 44% and 61%, respectively, by 2090. In São Paulo, Brazil, the northern muriqui is expected to lose its entire climatically suitable area by the end of the century.