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Issue: Vol. 5493 No. 4: 13 Aug. 2024
Type: Article
Published: 2024-08-13
DOI: 10.11646/zootaxa.5493.4.6
Page range: 401-418
Abstract views: 182
PDF downloaded: 3

Phylogenetic position, morphological data, call, and geographic distribution of the elusive treefrog Ololygon skuki (Hylidae: Hylinae: Scinaxini)

Setor de Herpetologia; Museu de História Natural; Universidade Federal de Alagoas; 57010-020; Maceió; Alagoas; Brazil; Laboratório de Biologia Integrativa; Setor de Biodiversidade; Instituto de Ciências Biológicas e da Saúde; Universidade Federal de Alagoas; 57072-970; Maceió; Alagoas; Brazil
Laboratório de Herpetologia; Departamento de Biodiversidade and Centro de Aquicultura (CAUNESP); Universidade Estadual Paulista; 13506-970; Rio Claro; São Paulo; Brazil
Programa de Pós-graduação em Biologia Animal; Departamento de Zoologia; Centro de Biociências; Universidade Federal de Pernambuco; 50670-901; Recife; Pernambuco; Brazil
Laboratório de Herpetologia; Departamento de Biodiversidade and Centro de Aquicultura (CAUNESP); Universidade Estadual Paulista; 13506-970; Rio Claro; São Paulo; Brazil; Programa de Pós-graduação em Ecologia; Evolução e Biodiversidade; Universidade Estadual Paulista; 13505-900; Rio Claro; São Paulo; Brazil
Instituto de Ciências Biológicas e da Saúde; Universidade Federal de Alagoas; Campus A. C. Simões; 57072-970; Maceió; Alagoas; Brazil
Faculdade de Educação; Ciências e Letras de Iguatu; Universidade Estadual do Ceará; 63500-000; Iguatu; Ceará; Brazil
Laboratório Interdisciplinar de Anfíbios e Répteis; Departamento de Biologia; Universidade Federal Rural de Pernambuco; 52171-900; Recife; Pernambuco; Brazil
Núcleo Regional de Ofiologia; Universidade Federal do Ceará; Campus do Pici; 60445-760; Fortaleza; Ceará; Brazil
Universidade Federal do Rio de Janeiro; Museu Nacional; Departamento de Vertebrados; 20940-040; Rio de Janeiro; Brazil
División Herpetología; Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”—CONICET; C1405DJR; CABA; Buenos Aires; Argentina; Departamento de Biodiversidad y Biología Experimental; Faculdade de Ciencias Exactas y Naturales; Universidad de Buenos Aires; C1428EGA; CABA; Buenos Aires; Argentina
Amphibia APA Catolé Atlantic Forest Behavior Morphology Phylogeny O. argyreornata group

Abstract

Ololygon skuki is a species of the O. argyreornata group, only known to occur in an Atlantic Forest fragment in the state of Alagoas, Brazil. Current knowledge about this species is restricted to descriptions of both adults and larvae. In this study, we explore the phylogenetic relationships of O. skuki based on molecular data, provide new morphological observations such as the presence of the nuptial pad on Finger III, describe its call, and update its geographic distribution. Our results indicate that O. skuki is the sister taxon of all other lineages of the O. argyreornata group. Furthermore, sequences from a specimen previously identified as O. argyreornata in the municipality of São Sebastião do Passé, state of Bahia, Brazil, were found to be nested among topotypic specimens of O. skuki. This extends the known distribution of this species approximately 425 km southwest from the type locality. The call of O. skuki consists of a long series of 26–34 short squawk-like pulsed notes, lasting 2.8–3.7 seconds, with a dominant frequency of 4,565.0–5,512.5 Hz.

 

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