Dendropsophus rossalleni
(Goin, 1959)
Madre Selva field station, Depto Loreto, Peru. January 12, 2011
The white triangle is the key diagnostic for this small hylid, considered to be part of the Dendropsophus parviceps group. Other characteristics include a light gray eye ring around a rusty red iris, and orangeish toepads.
My Flickr album for this species is here.
