Taxonomy
There are several subspecies of P. parvus. Sulentich and Genoways and Brown classify the yellow-eared pocket mouse as P. p. xanthonus Grinell, a subspecies of the Great Basin pocket mouse. However, Jones and others classify the yellow-eared pocket mouse as a distinct species, P. xanthonotus (Grinnell).
Read more about this topic: Perognathus Parvus