Osteocephalus yasuni

The Osteocephalus yasuni is a frog in the family Hylidae. It lives in Ecuador between the Rio Napo and the Rio Yasuni. It also lives in Peru and Colombia. Scientists have seen it between 180 and 250 meters above sea level.
The adult male frog is 44–55.7 mm long from nose to rear end and the adult female frog 42.6–61.9 mm. The skin on the adult frog's back is the color of coffee with darker marks. The skin on the tops of the feet is also the color of coffee with darker stripes. The belly of the aduly male frog can be bright yellow or cream yellow. The belly of the adult female frog is the color of cream. The iris of the eye is bronze in color with black marks. It is possible to see the bones of the feet through the skin: the bones are white in color.
Young frogs have bright yellow color in between their toes and on their bellies and necks. Their bones are green in color.
This frog eats crickets and caterpillars.
Scientists named this frog after the Yasuni National Park, where they found the first sample.