Collected at Mexico, Chiapas, Cintalapa municipality, 29. 4 km NW Cintalapa, Zona de Aprovechamiento Forestal los Ocotones, 1067 m, 16.770° N, 93.99° W. Formerly Oryzomys rostratus.
Skin and skull of holotype, USAC 4759/MVZ 223293, collected at Guatemala, Huehuetenango, San Mateo Ixtatan municipality, 10.3 km E Aldea Yalambojoch, Finca Ixcansán, 1,647 m, 16.00614°N, 91.49988°W
Collected at Mexico, Chiapas, Cintalapa municipality, 29. 4 km NW Cintalapa, Zona de Aprovechamiento Forestal los Ocotones, 1067 m, 16.770 ° N, 93.99° W