Akodon (Akodon) montensis Thomas 1913

Wilson, Don E. & Reeder, DeeAnn, 2005, Order Rodentia - Family Cricetidae, Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 2, Baltimore: The Johns Hopkins University Press, pp. 955-1189 : 1096

Akodon (Akodon) montensis Thomas 1913

Akodon (Akodon) montensis Thomas 1913 , Ann. Mag. Nat. Hist., ser. 8, 11: 405.

Type Locality: Paraguay, Paraguarí Dept., Sapucái.

Vernacular Names: Montane Akodont.

Distribution: E Paraguay ( Gamarra de Fox and Martin, 1996), NE Argentina (Pardiñas et al., 2003 a), and SE Brazil (Rio de Janeiro to Rio Grande do Sul, including gallery forest settings in Minas Gerais and Goiás; Geise et al., 2001; Rieger et al., 1995).

Discussion: Subgenus Akodon , A. cursor species group ( Rieger et al., 1995). Named as a subspecies of A. arviculoides , a ranking observed by Gyldenstolpe (1932) and Cabrera (1961). Morphologically similar to A. cursor , under which it has been included (e.g., Musser and Carleton, 1993; Reig, 1987; Ximénez and Langguth, 1970), but karyotypically, allozymically, and genetically distinct from that species (D’Elía et al., 2003; Geise et al., 1998, 2001; Rieger et al., 1995). Where A. cursor and A. montensis occur in proximity, the latter species is found at higher elevations, 800 m and above ( Geise et al., 2001); past reports for this species in Uruguay (e.g., Ximénez and Langguth, 1970) have proven to be A. reigi (González et al., 1998). Pardiñas et al. (2003 a) reviewed the taxon’s involved historical treatment and summarized evidence for its discrimination from A. cursor (also see that account).