Scientists discover three new species of primates

Scientists working in Madagascar announced yesterday they have discovered three previously unknown species of mouse lemurs, the world's smallest primate.

Lemurs are the most primitive primates and are among the world's most endangered species. The newly discovered lemurs represent a small but encouraging sign to conservationists.

Madagascar is the world's only home to about 40 species of lemurs, including two previously known species of mouse lemurs.

An international team confirmed the new varieties by genetic tests as well as by small differences in their skulls, teeth and other physical characteristics.

"It's incredibly rare to discover a new species of primate, let alone three new species," said Steven Goodman of the Field Museum of Natural History in Chicago, who participated in the study. Other participants were from Germany and Madagascar.

The three newly discovered species inhabit only the dry, dense forests along the island's west coast. They are about the size of a chipmunk and weigh a few ounces. They eat beetles, fruit and plants. They are active only at night.

The scientists said they also found what they believe are two more previously unknown species of mouse lemur, but the determination must be approved by an international panel of primate experts.