Order Rodentia - Family Cricetidae Author Wilson, Don E. Author Reeder, DeeAnn text 2005 The Johns Hopkins University Press Baltimore Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 2 955 1189 book chapter 0-8018-8221-4 10.5281/zenodo.7316535 Microryzomys minutus (Tomes 1860) [Hesperomys] minutus Tomes 1860 , Proc. Zool. Soc. Lond., 1860: 215 . Type Locality: Ecuador , Chimborazo Prov. , probably near Pallatanga. Vernacular Names: Montane Colilargo . Synonyms: Microryzomys aurillus (Thomas 1917) ; Microryzomys dryas (Thomas 1898) ; Microryzomys fulvirostris (J. A. Allen 1912) ; Microryzomys humilior (Thomas 1898) . Distribution: Lower montane to subalpine forest, mostly 2000-3500 m , from N Venezuela , through Colombia , Ecuador and Perú , to WC Bolivia . Conservation: IUCN – Lower Risk (lc). Discussion: Formerly included altissimus as a subspecies by Osgood (1933 a ) , who also treated aurillus , humilior , and fulvirostris as subspecies. No races were deemed diagnosable by Carleton and Musser (1989) .