This drab little treefrog is primarily identified by process of elimination; it doesn't have any of the interesting features of other treefrogs. Also, it has that lone white spot on its upper lip, which according to Bartlett & Bartlett (2003) is a mark of this species. However, an apparently knowledgable iNaturalist contributor thinks this must be some other species of Dendropsophus.

Here is a complete list of the herps I saw in the wild on my 2013 MT Amazon Expeditions trip.