Sarayacu tree frog

The Sarayacu tree frog or orange-shanked tree frog ("Dendropsophus parviceps") is a frog that lives in much of eastern South America, in Brazil, Venezuela, Peru, Ecuador, Colombia, and Bolivia. Scientists have seen it between 180 and 1600 meters above sea level.
The adult male frog is 14.3 to 18.7 mm long from nose to rear end. The adult female frog is 20.3 to 24.4 mm long. This frog changes color over time. It is light bronze with marks during the day and darker in color at night.
The Latin name of this frog, "parviceps" means "small head."