Oryzomys angouya (G. Fischer 1814)

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 : 1145

Oryzomys angouya (G. Fischer 1814)

[Oryzomys] angouya (G. Fischer 1814) , Zoognosia Tabulis Synopticis Illustrata: 71.

Type Locality: Paraguay, Misiones Dept., east of the Río Paraguay, 2.7 km (by road) N San Antonio (as fixed by neotype designation by Musser et al., 1998).

Vernacular Names: Angouya Oryzomys.

Synonyms: Oryzomys angouya (Desmarest 1819) ; Oryzomys anguya ( Rengger 1830) ; Oryzomys buccinatus ( Olfers 1818) ; Oryzomys leucogaster (Wagner 1845) ; Oryzomys paraganus Thomas 1924 ; Oryzomys ratticeps (Hensel 1872) ; Oryzomys rex ( Winge 1887) ; Oryzomys tropicius Thomas 1924 .

Distribution: SE Brazil, NE Argentina, and E Paraguay.

Conservation: IUCN – Lower Risk (lc) as O. buccinatus and O. ratticeps .

Discussion: Oryzomys angouya is the oldest available name based on Azara’s (1801) "Rat troisieme, ou Rat Angouya ," a species conventionally known as O. buccinatus and-or O. ratticeps ( Avila-Pires, 1960 a; Cabrera, 1961; Ellerman, 1941; Gyldenstolpe, 1932; Hershkovitz, 1959 a; Moojen, 1952; Musser and Carleton, 1993; Thomas, 1924 b). Morphology characterized, neotype designated, and synonyms attributed by Musser et al. (1998). Slight karyotypic variation, reflecting supernumerary chromosomes, reported for specimens from Rio de Janeiro, Brazil (2n = 80-82, FN = 88-90; Pereira et al., 2001).