Necromys obscurus (Waterhouse 1837)

[Necromys] obscurus (Waterhouse 1837), Proc. Zool. Soc. Lond., 1837: 16.

Type Locality: Uruguay, Maldonado Dept., Maldonado.

Vernacular Names: Dark-furred Akodont.

Synonyms: Necromys scagliarum Galliari and Pardiñas 2000 .

Distribution: Isolated populations along coastal areas in S Uruguay ( obscurus) and Buenos Aires Prov., EC Argentina ( scagliarum).

Conservation: IUCN – Lower Risk (lc) as Bolomys obscurus .

Discussion: Type species of Cabreramys (Massoia and Fornes, 1967), a taxon considered a junior synonym of Bolomys by Reig (1978, 1987) and of Necromys by Massoia and Pardiñas (1993). Formerly contained benefactus as a subspecies (see above account). Geographic variation and allopatric distribution in light of late Pleistocene climatic changes discussed by Galliari and Pardiñas (2000). The strong morphometric differentiation between and probable long-term isolation of the named populations, as demonstrated by the latter authors, recommend reconsideration of their status using other information sources.