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Article
Thomomys nayarensis, a New Species of Pocket Gopher from the Sierra del Nayar, Nayarit, Mexico
Journal of Mammalogy (2013)
  • Verity L. Mathis, Louisiana State University
  • Mark S. Hafner, Louisiana State University
  • David J. Hafner, University of New Mexico
  • James W. Demastes, University of Northern Iowa
Abstract
The southern pocket gopher, Thomomys umbrinus, traditionally has been divided into as many as 5 genetically defined subclades based on chromosomal and allozymic data. Recent molecular analyses have resurrected 2 species from within these clades: 1 from the Pacific coastal lowlands (T. atrovarius), and another from the highlands of the Sierra Madre Occidental (T. sheldoni). In this study, multilocus genetic analyses of 3 mitochondrial and 5 nuclear genes reveal a previously unrecognized 3rd species apparently restricted to the Sierra del Nayar of northeastern Nayarit, Mexico. In addition to molecular and chromosomal studies of this new species, cranial morphology is analyzed to help distinguish it from its congeners. This taxon, T. nayarensis, is described herein, and a key to distinguishing the 3 species ofThomomys in northeastern Nayarit is provided.
Keywords
  • cytochrome b,
  • Geomyidae,
  • phylogenetics,
  • Rodentia,
  • speciation,
  • taxonomy
Disciplines
Publication Date
2013
DOI
http://dx.doi.org/10.1644/13-MAMM-A-013.1
Citation Information
Verity L. Mathis, Mark S. Hafner, David J. Hafner and James W. Demastes. "Thomomys nayarensis, a New Species of Pocket Gopher from the Sierra del Nayar, Nayarit, Mexico" Journal of Mammalogy Vol. 94 Iss. 5 (2013) p. 983 - 994
Available at: http://works.bepress.com/james_demastes/4/