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 Calomys tener Winge 1887 Calomys tener Winge 1887 , E Museo Lundii, Vol. 1, 3: 15 . Type Locality: Brazil , Minas Gerais State , Rio das Velhas, Lagoa Santa. Vernacular Names: Delicate Laucha . Distribution: Atlantic Forest region and habitats bordering the Cerrado, SE Brazil (S Goiás , Minas Gerais , São Paulo ), and in NE Argentina ( Misiones Prov. , Massoia, 1988 ) and E Bolivia ( Anderson, 1997 ); range limits need refinement. Conservation: IUCN – Lower Risk (lc). Discussion: Arranged as a subspecies of C. laucha by Hershkovitz (1962) , but others have retained tener and C. laucha as distinct species (Cabrera, 1961; Mares et al., 1989 a ; Moojen, 1952 ; Olds, 1988 ). Karyotypic identity (2n = 66, FN = 66) clarified by Bonvicino and Almeida (2000), who expanded upon its morphological and ecological separation from C. expulsus . Anderson (1997) considered identification of the Bolivian specimens as tentative and advised further review of series presently allocated to C. callosus .