Phyllotis definitus Osgood 1915
Phyllotis definitus Osgood 1915, Field Mus . Nat. Hist. Publ., Zool. Ser., 10: 189.
Type Locality: Perú, Ancash Dept., Mácate, 9000 ft (2743 m).
Vernacular Names: Ancash Pericote.
Distribution: Andes of Ancash, Perú.
Conservation: IUCN – Lower Risk (lc).
Discussion: Included in P. magister by Pearson (1958) and in P. darwini by Hershkovitz (1962) but distinctive karyotype is unlike either of those species (see Pearson, 1972).