Knudsen's Thin-toed Frog

About the Knudsen's Thin-toed Frog

Leptodactylus knudseni, known commonly as Knudsen's frog, is a species of frog in the family Leptodactylidae. It is found in the greater Amazon basin. The first description of the species was published by W. Ronald Heyer in 1972.

The specific name, knudseni, is in honor of Jens W. Knudsen, who Heyer called "the most important influence in my decision to become a professional biologist" and said "continues to encourage my research efforts." The holotype was a juvenile female, with Heyer stating that he found the frog so distinctive that he preferred to describe it immediately rather than waiting for an adult specimen. It was collected from a decaying log in August 1970 by Heyer and Keith A. Berven, at an elevation of 260 m (850 ft), in Napo, Ecuador.

Usual adult snout–vent lengths range between 94–170 mm (3.7–6.7 in) for males and 102.7–154 mm (4.04–6.06 in) for females. They have smooth bodies and wide heads, are orange-brown or greenish on top and have a white belly. They have triangular dark markings on their lips, light-colored lines above the lips, black lines from the nose going over each eye, markings between the eyes.The iris of... Wikipedia →