Oryzomys polius Osgood 1913

Oryzomys polius Osgood 1913, Field Mus . Nat. Hist. Publ., Zool. Ser., 10: 97.

Type Locality: Perú, Amazonas Dept., mountains east of Balsas, Tambo Carrizal, 5000 ft (1524 m).

Vernacular Names: Maranon Oryzomys.

Distribution: NC Perú (Amazonas, Cajamarca, Piura).

Conservation: IUCN – Lower Risk (lc).

Discussion: Affinities obscure; compared to O. xanthaeolus by Osgood (1913). A valid and very distinctive species, all locality records so far confined to the dry lowlands of the upper Río Marañon basin, east of the N Peruvian Andes.