Akodon Meyen 1833

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 : 1091

Akodon Meyen 1833

Akodon Meyen 1833 , Verhandl. Kais. Leop.-Carol. Akad. Wiss., Vol. 16, 2: 599.

Type Species: Akodon boliviensis Meyen 1833

Synonyms: Acodon Agassiz 1846 ; Axodon Giebel 1855 ; Chalcomys Thomas 1916 ; Plectomys Borchert and Hansen 1983 .

Species and subspecies: 41 species in 3 subgenera:

Subgenus Akodon (Akodon) Meyen 1833

Subgenus Akodon (Hypsimys) Thomas 1918

Subgenus Akodon (Microxus) Thomas 1909

Species Akodon aerosus Thomas 1913

Species Akodon (Akodon) affinis J. A. Allen 1912

Species Akodon (Akodon) albiventer Thomas 1897

Species Akodon (Akodon) aliquantulus Díaz, Barquez, Braun, and Mares 1999

Species Akodon (Akodon) azarae (Fischer 1829)

Species Akodon bogotensis Thomas 1895

Species Akodon (Akodon) boliviensis Meyen 1833

Species Akodon (Hypsimys) budini Thomas 1918

Species Akodon (Akodon) cursor Winge 1887

Species Akodon (Akodon) dayi Osgood 1916

Species Akodon (Akodon) dolores Thomas 1916

Species Akodon (Akodon) fumeus Thomas 1902

Species Akodon (Akodon) iniscatus Thomas 1919

Species Akodon (Akodon) juninensis Myers, Patton, and Smith 1990

Species Akodon (Akodon) kofordi Myers and Patton 1989

Species Akodon (Microxus) latebricola Anthony 1924

Species Akodon (Akodon) leucolimnaeus Cabrera 1926

Species Akodon (Akodon) lindberghi Hershkovitz 1990

Species Akodon (Akodon) lutescens J. A. Allen 1901

Species Akodon (Microxus) mimus Thomas 1901

Species Akodon (Akodon) molinae Contreras 1968

Species Akodon (Akodon) mollis Thomas 1894

Species Akodon (Akodon) montensis Thomas 1913

Species Akodon (Akodon) mystax Hershkovitz 1998

Species Akodon (Akodon) neocenus Thomas 1919

Species Akodon (Akodon) oenos Braun, Mares, and Ojeda 2000

Species Akodon (Akodon) orophilus Osgood 1913

Species Akodon (Akodon) paranaensis Christoff, Fagundes, Sbalqueiro, Mattevi, and Yonenaga-Yassuda 2000

Species Akodon (Akodon) pervalens Thomas 1925

Species Akodon (Akodon) reigi González, Langguth, and Oliveira 1998

Species Akodon (Akodon) sanctipaulensis Hershkovitz 1990

Species Akodon (Akodon) serrensis Thomas 1902

Species Akodon (Hypsimys) siberiae Myers and Patton 1989

Species Akodon (Akodon) simulator Thomas 1916

Species Akodon (Akodon) spegazzinii Thomas 1897

Species Akodon (Akodon) subfuscus Osgood 1944

Species Akodon (Akodon) surdus Thomas 1917

Species Akodon (Akodon) sylvanus Thomas 1921

Species Akodon (Akodon) toba Thomas 1921

Species Akodon (Akodon) torques Thomas 1917

Species Akodon (Akodon) varius Thomas 1902

Discussion: Akodontini. The morphotypical akodontine genus stands at the nexus of a host of specific-and generic-level taxonomic problems, but a review of all classificatory variations would be more confusing than enlightening. The nomenclatural history of the following genus-group taxa has been significantly, at times confusingly, intertwined with that of Akodon : Abrothrix , Bolomys , Chalcomys , Chroeomys , Deltamys , Hypsimys , Microxus , Necromys , Thalpomys , and Thaptomys (especially see Cabrera, 1961; Ellerman, 1941; Gyldenstolpe, 1932; Massoia and Pardiñas, 1993; Reig, 1984, 1987; Tate, 1932 g; Thomas, 1916 c). See accounts of Abrothrix (including Chroeomys ), Deltamys , Necromys (including Bolomys ), Thalpomys , and Thaptomys for history and arguments on their generic status. Divorced of these taxa, those Akodon species thus far surveyed in allozymic and gene-sequence studies represent a monophyletic clade on resultant trees ( Barrantes et al., 1993; D’Elía, 2003; D’Elía et al., 2003; Smith and Patton, 1993, 1999). The formation of species groups is a taxonomic edifice still under construction, with contradictory views over membership apparent in initial attempts (e.g., Hershkovitz, 1990 c; Myers, 1989; Myers and Patton, 1989; Myers et al., 1990; Rieger et al., 1995) and many species unassociated for want of convincing study.

Renewed interest in basic revisionary study is rendering species definitions and distributional limits of akodonts less imposing (see especially Apfelbaum and Reig, 1989; Hershkovitz, 1990 c; Myers, 1989; Myers and Patton, 1989; Myers et al., 1990; Patton and Smith, 1992; Patton et al., 1989; Reig, 1987). Distributions, morphological traits, karyotypes, and nomenclatural problems of Peruvian species reviewed by Patton and Smith (1992). Although much improved, inconsistent taxonomic treatment of many species-group epithets and unnamed populations with distinctive karyotypes (e.g., Geise et al., 2001; Pardiñas et al., 2003 a; Silva and Yonenaga-Yassuda, 1998) advise continued intense alpha-level attention, including regular citation of voucher specimens. Galliari et al. (1996) highlighted names that have appeared in the literature (diminutus, massoiai, minoprioi, sarmientoi), but were never properly described and are considered nomina nuda (also see Braun et al., 2000) .