This species has a mostly green body, with light blue patches in some dorsal parts. The eye is yellow with an horizontal black pupil. The disks at the end of the fingers are expanded, featuring a yellowish coloration. The best field mark for identification is the red webbing between its fingers, just like its name suggests. It is mainly nocturnal, hence not commonly seen during the day. It is curious how the skin color of this frog species changes from day to night time. During the day, the color is similar to a turquoise, while in the night the skin turns yellowish.
A friend of mine found an individual on the edge of the trail that leads to the Agami colony at Pacuare Reserve. It was late in the day, so it was still sleeping and let me have a half-hour photoshoot session with it without a single sign of being disturbed. One of the shots was taken only using natural light during a fairly strong wind that constantly moved the leaf up and down. I thought of artificially creating the night, although the frog was still sleeping. To create the black background on the second picture, I lighted the frog from very close using a bike lantern. The light did not need to be very powerful, since at macro distances the difference between the light intensity at the subject and the background can be exaggerated.
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