The "orange shanks" on this frog are on the hidden surfaces of the calves, where they are not apparent in this picture. But the black-and-white thighs and single white spot under each eye are also clues to its identity. Matt Cage has better pictures of the black-and-white thighs of this particular frog on his website.

My Travelogues and Trip Lists page includes a complete list of the herps I saw in the wild on my 2016 MT Amazon Expeditions trip.