Buried in the leaf litter of the Brazilian Atlantic Forest lie members of what just might be the world's cutest genus. The teeny tiny toadlets of the Brachycephalus group are super small frogs that currently number 42 species, and now another member has joined their ranks. The rest of this article is behind a paywall. Please sign in or subscribe to access the full content.

Found in the Serra do Quiriri region, these tiny frogs were determined to be a new species through genetic analysis, morphological differences, and differences in the sounds of their advertisement call . Being so small but so noisy means these species are often easy to hear but difficult to see. Of the 42 known species, 35 have only been known since the year 2000.

These species have a high degree of variety, bu

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