A new living species of degu, genus Octodon (Hystricomorpha: Octodontidae)

Guillermo D'Elía; Pablo Teta; Diego H. Verzi; Richard Cadenillas; James L. Patton

doi:10.1093/jmammal/gyaa143

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10 December 2020 A new living species of degu, genus Octodon (Hystricomorpha: Octodontidae)

Guillermo D'Elía, Pablo Teta, Diego H. Verzi, Richard Cadenillas, James L. Patton

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J. of Mammalogy, 102(1):139-154 (2020). https://doi.org/10.1093/jmammal/gyaa143

Abstract

We combine morphological (qualitative and quantitative data) and genetic (one mitochondrial and one nuclear gene) data from a large set of specimens of Octodon from the four currently recognized living species of the genus. The integration of the results (qualitative assessment, multivariate analysis of cranial measurements, and gene trees) allows us to state that 1) the current taxonomic scheme does not reflect the species diversity of Octodon; 2) in particular, as currently understood O. bridgesii likely is a complex of three species; 3) one of these, encompassing the southern populations of the genus, in the Araucanía Region (Chile) and Neuquén Province (Argentina), is named and described here as a new species; and 4) the mitochondrial gene tree departs from the nuclear gene tree with respect to O. pacificus and the new species here described.

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Guillermo D'Elía, Pablo Teta, Diego H. Verzi, Richard Cadenillas, and James L. Patton "A new living species of degu, genus Octodon (Hystricomorpha: Octodontidae)," Journal of Mammalogy 102(1), 139-154, (10 December 2020). https://doi.org/10.1093/jmammal/gyaa143

Received: 26 June 2020; Accepted: 15 October 2020; Published: 10 December 2020

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