Dendropsophus brevifrons Short-nosed Treefrog
Some other names for this species:
Crump Treefrog
Madre Selva Biological Station, Loreto, PeruJanuary 14, 2014
Short-nosed Treefrog (Dendropsophus brevifrons)
This small treefrog came out at night on the plants right along the edge of the Madre Selva camp clearing. They look a lot like a slightly more interesting version of Dendropsophus leali.

Here is a complete list of the herps I saw in the wild on my 2014 MT Amazon Expeditions trip.

Madre Selva Biological Station, Loreto, PeruJanuary 15, 2014
Short-nosed Treefrog (Dendropsophus brevifrons)
A different individual from the same little colony of these frogs at the edge of the Madre Selva clearing.
Madre Selva Biological Station, Loreto, PeruFebruary 2, 2016
Short-nosed Treefrog (Dendropsophus brevifrons) Short-nosed Treefrog (Dendropsophus brevifrons)
The most easily seen distinctive mark on this species is the pair of white marks between the eye and the upper lip. Other closely related species have only a single white mark, or no white marks.

My Travelogues and Trip Lists page includes a complete list of the herps I saw in the wild on my 2016 MT Amazon Expeditions trip.

Online references:
Printed references: