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Wednesday, March 20, 2019

[Herpetology • 2017] Hylodes caete • A New Species of Hylodes (Anura, Hylodidae) from Serra do Mar, Southeastern Brazil: The Fourth with Nuptial Thumb Tubercles ---ScRaBBlE


Hylodes caete
Malagoli, de Sá, Canedo & Haddad, 2017 


Abstract

Among the 25 Hylodes species described to date, only three species are known to have nuptial tubercles on the thumb, H. fredi, H. phyllodes, and H. pipilans. Careful analysis of the populations of these three species led us to discover a fourth, undescribed species from the Atlantic Forest of Serra do Mar in the State of São Paulo, southeastern Brazil. The new species exhibits light-colored, oblique lateral stripes and belongs to the Hylodes lateristrigatus group. The new species differs from its congeners by possessing the combination of three traits: (1) pointed nuptial tubercles, distributed in an elliptical area at the base of the dorsal surface of the thumb of males; (2) medium-sized; and (3) parameters of the advertisement call. Molecular analysis of a mitochondrial gene sequence (16S) strongly corroborates the description of phenotype by showing that the new species is genetically distinct from H. fredi, H. phyllodes, and H. pipilans. We also provide information on the natural history, behavior, and conservation status of the new species.

Keywords: Atlantic Forest, Brazilian torrent frogs, Hylodes phyllodes, Sympatry, Syntopy, Vocalization


FIG. 1.— Live adult male Hylodes caete sp. nov. (holotype CFBH 40524; snout–vent length ¼ 31.6 mm). Photograph taken in Parque Estadual da Serra do Mar, municipality of Itanhaém, State of São Paulo, southeastern Brazil. 
  
Hylodes caete sp. nov.
Hylodes sp. (aff. phyllodes); Trevine et al. (2014):130

Etymology.— The name of the new species, caete, is a noun in apposition that is derived from the combination of two indigenous Tupi words, ‘‘caa’’ and ‘‘ete.’’ The combination expresses ‘‘true forest’’ with, respectively, ‘‘caa’’ meaning forest and ‘‘ete’’ meaning true. Here, caete refers to the high preserved forests that harbor the fast streams with clear water in which the new species is known to breed. 

Distribution.— Hylodes caete is known from the crests and slopes in high montane, montane, and submontane dense ombrophilous forests of Serra do Mar in the State of São Paulo. ...


Leo R. Malagoli, Fábio P. de Sá, Clarissa Canedo and Célio F. B. Haddad. 2017.  A New Species of Hylodes (Anura, Hylodidae) from Serra do Mar, Southeastern Brazil: The Fourth with Nuptial Thumb Tubercles. Herpetologica. 73(2); 136-147.  DOI: 10.1655/HERPETOLOGICA-D-16-00069

     Nova espécie de sapo é descoberta por cientistas em São Paulo -  http://sustentabilidade.estadao.com.br/blogs/ambiente-se/nova-especie-de-sapo-vive-em-sao-paulo/  @estadao

Resumo: Dentre as 25 espécies de Hylodes descritas, eram conhecidas somente três com tubérculos nupciais nos polegares, H. fredi, H. phyllodes e H. pipilans. A análise cuidadosa das populações destas três espécies de Hylodes permitiu a identificação da existência da uma quarta espécie não descrita para a Mata Atlântica da Serra do Mar no Estado de São Paulo, Sudeste do Brasil. Apresentando listras laterais oblíquas de coloração clara, a nova espécie também pertence ao grupo de Hylodes lateristrigatus. A nova espécie se diferencia dos seus congêneres pela combinação de três características: (1) tubérculos nupciais pontiagudos, distribuídos em uma área elíptica na base da superfície dorsal dos polegares dos machos; (2) tamanho médio; e (3) parâmetros do canto de anúncio. A análise molecular da sequência de um gene mitocondrial (16S) corrobora fortemente nossas conclusões fenotípicas, demonstrando que a nova espécie é geneticamente distinta de H. fredi, H. phyllodes e H. pipilans. São também apresentadas informações sobre a história natural, comportamento e o estado de conservação da nova espécie.


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