Melvin Grey / Side-striped palm pit viper (Bothriechis lateralis) adult, Costa Rica

Paul Hobson / Eyelash viper (Bothriechis schlegelii) on branch in rainforest. Costa Rica. 2018.

Magnus Lundgren / Wild Wonders of China / White-lipped pit viper (Trimeresurus albolabris) Lantau Island, Hong Kong, China

Magnus Lundgren / Wild Wonders of China / White-lipped pit viper (Trimeresurus albolabris) Lantau Island, Hong Kong, China

Jen Guyton / Eyelash viper (Bothriechis schlegelii) waiting for prey on the trunk of a tree, La Selva Biological Station, Costa Rica. Small repro only.

Jen Guyton / Eyelash viper (Bothriechis schlegelii) waitingfor prey on tree trunk, La Selva Biological Station, Costa Rica.

Jen Guyton / Eyelash viper (Bothriechis schlegelii) waiting for prey on tree, La Selva Biological Station, Costa Rica.

Lucas Bustamante / Eyelash palm pit viper (Bothriechis schlegelii) with tongue extended, Mindo, Pichincha, Ecuador.

Lucas Bustamante / Eyelash palm pitviper (Bothriechis schlegelii) curled round plant, Canande, Esmeraldas, Ecuador.

Lucas Bustamante / Eyelash palm pitviper (Bothriechis schlegelii) curled round berries on twig, Canande, Esmeraldas, Ecuador.

Lucas Bustamante / Eyelash viper (Bothriechis schlegelii) on twig, Canande, Esmeraldas, Ecuador.

Lucas Bustamante / Eyelash viper (Bothriechis schlegelii) on plant, Sarapiqui, Heredia, Costa Rica.