Callithrix geoffroyi

White-fronted marmosets are small primates measuring about 200 mm in length. Females usually weigh about 190 grams, and males weigh about 230 to 350 grams. Their bodies are blackish brown and their tails are ringed with grey and black bands. Adults have a white face and throat. Juveniles do not have white markings until they are about five months old.