Lucas Bustamante / Labiated rainfrog (Pristimantis labiosus) feeding on spider prey, Mashpi, Pichincha, Ecuador

Lucas Bustamante / Moss rainfrog (Pristimantis eriphus) siting on leaf, Cosango, Napo Ecuador, Vulnerable species.

Bert Willaert / Rio Jatuntianhua Robber Frog (Pristimantis eriphus) male on a leaf. Ecuador, Vulnerable species.

Morley Read / Frog (Pristimantis omeviridis), Orellana Province, Ecuadorian Amazon. (non-ex)

Morley Read / Frog (Pristimantis omeviridis), Orellana Province, Ecuadorian Amazon. (non-ex)

Morley Read / Espada's robber frog (Pristimantis galdi), Cordillera del Condor, Ecuador. (non-ex)

Guy Edwardes / Bloody robber frog (Pristimantis cruentus), Bosque de Paz, Costa Rica

Thomas Marent / Canelos Robber Frog (Pristimantis acuminatus), Putumayo, Colombia

Thomas Marent / Banded Robber Frog (Pristimantis taeniatus), Putumayo, Colombia

Lucas Bustamante / Tambococha rain frog (Pristimantis omeviridis) artistic view of eye, Yasuni National Park, Orellana, Ecuador.

Lucas Bustamante / Ornate rainfrog (Pristimantis ornatissimus) on leaf, Otongachi, Santo Domingo de los Tsachilas, Ecuador, Vulnerable species.

Lucas Bustamante / Pinnochio rainfrog (Pristimantis appendiculatus) on twig, Mindo, Pichincha, Ecuador.