Una especie nueva de Thomasomys Coues, 1884 (Rodentia: Sigmodontinae) de los bosques montanos del norte de Perú con comentarios sobre el grupo “aureus”


  • Dennisse Ruelas 1 Museo de Historia Natural, Universidad Nacional Mayor de San Marcos, Av. Arenales 1256, Jesús María, Lima 15072, Perú. 2 Instituto de Ciencias Biológicas Antonio Raimondi, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Perú. 3 Institut des Sciences de l’Evolution (ISEM, UMR 5554 CNRS-IRD-UM), Université de Montpellier, France. https://orcid.org/0000-0002-3793-8639
  • Víctor Pacheco 1 Museo de Historia Natural, Universidad Nacional Mayor de San Marcos, Av. Arenales 1256, Jesús María, Lima 15072, Perú. 2 Instituto de Ciencias Biológicas Antonio Raimondi, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Perú. https://orcid.org/0000-0002-1005-135X



Palabras clave:

Piura, Thomasomys aureus, Yungas, Thomasomys apeco, Thomasomys praetor, Thomasomys pyrrhonotus, nueva especie


Describimos una nueva especie de roedor cricétido Thomasomys (Sigmodontinae) del grupo "aureus" a partir de cuatro especímenes colectados en Carmen de la Frontera, en el departamento de Piura, Perú. Esta nueva especie tiene una cola muy larga y blanca, vibrisas mistaciales muy largas que sobrepasan ampliamente el pabellón auricular y una morfología craneal y dental distintiva que difiere de cualquier otra especie conocida de Thomasomys. También es una de las especies de Thomasomys más grandes, superado en tamaño solo por T. apeco. Un análisis filogenético recuperó esta especie dentro de un grupo "aureus" no monofilético con una distancia genética entre 5.47% (con T. auricularis) y 10.17% (con Thomasomys sp. 1). Además, se presenta por primera vez la posición filogenética de T. apeco, T. praetor y T. pyrrhonotus, lo que suscita una discusión sobre la naturaleza del grupo "aureus".


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Cómo citar

Ruelas, Dennisse, y Víctor Pacheco. 2021. «Una Especie Nueva De Thomasomys Coues, 1884 (Rodentia: Sigmodontinae) De Los Bosques Montanos Del Norte De Perú Con Comentarios Sobre El Grupo “aureus”». Revista Peruana De Biología 28 (3):e19912. https://doi.org/10.15381/rpb.v28i3.19912.



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