New information about the distribution of Callicebus (Pithecidae, Primates) in northern Beni Department, Bolivia

Abstract

Callicebus is one of the most diverse genera of primate in the Neotropics, including 30 recognized species of titi monkeys (Van Roosmalen et al. 2002, Wallace et al. 2006, Defler et al. 2010). In Bolivia, the distribution, diet and behavior of titi monkeysis poorly known and even the number and identity of species is unclear (Wallace et al. 2006, Martinez & Wallace 2010). Two of the six species of titi monkeys recognized for Bolivia are endemic: Callicebus modestus (Beni titi monkey) and Callicebus olallae (Olallae’s titi monkey), both locally named as “lucachis” (Hershkovitz 1988, Anderson 1997, Rylands et al. 2000, Van Roosmalen et al. 2002, Wallace et al. 2006, Martinez & Wallace 2010). Both species were categorized as Endangered (Veiga et al. 2008 a, b, Tarifa & Aguirre 2009).