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Sunday, 23 April, 2000, 20:25 GMT 21:25 UK
New monkey species discovered
Manicore Marmoset
Manicore Marmoset - named after a Brazilian river

A Dutch zoologist has discovered two new species of monkey in a remote corner of Brazil's Amazon rain forest.

The squirrel-sized monkeys were found by Marc Von Roosmalen about 190 miles (300 kilometres) from Manaus, where local residents kept them as pets.

One of the new monkeys is the Callithrix Manicorensis, or Manicore Marmoset. It has a silvery white upper body, a light gray cap on its head, yellow to orange underparts and a black tail.

The other, Callithrix Acariensis, or Acari Marmoset, has a snowy white upper body and underparts, a gray back with a stripe running to the knee and a black tail with a bright orange tip.

An average adult of both species measures nine inches (22 cm) with a 15-inch (38 cm) tail, and weighs around 12 ounces (350 grams).

Monkeys named after rivers

The monkeys are named after the Manicore and Acari rivers - tributaries of the Amazon.


Acari Marmoset
Natural barriers helped keep the species isolated
The discovery was reported by Conservation International.

Roosmalen, a Dutch primatologist at Brazil's Amazon National Research Institute, says he has found 17 more monkeys he believes are new to science, as well as five new birds and two plants.

"I have to stop doing surveys because I keep coming up with something else and I don't have time to write them all up," he said.

Formal scientific descriptions of the new monkeys are to be published in the scientific journal Neotropical Primates in the next few weeks, the Associated Press reports.

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03 Mar 00 | UK
Park culls monkey colony
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