Oligoryzomys griseolus Osgood 1912

Oligoryzomys griseolus Osgood 1912, Field Mus . Nat. Hist. Publ., Zool. Ser., 10: 49.

Type Locality: Venezuela, Táchira State, upper Río Táchira, west of Páramo de Tamá, 6000-7000 ft (1830-2130 m).

Vernacular Names: Grizzled Colilargo.

Distribution: Táchira Andes of extreme W Venezuela and Cordillera Oriental of E Colombia.

Conservation: IUCN – Lower Risk (lc).

Discussion: As noted by Osgood (1912) and verified by specimens in USNM, this distinctive form contrasts sharply with neighboring populations of O. fulvescens (e.g., navus and tenuipes) and instead resembles O. vegetus of lower Middle America.