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.
CITATION STYLE
Luna, L., & Pacheco, V. (2002). A new species of Thomasomys (Muridae: Sigmodontinae) from the Andes of southeastern Peru. Journal of Mammalogy, 83(3), 834–842. https://doi.org/10.1644/1545-1542(2002)083<0834:ANSOTM>2.0.CO;2
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