Oryzomys seuanezi Weksler, Geise, and Cerqueira 1999

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 : 1154

Oryzomys seuanezi Weksler, Geise, and Cerqueira 1999

Oryzomys seuanezi Weksler, Geise, and Cerqueira 1999 , Zool. J. Linn. Soc., 125: 454.

Type Locality: Brazil, Rio de Janeiro State, Casimiro de Abreu Municipality, Fazenda União, 50 m; 22º25′S, 42º02′W.

Vernacular Names: Seuanez's Oryzomys.

Distribution: Atlantic Forest, SE Brazil.

Discussion: Morphometric and karyological comparisons with other Brazilian members of the O. megacephalus complex provided by Weksler et al. (1999); a sister species to O. oniscus (or O. laticeps sensu Musser et al., 1998 ). The level of differentiation of this species from Lund’s (1840) laticeps , identified by Musser et al. (1998) as the senior synonym for the large megacephalus like form of the Atlantic Forest region, deserves further examination.