Subspecies and Distribution. T.u.umbrinusRichardson,1829—ECZacatecas,SthroughtheTrans-MexicoVolcanicBelt,intoWCVeracruz(PicodeOrizaba),Mexico. T.u.durangiNelson&Goldman,1934—SWDurangoandNWZacatecas,Mexico. T.u.goldmaniMerriam,1901—CChihuahuaandSWCoahuilaintoECDurango,Mexico. T. u. intermedius Mearns, 1897 — SE Arizona and SW New Mexico, USA, S into Sonora and NW Chihuahua, Mexico. in Geomyidae

Subspecies and Distribution. T.u.umbrinusRichardson,1829—ECZacatecas,SthroughtheTrans-MexicoVolcanicBelt,intoWCVeracruz(PicodeOrizaba),Mexico. T.u.durangiNelson&Goldman,1934—SWDurangoandNWZacatecas,Mexico. T.u.goldmaniMerriam,1901—CChihuahuaandSWCoahuilaintoECDurango,Mexico. T. u. intermedius Mearns, 1897 — SE Arizona and SW New Mexico, USA, S into Sonora and NW Chihuahua, Mexico.Published as part of Don E. Wilson, Thomas E. Lacher, Jr & Russell A. Mittermeier, 2016, Geomyidae, pp. 234-269 in Handbook of the Mammals of the World – Volume 6 Lagomorphs and Rodents I, Barcelona :Lynx Edicions on page 239, DOI: 10.5281/zenodo.660380