Weddell's saddle-back tamarin

Weddell's saddle-back tamarin (Leontocebus weddelli) is a small monkey of South America that lives in Brazil, Bolivia and Peru, with its type locality in Bolivia. It was formerly considered a subspecies of the brown-mantled tamarin. Three subspecies are listed: the nominate form, Crandall's saddle-back tamarin and the white-mantled tamarin. Males have a head and body length of about 190 millimetres and females about 197 millimetres, the tail is 250 to 300 millimetres long, and both sexes weigh about 358 grams. It eats fruit, gums, nectar, insects and other small animals. Its groups take several forms, from single adult male or female groups to multi-male, multi-female groups, and females sometimes stay in their natal group. It associates with the emperor tamarin, the red-bellied tamarin and Goeldi's marmoset. The IUCN rates it Least Concern.