Oligoryzomys arenalis Thomas 1913
Oligoryzomys arenalis Thomas 1913, Ann. Mag. Nat. Hist., ser. 8, 12: 571.
Type Locality: Perú, Lambayeque Dept., Eten, 10 m.
Vernacular Names: Sandy Colilargo.
Distribution: Arid and semiarid coastal plain of Perú.
Conservation: IUCN – Lower Risk (lc).
Discussion: Level of relationship to O. fulvescens warrants clarification.