Mass: 19.1 g based on Boiani et al. 2007, Cirignoli et al. 2011, and Weksler and Bonvicino 2005

Abundance: 1.39 to 44.85% (median 9.40%)

Latitudinal range: -34.6° to -21.2°

Habitats: temperate broadleaf/mixed forest (2), temperate savanna (3), tropical/subtropical dry broadleaf forest (4), tropical/subtropical savanna (3)

Found in 12 samples

Argentina: Santa Fe City, Buenos Aires Province, Exaltación de la Cruz (autumn), Exaltación de la Cruz (spring), Chucul

Brazil: Angatuba (native vegetation), Angatuba (abandoned pasture), Angatuba (Eucalyptus forest), Campos de Altitude, Universidade Federal de Lavras (Floresta Estacional Semidecidual Montana), Universidade Federal de Lavras (Cerrado Sensu Strictu), Devonian Scarp

♂ body mass	20 g	N = 1	Boiani et al. 2007
♂ body mass	30 g	N = 1	Boiani et al. 2007
body mass	17.1 g	N = 4	Cirignoli et al. 2011
body mass	18.8 g	N = 4	Weksler and Bonvicino 2005
condyloincisive length	20.0 mm	N = 41	Weksler and Bonvicino 2005
ear length	13.37 mm	N = 4	Cirignoli et al. 2011
ear length	13.97 mm	N = 20	Olds and Anderson 1987
ear length	15.0 mm	N = 4	Weksler and Bonvicino 2005
head and body length	87.8 mm	N = 4	Weksler and Bonvicino 2005
hind foot length	23.9 mm	N = 4	Cirignoli et al. 2011
hind foot length	25.21 mm	N = 20	Olds and Anderson 1987
hind foot length	23.5 mm	N = 4	Weksler and Bonvicino 2005
skull length	23.41 mm	N = 20	Olds and Anderson 1987
skull length	22.5 mm	N = 38	Weksler and Bonvicino 2005
skull width	12.05 mm	N = 20	Olds and Anderson 1987
skull width	12.0 mm	N = 37	Weksler and Bonvicino 2005
tail length	99 mm	N = 4	Cirignoli et al. 2011
tail length	110.37 mm	N = 20	Olds and Anderson 1987
tail length	109.7 mm	N = 3	Weksler and Bonvicino 2005
total body length	176.3 mm	N = 4	Cirignoli et al. 2011
total body length	198.56 mm	N = 20	Olds and Anderson 1987
upper tooth row length	3.22 mm	N = 20	Olds and Anderson 1987
upper tooth row length	3.2 mm	N = 41	Weksler and Bonvicino 2005

See also Oligoryzomys, Oligoryzomys O. flavescens-O. fornesi, Oligoryzomys chacoensis, Oligoryzomys fornesi, Oligoryzomys fulvescens, Oligoryzomys longicaudatus, Oligoryzomys microtis, Oligoryzomys nigripes, Oligoryzomys sp., Oligoryzomys spp.