The two monkeys, which were discovered in northwestern Brazil, about 1, 600 miles northwest of Rio de Janeiro, are the Callithrix Manicorensis, or Manicore Marmoset and the Callithrix Acariensis, or Acari Marmoset.
22.
In general, " Callithrix " and " Mico " species tend to form larger groups and live within smaller home ranges, and thus live in higher population densities, than other Callitrichids.
23.
It has been observed to squabble with a common marmoset ( " Callithrix jacchus " ) in the undergrowth over food flushed by an army ant column, but this was during the dry season when fruits are scarce.
24.
Omnivorous mammals as small as the common marmoset ( " Callithrix jacchus " ) will eagerly plunder yellow-bellied elaenia nests in the undergrowth perhaps more often during the dry season when fruits are scarce despite the birds'attempts to defend their offspring.
25.
Even omnivorous mammals as small as the common marmoset ( " Callithrix jacchus " ) will eagerly plunder tropical gnatcatcher nests in the undergrowth perhaps more often during the dry season when fruits are scarce despite the birds'attempts to defend their offspring.
26.
Their intestines also have an enlarged, complex cecum that allows them to digest gums more efficiently than most other animals . " Callithrix "'ability to feed on exudates allows it to survive in areas where fruit is highly seasonal or not readily available.
27.
If feeding ecology could have such profound effects on the shape of the anterior dentition, then convergent evolution might explain the similarities seen between the compressed lower incisors of the lemuriform toothcomb and the exudate feeding adaptations in the genus " Callithrix " ( a type of marmoset ).
28.
But these statistics can vary dramatically among various " Callithrix " species . " C . jacchus " and " C . pencillata " typically have home territories of less than 10 hectares, while other " Callithrix " species tend to have larger home territories.
29.
But these statistics can vary dramatically among various " Callithrix " species . " C . jacchus " and " C . pencillata " typically have home territories of less than 10 hectares, while other " Callithrix " species tend to have larger home territories.
30.
However, subsequent separation of the " argentata " and " jacchus " species groups into different genera ( the " argentata " group having been moved to " Mico " ) justifies maintaining a separate genus for the pygmy marmoset, as " Callithrix " is no longer paraphyletic.
