White toothed woodrat

Although originally named from San Luis Potosí, Mexico, as a species by Merriam, the white-toothed woodrat was long considered to be a synonym of the white-throated woodrat (Neotoma albigula). Molecular data, however, indicate the populations east of the Rio Grande in New Mexico and Trans-Pecos Texas represent a different species than morphologically similar populations west of the river.

The habitat preferences of the two species appear similar, with woodland to desert habitats preferred. Almost invariably, cacti, especially cholla and prickly pear (Opuntia), are present. In general, the data provided by Macedo and Mares (1988) for what was then thought to be a single species applies to both.