Published July 21, 2023 | Version v1
Journal article Open

A new pale-ventered nurse frog (Aromobatidae: Allobates) from southwestern Brazilian Amazonia

  • 1. Instituto de Meio Ambiente do Acre, Rio Branco, Brazil|Universidade Federal do Amazonas, Manaus, Brazil
  • 2. Harvard University, Cambridge, United States of America|Universidade Federal do Amazonas, Manaus, Brazil
  • 3. Universidade Federal do Amazonas, Manaus, Brazil
  • 4. Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil
  • 5. Museu Nacional, Rio de Janeiro, Brazil
  • 6. Harvard University, Cambridge, United States of America

Description

Abstract

We use integrative taxonomy to formally describe a candidate species of nurse frog of the genus Allobates from southwestern Brazilian Amazonia. The new species nests within a clade that has been defined historically as A. gasconi, but it has an 8.8–11.0% genetic distance for 16S to samples from the type locality of A. gasconi. The new species differs from congeners mainly by males having a translucent white throat and vocal sac; advertisement calls with a duration of 42–60 ms, two notes separated by an inter-note interval of 8–23 ms, and a dominant frequency of 4,953–6,331 Hz; and exotrophic tadpoles with 2 pyramidal papillae on each end of the upper lip and 10–13 pyramidal and cylindrical papillae surrounding the lower lip. Phylogenetic analyses based on mitochondrial DNA suggest that A. gasconi sensu lato as defined previously represents a complex of as many as seven species, corroborating studies that have shown high levels of cryptic diversity within Allobates.

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