Dendropsophus tintinnabulum

It is endemic to Brazil and only known from its type locality along the Uaupés River, "some days' journey north of Ipanoré", in the Amazonas state.

Three males in the type series measured 19–20 mm (0.75–0.79 in) in snout–vent length (females were not collected).

[3] The male advertisement call has a brittle, bell-like sound.

[3] These frogs probably live in the understory vegetation of tropical rainforest.

[1] The type collection was made by a small side river where many individuals were sitting on tall grasses and Melastomataceae bushes and calling.