Boana boans
(Linnaeus, 1758)
Madre Selva field station, Depto Loreto, Peru. January 10, 2011.
One of the largest treefrogs in the neotropics. Males build a nest basin along forest streams (see bottom photo below), and then defend it from other males with the aid of an exposed bone spine on their thumbs (hence the common name). Note the fully webbed hands and feet.
My Flickr album for this species is here.
HerpMapper records for this species are here.