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For over 150 years the nine-banded armadillo, Dasypus novemcinctus, has been expanding its range into the southern United States. Previous studies have suggested an average expansion rate of 7.8 km/year, with the fastest expansion rates in the Gulf Coast of Florida at 17.2 km/year and the southern Great Plains at a rate of 11 km/year. Beginning in July 2007, we collected 11 road-killed specimens of D. novemcinctus from southeast Tennessee; one from Hamilton County, one from Rutherford County, three from Marion County, and six from Franklin County. These records represent an extension of approximately 325 km to the east and 375 km to the north of previously published range limits. The new records imply an expansion rate in far excess of previous maximum estimates. The six Franklin County specimens were collected atop the Cumberland Plateau at elevations of 446, 462, 570, 583 (two specimens), and 606 m asl. These elevation records suggest further northward and eastward expansion of the species is likely. The ecological implications of this increased rate of geographic expansion are discussed.

New Records of the Nine-Banded Armadillo,Dasypus novemcinctus, in Southeast Tennessee, and their Implications