The tiny mouse was captured on Mount Banahaw, a national park in the south-central portion of Luzon Island, only about 50 miles from Manila.

The bright-orange animal has a large head, heavily muscled jaws and powerful teeth that can open hard nuts. It weighs about 15 grams, and has a body length of 3 inches and a tail of four inches. The mammal's whiskers are about eight times as wide as its head, and there is a second set of "whiskers" that arise from a patch at the back edge of each eye.

"Nearly all of the many unique small mammals on Luzon Island are descended from just two species that reached the Philippines from the Asian mainland about 10-15 million years ago," said Lawrence Heaney, Curator of mammals at The Field Museum in Chicago and co-leader of the team.

Heaney has been studying biological diversity in the Philippines for over 20 years, and describes the Philippines as having biological diversity equal to "the Galapagos Islands times 10, with one of the highest concentrations of unique mammals of any place in the world."

Eric Rickart, Curator of vertebrates in the Utah Museum of Natural History, said it was "not related to any of the other rodents" found in the northern Philippines.

The new species was found by a joint team from The Field Museum, the Philippine National Museum, Utah Museum of Natural History, and Laksambuhay Conservation in the Philippines. The team was scouting the mountain, considered a holy site by some Filipino sects, for unusual small mammal species.

According to Danilo Balete, a biologist in the Philippines and co-leader of the team, they captured the tiny mouse several yards above the forest floor on top of a tangle of large vines in an area of regenerating lowland forest. Logging had previously damaged th
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Contact: Greg Borzo
gborzo@fieldmuseum.org
312-665-7106
Field Museum
28-May-2004