Hidden in the litter: cryptic diversity of the leaf-litter toad<i>Rhinella castaneotica</i>–<i>proboscidea</i>complex revealed through integrative taxonomy, with description of a new species from south-western Amazonia

Ferrão, Miquéias; Souza, Romildo Augusto de; Colatreli, Olavo Pinhatti; Howard, James L.; Lima, Albertina P.

doi:10.1080/14772000.2022.2039317

Cited by 4 publications

(3 citation statements)

References 79 publications

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“…Pereyra et al (2021) recovered Rhinella castaneotica (Caldwell, 1991) paraphyletic, with the specimen from French Guiana more related to Rhinella proboscidea Spix, 1824 than to the probable R. castaneotica sensu stricto from the Brazilian state of Pará. Ferrão et al (2022) analyzed specimens from both French Guiana and Amapá, recovering them monophyletic and as the sister group of R. castaneotica and Rhinella teotoniensis Ferrão, Souza, Hanken & Lima, 2022. We agree with their conclusions and consider the species from Amapá an unnamed species, which we treat as R. aff.…”

Section: Family Bufonidae Gray 1825supporting

confidence: 63%

Anurans (Amphibia: Anura) of the Brazilian state of Amapá, eastern Amazonia: species diversity and knowledge gaps

Taucce

Costa-Campos

Carvalho

et al. 2022

EJT

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We herein present the first annotated anuran checklist for the Brazilian state of Amapá, eastern Amazonia, based on a thorough literature review. We recorded the occurrence of 111 species belonging to 13 anuran families distributed across 48 localities throughout Amapá, within two biomes. Among these species, 62.5% occur exclusively in the Tropical Moist Broadleaf Forest biome, ~8% occur exclusively in the Tropical Savanna biome, and ~29% occur in both. Two species were considered endemic to Amapá and were registered only in the central portion of the state. Regarding the conservation status, only one species (Dendropsophus amicorum) is classified as threatened, assigned to the “critically endangered” category. The other species are categorized as either “least concern” or “data deficient” (85 and 8, respectively), whereas 21 are not evaluated. The current annotated list contributes to the incipient knowledge on anuran species richness in Amapá and, despite the research regarding anuran taxonomy has considerably progressed over the past 20 years, there is still much to do. Our data highlight the need for trained taxonomists to develop research in the state.

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Section: Family Bufonidae Gray 1825supporting

confidence: 63%

Anurans (Amphibia: Anura) of the Brazilian state of Amapá, eastern Amazonia: species diversity and knowledge gaps

Taucce

Costa-Campos

Carvalho

et al. 2022

EJT

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“…tinae and A. tapajos clade C) await formal description. These candidate species, together with other recently described species ( Ferrão et al, 2017 ; Ferrão et al, 2020a ; Ferrão et al, 2020b ; Fouquet et al, 2021a ; Fouquet et al, 2021b ; Melo-Sampaio, Ferrão & Moraes, 2021 ; Ferrão et al, 2022 ), highlight both the importance of the upper Madeira Basin as a center of regional biodiversity and the need for additional taxonomic studies in this threatened part of Amazonia.…”

Section: Discussionmentioning

confidence: 71%

A new nurse frog of the Allobates tapajos species complex (Anura: Aromobatidae) from the upper Madeira River, Brazilian Amazonia

Ferrão

Howard

Lima

2022

PeerJ

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Cryptic diversity is extremely common in widespread Amazonian anurans, but especially in nurse frogs of the genus Allobates. There is an urgent need to formally describe the many distinct but unnamed species, both to enable studies of their basic biology but especially to facilitate conservation of threatened environments in which many are found. Here, we describe through integrative taxonomy a new species of the Allobates tapajos species complex from the upper Madeira River, southwestern Amazonia. Species delimitation analyses based on molecular data are congruent and delimit five candidate species in addition to A. tapajos sensu stricto. The new species is recovered as sister to A. tapajos clade F, a candidate species from Teles-Pires River, southeastern Amazonia. The new species differs from nominal congeners in adult and larval morphology and in male advertisement call. Egg deposition sites differ between east and west banks of the upper Madeira River, but there is no evidence of corresponding morphologic or bioacoustic differentiation. The new species appears to be restricted to riparian forests; its known geographic range falls entirely within the influence zone of reservoirs of two large dams, which underscores the urgent need of a conservation assessment through long-term monitoring. This region harbors the richest assemblage of Allobates reported for Brazilian Amazonia, with six nominal species and four additional candidate species awaiting formal description.

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“…The integration of molecular, acoustic and morphological data can help decipher the large proportion of still hidden amazonian biodiversity (e.g., Páez and Ron 2019;Fouquet et al 2021b), and lead to the discovery and description of new taxa (e.g., Lima et al 2020;Carvalho et al 2021;Fouquet et al 2021a;Ferrão et al 2022). However, taxonomic acts are not trivial since many Amazonian species have been historically misidentified, often lumped within putatively widespread taxa (e.g., Amazophrynella minuta Rojas-Zamora et al 2014; Dendropsophus brevifrons Fouquet et al 2015;Boana geographica Fouquet et al 2016).…”

Section: Discussionmentioning

confidence: 99%

A new species of rain frog (Anura: Strabomantidae: Pristimantis) from the Guiana Shield and amended diagnosis of P. ockendeni (Boulenger, 1912)

Mônico¹,

Ferrão²,

Chaparro³

et al. 2022

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Pristimantis is already the most speciose genus among vertebrates, yet the current number of species remains largely underestimated. A member of the P. unistrigatus species group from the Guiana Shield has been historically misidentified as P. ockendeni, a species described from southern Peru. We combined mitochondrial (16S and COI) and nuclear (RAG1) loci, external morphology, skull osteology (μ-CT scan), vocalization (advertisement and courtship calls), geographic distribution and natural history data to differentiate the Guiana Shield populations from P. ockendeni, and describe them as a new species. The new species is crepuscular and nocturnal and inhabits the understory of unflooded (terra firme) forests in Brazil, Guyana and Suriname. It is phylogenetically related to P. ardalonychus, P. martiae and undescribed species from Brazilian Amazonia. The new species notably differs from P. ockendeni and its congeners in the P. unistrigatus species group occurring in the Guiana Shield by the combination of the following characters: absence of dentigerous processes of vomers, presence of vocal slits in males, body size (SVL 16.2–20.7 mm in males and 21.4–25.7 mm in females), advertisement call (call with 4–6 notes, call duration of 158–371 ms and dominant frequency of 3,466–4,521 Hz) and translucent groin coloration in life. To facilitate the recognition and description of cryptic species previously hidden under the name P. ockendeni, we provide an amended diagnosis of this taxon based on external morphology and advertisement call of specimens recently collected nearby the type locality and additional localities in southwestern Amazonia.

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Hidden in the litter: cryptic diversity of the leaf-litter toadRhinella castaneotica–proboscideacomplex revealed through integrative taxonomy, with description of a new species from south-western Amazonia

Cited by 4 publications

References 79 publications

Anurans (Amphibia: Anura) of the Brazilian state of Amapá, eastern Amazonia: species diversity and knowledge gaps

Anurans (Amphibia: Anura) of the Brazilian state of Amapá, eastern Amazonia: species diversity and knowledge gaps

A new nurse frog of the Allobates tapajos species complex (Anura: Aromobatidae) from the upper Madeira River, Brazilian Amazonia

A new species of rain frog (Anura: Strabomantidae: Pristimantis) from the Guiana Shield and amended diagnosis of P. ockendeni (Boulenger, 1912)

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Hidden in the litter: cryptic diversity of the leaf-litter toadRhinella castaneotica–proboscideacomplex revealed through integrative taxonomy, with description of a new species from south-western Amazonia

Cited by 4 publications

References 79 publications

Anurans (Amphibia: Anura) of the Brazilian state of Amapá, eastern Amazonia: species diversity and knowledge gaps

Anurans (Amphibia: Anura) of the Brazilian state of Amapá, eastern Amazonia: species diversity and knowledge gaps

A new nurse frog of the Allobates tapajos species complex (Anura: Aromobatidae) from the upper Madeira River, Brazilian Amazonia

A new species of rain frog (Anura: Strabomantidae: Pristimantis) from the Guiana Shield and ﻿amended diagnosis of P. ockendeni (Boulenger, 1912)

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A new species of rain frog (Anura: Strabomantidae: Pristimantis) from the Guiana Shield and amended diagnosis of P. ockendeni (Boulenger, 1912)