A new species of Chaetostoma Tschudi (Siluriformes: Loricariidae) from Colombia with a definition of the C. anale species group

Detalhes bibliográficos
Autor(a) principal: Ballen, Gustavo A.
Data de Publicação: 2011
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Papéis Avulsos de Zoologia (Online)
Texto Completo: https://www.revistas.usp.br/paz/article/view/33970
Resumo: Chaetostoma formosae sp. nov. is described from piedmont tributaries of the upper río Meta on the Cordillera Oriental in Colombia. The new species is distinguished from its congeners by the presence of an elongate unbranched anal-fin ray with two posterior dermal ridges in mature males, the presence of strongly recurved cheek odontodes, the presence of a parieto-supraoccipital dermal keel, the posterior margin of the pelvic-fin strongly projected and angulate in shape in mature males, and by details of coloration. The new species belongs to an informal monophyletic group herein called the Chaetostoma anale species group, along with two additional species, C. anale and C. jegui, from Colombia and Brazil respectively, based on an apomorphic modification of the anal fin in mature males.
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spelling A new species of Chaetostoma Tschudi (Siluriformes: Loricariidae) from Colombia with a definition of the C. anale species group SistemáticaAncistriniAndesDimorfismo sexualTaxonomíaSystematicsAncistriniAndesSexual dimorphismTaxonomy Chaetostoma formosae sp. nov. is described from piedmont tributaries of the upper río Meta on the Cordillera Oriental in Colombia. The new species is distinguished from its congeners by the presence of an elongate unbranched anal-fin ray with two posterior dermal ridges in mature males, the presence of strongly recurved cheek odontodes, the presence of a parieto-supraoccipital dermal keel, the posterior margin of the pelvic-fin strongly projected and angulate in shape in mature males, and by details of coloration. The new species belongs to an informal monophyletic group herein called the Chaetostoma anale species group, along with two additional species, C. anale and C. jegui, from Colombia and Brazil respectively, based on an apomorphic modification of the anal fin in mature males. Se describe Chaetostoma formosae, sp. nov. de tributarios pedimontanos del alto río Meta sobre la Cordillera Oriental en Colombia. La nueva especie se distingue de sus congéneres por la presencia de un radio alargado no ramificado en la aleta anal con dos carnosidades longitudinales posteriores en machos maduros, presencia de odontoides cefálicos fuertemente recurvados, presencia de una quilla carnosa parieto-supraoccipital, margen posterior de las aletas pélvicas fuertemente proyectado y de forma angular en machos maduros, así como detalles de coloración. Se propone que la nueva especie pertenece a un grupo monofilético informal llamado en el presente trabajo el grupo de especies Chaetostoma anale, junto con dos especies adicionales, C. anale y C. jegui, de Colombia y Brasil respectivamente, con base en una apomorfia de la aleta anal en machos maduros. Universidade de São Paulo (USP), Museu de Zoologia (MZUSP).2011-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/paz/article/view/3397010.1590/S0031-10492011002600001Papéis Avulsos de Zoologia; v. 51 n. 26 (2011); 383-398 Papéis Avulsos de Zoologia; Vol. 51 Núm. 26 (2011); 383-398 Papéis Avulsos de Zoologia; Vol. 51 No. 26 (2011); 383-398 1807-02050031-1049reponame:Papéis Avulsos de Zoologia (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/paz/article/view/33970/36701Ballen, Gustavo A.info:eu-repo/semantics/openAccess2012-07-20T02:45:03Zoai:revistas.usp.br:article/33970Revistahttps://www.revistas.usp.br/pazPUBhttps://www.revistas.usp.br/paz/oaipublicacaomz@usp.br ; einicker@usp.br1807-02050031-1049opendoar:2023-01-12T16:41:39.565623Papéis Avulsos de Zoologia (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv A new species of Chaetostoma Tschudi (Siluriformes: Loricariidae) from Colombia with a definition of the C. anale species group
title A new species of Chaetostoma Tschudi (Siluriformes: Loricariidae) from Colombia with a definition of the C. anale species group
spellingShingle A new species of Chaetostoma Tschudi (Siluriformes: Loricariidae) from Colombia with a definition of the C. anale species group
Ballen, Gustavo A.
Sistemática
Ancistrini
Andes
Dimorfismo sexual
Taxonomía
Systematics
Ancistrini
Andes
Sexual dimorphism
Taxonomy
title_short A new species of Chaetostoma Tschudi (Siluriformes: Loricariidae) from Colombia with a definition of the C. anale species group
title_full A new species of Chaetostoma Tschudi (Siluriformes: Loricariidae) from Colombia with a definition of the C. anale species group
title_fullStr A new species of Chaetostoma Tschudi (Siluriformes: Loricariidae) from Colombia with a definition of the C. anale species group
title_full_unstemmed A new species of Chaetostoma Tschudi (Siluriformes: Loricariidae) from Colombia with a definition of the C. anale species group
title_sort A new species of Chaetostoma Tschudi (Siluriformes: Loricariidae) from Colombia with a definition of the C. anale species group
author Ballen, Gustavo A.
author_facet Ballen, Gustavo A.
author_role author
dc.contributor.author.fl_str_mv Ballen, Gustavo A.
dc.subject.por.fl_str_mv Sistemática
Ancistrini
Andes
Dimorfismo sexual
Taxonomía
Systematics
Ancistrini
Andes
Sexual dimorphism
Taxonomy
topic Sistemática
Ancistrini
Andes
Dimorfismo sexual
Taxonomía
Systematics
Ancistrini
Andes
Sexual dimorphism
Taxonomy
description Chaetostoma formosae sp. nov. is described from piedmont tributaries of the upper río Meta on the Cordillera Oriental in Colombia. The new species is distinguished from its congeners by the presence of an elongate unbranched anal-fin ray with two posterior dermal ridges in mature males, the presence of strongly recurved cheek odontodes, the presence of a parieto-supraoccipital dermal keel, the posterior margin of the pelvic-fin strongly projected and angulate in shape in mature males, and by details of coloration. The new species belongs to an informal monophyletic group herein called the Chaetostoma anale species group, along with two additional species, C. anale and C. jegui, from Colombia and Brazil respectively, based on an apomorphic modification of the anal fin in mature males.
publishDate 2011
dc.date.none.fl_str_mv 2011-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://www.revistas.usp.br/paz/article/view/33970
10.1590/S0031-10492011002600001
url https://www.revistas.usp.br/paz/article/view/33970
identifier_str_mv 10.1590/S0031-10492011002600001
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://www.revistas.usp.br/paz/article/view/33970/36701
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade de São Paulo (USP), Museu de Zoologia (MZUSP).
publisher.none.fl_str_mv Universidade de São Paulo (USP), Museu de Zoologia (MZUSP).
dc.source.none.fl_str_mv Papéis Avulsos de Zoologia; v. 51 n. 26 (2011); 383-398
Papéis Avulsos de Zoologia; Vol. 51 Núm. 26 (2011); 383-398
Papéis Avulsos de Zoologia; Vol. 51 No. 26 (2011); 383-398
1807-0205
0031-1049
reponame:Papéis Avulsos de Zoologia (Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Papéis Avulsos de Zoologia (Online)
collection Papéis Avulsos de Zoologia (Online)
repository.name.fl_str_mv Papéis Avulsos de Zoologia (Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv publicacaomz@usp.br ; einicker@usp.br
_version_ 1797051527194476544

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