The Good News: A New Monkey Is Discovered; The Bad News: It Is Already at Risk

Construction projects could soon harm the Amazonian habitats of a tiny tamarin

Join Our Community of Science Lovers!


On supporting science journalism

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.


A new monkey is swinging through the Amazon rainforests—at least it's new to scientists. Unfortunately, the future of this mini monkey, weighing in at just 7.5 ounces (213 grams) and nine inches (23 centimeters) tall, is already threatened by human development.

The discovery of Mura's saddleback tamarin was announced today by the Wildlife Conservation Society (WCS) in New York City and published online in the International Journal of Primatology.

"We keep finding new species of plants, insects and butterflies. But it is more and more difficult to find newer species of mammals," says Avecita Chicchón, director of WCS's Latin American and Caribbean Program, unable to suppress her excitement about the new rabbit-size primate. "It is our relative, albeit a little more distant than the gorilla. Looking into its eyes is like looking in the mirror."

The new subspecies of saddleback tamarin is gray and brown in color, with a mottled back and long tail. It is named for the Mura Indians who populate the remote Purus and Madeira river basins where the monkey lives. At this point, scientists have no way of knowing just how many roam the region.

This portion of Brazil is also home to several development projects, including a section of major highway currently being paved through parts of the Amazon's approximately  2.7 million square miles (seven million square kilometers) of tropical rainforest. Construction has also begun on two hydroelectric dams, with a proposed gas pipeline likely close behind.

"These are a significant threat to wildlife that are not even documented," Chicchón says. She advocates the need for more thorough calculations of costs and benefits—for the environment, the people and the wildlife—before these kinds of projects are carried out.

Although the monkey's discovery likely won't stave off the development, Chicchón believes that it will "help us highlight the need to keep doing explorations and to document the diversity of life in the Amazon—the last wilderness on Earth."

It’s Time to Stand Up for Science

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in that two-century history.

I’ve been a Scientific American subscriber since I was 12 years old, and it helped shape the way I look at the world. SciAm always educates and delights me, and inspires a sense of awe for our vast, beautiful universe. I hope it does that for you, too.

If you subscribe to Scientific American, you help ensure that our coverage is centered on meaningful research and discovery; that we have the resources to report on the decisions that threaten labs across the U.S.; and that we support both budding and working scientists at a time when the value of science itself too often goes unrecognized.

In return, you get essential news, captivating podcasts, brilliant infographics, can't-miss newsletters, must-watch videos, challenging games, and the science world's best writing and reporting. You can even gift someone a subscription.

There has never been a more important time for us to stand up and show why science matters. I hope you’ll support us in that mission.

Thank you,

David M. Ewalt, Editor in Chief, Scientific American

Subscribe