A new species of crab-eating rat of the genus Ichthyomys, from Ecuador (Rodentia, Cricetidae, Sigmodontinae)

Autores
Fernández de Córdova, Javier; Nivelo Villavicencio, Carlos Hernán; Reyes Puig, Carolina; Pardiñas, Ulises Francisco J.; Brito, Jorge
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Based on two adult specimens collected in the Río León (Azuay, Ecuador), we describe a new highland species of a small crab-eating rat of the genus Ichthyomys Thomas (Rodentia, Cricetidae, Ichthyomyini). It is distinguishable from Ichthyomys hydrobates (Winge, 1891), the species phenetically closest to it, by its smaller size, bicolored tail (unicolored in I. hydrobates), broad and heavily fringed hindfoot (narrower and moderately fringed in I. hydrobates), and several craniodental traits (e.g. rostrum short broad; nasals anteriorly truncated; interorbital region narrow; supraorbital margins smoothly rounded; supraorbital foramina small, zygomatic plate very narrow; incisors opisthodont; length of M3 half that of M2). The new species occurs in the western Andes in southern Ecuador and is allopatric with Ichthyomys stolzmanni Thomas, 1893, which also has a bicolored tail but is larger. The new species brings the number of Ecuadorean Ichthyomys to four, Ecuador thus becoming the country with the greatest diversity of Ichthyomyini (four genera and eight species).
Fil: Fernández de Córdova, Javier. Universidad de Buenos Aires; Argentina. Universidad del Azuay.; Ecuador
Fil: Nivelo Villavicencio, Carlos Hernán. Universidad del Azuay.; Ecuador
Fil: Reyes Puig, Carolina. Universidad San Francisco de Quito; Ecuador
Fil: Pardiñas, Ulises Francisco J.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Diversidad y Evolución Austral; Argentina. Instituto Nacional de Biodiversidad; Ecuador
Fil: Brito, Jorge. Escuela Politécnica Nacional; Ecuador. Instituto Nacional de Biodiversidad; Ecuador
Materia
ANDES
BIODIVERSITY
ICHTHYOMYINI
MORPHOLOGY
NEOTROPICS
NEW SPECIES
TAXONOMY
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/139057
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/139057
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A new species of crab-eating rat of the genus Ichthyomys, from Ecuador (Rodentia, Cricetidae, Sigmodontinae)Fernández de Córdova, JavierNivelo Villavicencio, Carlos HernánReyes Puig, CarolinaPardiñas, Ulises Francisco J.Brito, JorgeANDESBIODIVERSITYICHTHYOMYINIMORPHOLOGYNEOTROPICSNEW SPECIESTAXONOMYhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Based on two adult specimens collected in the Río León (Azuay, Ecuador), we describe a new highland species of a small crab-eating rat of the genus Ichthyomys Thomas (Rodentia, Cricetidae, Ichthyomyini). It is distinguishable from Ichthyomys hydrobates (Winge, 1891), the species phenetically closest to it, by its smaller size, bicolored tail (unicolored in I. hydrobates), broad and heavily fringed hindfoot (narrower and moderately fringed in I. hydrobates), and several craniodental traits (e.g. rostrum short broad; nasals anteriorly truncated; interorbital region narrow; supraorbital margins smoothly rounded; supraorbital foramina small, zygomatic plate very narrow; incisors opisthodont; length of M3 half that of M2). The new species occurs in the western Andes in southern Ecuador and is allopatric with Ichthyomys stolzmanni Thomas, 1893, which also has a bicolored tail but is larger. The new species brings the number of Ecuadorean Ichthyomys to four, Ecuador thus becoming the country with the greatest diversity of Ichthyomyini (four genera and eight species).Fil: Fernández de Córdova, Javier. Universidad de Buenos Aires; Argentina. Universidad del Azuay.; EcuadorFil: Nivelo Villavicencio, Carlos Hernán. Universidad del Azuay.; EcuadorFil: Reyes Puig, Carolina. Universidad San Francisco de Quito; EcuadorFil: Pardiñas, Ulises Francisco J.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Diversidad y Evolución Austral; Argentina. Instituto Nacional de Biodiversidad; EcuadorFil: Brito, Jorge. Escuela Politécnica Nacional; Ecuador. Instituto Nacional de Biodiversidad; EcuadorDe Gruyter2019-12-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/139057Fernández de Córdova, Javier; Nivelo Villavicencio, Carlos Hernán; Reyes Puig, Carolina; Pardiñas, Ulises Francisco J.; Brito, Jorge; A new species of crab-eating rat of the genus Ichthyomys, from Ecuador (Rodentia, Cricetidae, Sigmodontinae); De Gruyter; Mammalia; 84; 4; 12-12-2019; 377-3911864-1547CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1515/mammalia-2019-0022info:eu-repo/semantics/altIdentifier/url/https://www.degruyter.com/document/doi/10.1515/mammalia-2019-0022/htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-17T11:29:35Zoai:ri.conicet.gov.ar:11336/139057instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-17 11:29:35.313CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A new species of crab-eating rat of the genus Ichthyomys, from Ecuador (Rodentia, Cricetidae, Sigmodontinae)
title A new species of crab-eating rat of the genus Ichthyomys, from Ecuador (Rodentia, Cricetidae, Sigmodontinae)
spellingShingle A new species of crab-eating rat of the genus Ichthyomys, from Ecuador (Rodentia, Cricetidae, Sigmodontinae)
Fernández de Córdova, Javier
ANDES
BIODIVERSITY
ICHTHYOMYINI
MORPHOLOGY
NEOTROPICS
NEW SPECIES
TAXONOMY
title_short A new species of crab-eating rat of the genus Ichthyomys, from Ecuador (Rodentia, Cricetidae, Sigmodontinae)
title_full A new species of crab-eating rat of the genus Ichthyomys, from Ecuador (Rodentia, Cricetidae, Sigmodontinae)
title_fullStr A new species of crab-eating rat of the genus Ichthyomys, from Ecuador (Rodentia, Cricetidae, Sigmodontinae)
title_full_unstemmed A new species of crab-eating rat of the genus Ichthyomys, from Ecuador (Rodentia, Cricetidae, Sigmodontinae)
title_sort A new species of crab-eating rat of the genus Ichthyomys, from Ecuador (Rodentia, Cricetidae, Sigmodontinae)
dc.creator.none.fl_str_mv Fernández de Córdova, Javier
Nivelo Villavicencio, Carlos Hernán
Reyes Puig, Carolina
Pardiñas, Ulises Francisco J.
Brito, Jorge
author Fernández de Córdova, Javier
author_facet Fernández de Córdova, Javier
Nivelo Villavicencio, Carlos Hernán
Reyes Puig, Carolina
Pardiñas, Ulises Francisco J.
Brito, Jorge
author_role author
author2 Nivelo Villavicencio, Carlos Hernán
Reyes Puig, Carolina
Pardiñas, Ulises Francisco J.
Brito, Jorge
author2_role author
author
author
author
dc.subject.none.fl_str_mv ANDES
BIODIVERSITY
ICHTHYOMYINI
MORPHOLOGY
NEOTROPICS
NEW SPECIES
TAXONOMY
topic ANDES
BIODIVERSITY
ICHTHYOMYINI
MORPHOLOGY
NEOTROPICS
NEW SPECIES
TAXONOMY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Based on two adult specimens collected in the Río León (Azuay, Ecuador), we describe a new highland species of a small crab-eating rat of the genus Ichthyomys Thomas (Rodentia, Cricetidae, Ichthyomyini). It is distinguishable from Ichthyomys hydrobates (Winge, 1891), the species phenetically closest to it, by its smaller size, bicolored tail (unicolored in I. hydrobates), broad and heavily fringed hindfoot (narrower and moderately fringed in I. hydrobates), and several craniodental traits (e.g. rostrum short broad; nasals anteriorly truncated; interorbital region narrow; supraorbital margins smoothly rounded; supraorbital foramina small, zygomatic plate very narrow; incisors opisthodont; length of M3 half that of M2). The new species occurs in the western Andes in southern Ecuador and is allopatric with Ichthyomys stolzmanni Thomas, 1893, which also has a bicolored tail but is larger. The new species brings the number of Ecuadorean Ichthyomys to four, Ecuador thus becoming the country with the greatest diversity of Ichthyomyini (four genera and eight species).
Fil: Fernández de Córdova, Javier. Universidad de Buenos Aires; Argentina. Universidad del Azuay.; Ecuador
Fil: Nivelo Villavicencio, Carlos Hernán. Universidad del Azuay.; Ecuador
Fil: Reyes Puig, Carolina. Universidad San Francisco de Quito; Ecuador
Fil: Pardiñas, Ulises Francisco J.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Diversidad y Evolución Austral; Argentina. Instituto Nacional de Biodiversidad; Ecuador
Fil: Brito, Jorge. Escuela Politécnica Nacional; Ecuador. Instituto Nacional de Biodiversidad; Ecuador
description Based on two adult specimens collected in the Río León (Azuay, Ecuador), we describe a new highland species of a small crab-eating rat of the genus Ichthyomys Thomas (Rodentia, Cricetidae, Ichthyomyini). It is distinguishable from Ichthyomys hydrobates (Winge, 1891), the species phenetically closest to it, by its smaller size, bicolored tail (unicolored in I. hydrobates), broad and heavily fringed hindfoot (narrower and moderately fringed in I. hydrobates), and several craniodental traits (e.g. rostrum short broad; nasals anteriorly truncated; interorbital region narrow; supraorbital margins smoothly rounded; supraorbital foramina small, zygomatic plate very narrow; incisors opisthodont; length of M3 half that of M2). The new species occurs in the western Andes in southern Ecuador and is allopatric with Ichthyomys stolzmanni Thomas, 1893, which also has a bicolored tail but is larger. The new species brings the number of Ecuadorean Ichthyomys to four, Ecuador thus becoming the country with the greatest diversity of Ichthyomyini (four genera and eight species).
publishDate 2019
dc.date.none.fl_str_mv 2019-12-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/139057
Fernández de Córdova, Javier; Nivelo Villavicencio, Carlos Hernán; Reyes Puig, Carolina; Pardiñas, Ulises Francisco J.; Brito, Jorge; A new species of crab-eating rat of the genus Ichthyomys, from Ecuador (Rodentia, Cricetidae, Sigmodontinae); De Gruyter; Mammalia; 84; 4; 12-12-2019; 377-391
1864-1547
CONICET Digital
CONICET
url http://hdl.handle.net/11336/139057
identifier_str_mv Fernández de Córdova, Javier; Nivelo Villavicencio, Carlos Hernán; Reyes Puig, Carolina; Pardiñas, Ulises Francisco J.; Brito, Jorge; A new species of crab-eating rat of the genus Ichthyomys, from Ecuador (Rodentia, Cricetidae, Sigmodontinae); De Gruyter; Mammalia; 84; 4; 12-12-2019; 377-391
1864-1547
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1515/mammalia-2019-0022
info:eu-repo/semantics/altIdentifier/url/https://www.degruyter.com/document/doi/10.1515/mammalia-2019-0022/html
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv De Gruyter
publisher.none.fl_str_mv De Gruyter
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1843606652144582656
score 13.001348

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