Oryzomys laticeps (Lund 1840)

[Oryzomys] laticeps (Lund 1840), Preprint of 1841 K. Dansk. Vidensk. Selskav Afhandl., Kjobenhavn, 8: 279.

Type Locality: Brazil, Minas Gerais State, valley of the Rio das Velhas, Lagoa Santa.

Vernacular Names: Atlantic Forest Oryzomys.

Synonyms: Oryzomys oniscus Thomas 1904; Oryzomys saltator (Winge 1887) .

Distribution: Atlantic Forest region of SE Brazil.

Conservation: IUCN – Lower Risk (nt) as O. oniscus .

Discussion: Lectotype selected, synonyms identified, and morphological separation from O. megacephalus and related oryzomyines elaborated by Musser et al. (1998); includes oniscus, previously recognized as a separate species (e.g., Gyldenstolpe, 1932; Moojen, 1952; Musser and Carleton, 1993). Cladistic interpretation of cytochrome b data reveals a sister-species relationship between O. laticeps and O. perenensis (Patton et al., 2000) .