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| Ololygon paulofreirei Roberto, Ávila, de Lima & Santos, 2025 |
Abstract
The Atlantic Forest in Brazil is a highly threatened biome, recognized as a biodiversity hotspot that hosts numerous endangered species with restricted distributions and facing intense human pressures. The Pernambuco Endemism Centre (PEC), located in Northeastern Brazil, represents one of the most concerning regions within the Atlantic Forest, as it comprises small, fragmented patches of pristine forest harboring several endangered species. Additionally, many species may be threatened but remain undocumented due to a lack of taxonomic studies, particularly within cryptic species complexes. In this study, we assessed the taxonomic status of populations assigned to the genus Ololygon from the state of Pernambuco. This genus presents several cryptic species with subtle morphological differences. Based on morphological, molecular, and acoustic data, we conclude that the populations from the state of Pernambuco constitute a previously undescribed species. Furthermore, we update the geographic distribution of the Ololygon gr. argyreornata species group, providing new morphological and acoustic data for O. skuki from the northern coast of Bahia state, and redescribe the advertisement call of O. argyreornata from Linhares, Espírito Santo.
Keywords: cryptic species; integrative taxonomy; Ololygon skuki; Scinaxinae; vocalization
Ololygon paulofreirei
Igor Joventino Roberto, Robson Waldemar Ávila, Marcelo G. de Lima and Ednilza Maranhão dos Santos. 2025. Taxonomic Assessment of Ololygon gr. argyreornata (Anura, Hylidae) from northern Atlantic Forest reveals A New Species from the Pernambuco Endemism Centre, northeastern Brazil. Amphibia-Reptilia. DOI: doi.org/10.1163/15685381-bja10241 [23 Oct 2025]
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