A new species of Thomasomys (Muridae: Sigmodontinae) from the Andes of southeastern Peru

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Abstract

We describe a new species of Thomasomys from the Vilcabamba Cordillera, Cuzco, Peru. This thomasomyine is a medium-sized, small-eared, and long-tailed rodent similar in external and cranial features to Thomasomys silvestris, a species from the western Andean slopes of Ecuador. The new species presents a unique combination of characters that includes the absence of genal vibrissae, absence of a "gap" between the hypothenar and thenar pads, short incisive foramina, and a primitive pattern of carotid circulation. The proposed new species is known only from the type locality, suggesting that its restricted distribution could be attributed to the existence of a relict fauna in the area.

Original languageEnglish
Pages (from-to)834-842
Number of pages9
JournalJournal of Mammalogy
Volume83
Issue number3
DOIs
StatePublished - Aug 2002
Externally publishedYes

Keywords

  • New species
  • Peru
  • Rodent
  • Sigmodontinae
  • Thomasomys
  • Vilcabamba

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