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 Chibchanomys orcesi Jenkins and Barnett 1997 Chibchanomys orcesi Jenkins and Barnett 1997 , Bull. Nat. Hist. Mus . Lond., 63: 124 . Type Locality: Ecuador , Azuay Prov. , Las Cajas, Lake Luspa, 3700 m ; 02°50’S , 79°30’W . Vernacular Names: Las Cajas Ichthyomyine . Distribution: Páramo, 3100-4000 m , of the Las Cajas Plateau, S Ecuador . Discussion: Although exhibiting certain similarities to Neusticomys , the brunt of apomorphic traits substantiates the placement of orcesi in Chibchanomys . Phylogenetic relationships to other ichthyomyine genera examined by Jenkins and Barnett (1997) ; behavioral and ecological observations supplied by Barnett (1997) .