Lucas Bustamante / Lesser Clownfrogs (Dendropsophus parviceps) with their eggs. Sumaco National Park, Napo, Ecuador

Thomas Marent / Sarayacu Treefrog (Dendropsophus sarayacuensis), Leticia, Colombia

Konrad Wothe / Sarayacu treefrog (Dendropsophus parviceps) in lowland rainforest, Panguana Reserve, Huanuca province, Amazon basin, Peru.

Pete Oxford / Shreve's Sarayacu Treefrog (Hyla sarayacuensis), Amazon rainforest, Ecuador

Morley Read / Male Sarayacu treefrog (Dendropsophus sarayacuensis) calling in rainforest understory, Napo province, Ecuador.

Morley Read / Metamorphosing froglet of the Sarayacu treefrog (Dendropsophus sarayacuensis) still with tail. Yasuni National Park, Ecuador, August.

Morley Read / Sarayacu treefrog (Dendropsophus sarayacuensis) male, calling, with partially inflated vocal sac. Yasuni National Park, Ecuador, August 2018.