Deltamys kempi Thomas 1917

Deltamys kempi Thomas 1917, Ann. Mag. Nat. Hist., ser. 8, 20: 98.

Type Locality: Argentina, Buenos Aires Prov., Río Paraná Delta, La Plata Estuary, Isla Ella, 1 m.

Vernacular Names: Kemp's Akodont.

Synonyms: Deltamys langguthi Massoia 1980; Deltamys langguthi González and Massoia 1995 .

Distribution: EC Argentina, Uruguay, and SE Brazil (Rio Grande do Sul —González and Massoia, 1995; also see D’Elía et al., 2003:Fig. 1).

Conservation: IUCN – Lower Risk (lc) as Akodon kempi .

Discussion: Distribution and ecology reviewed by Massoia (1964); karyotype (2n = 35-38, FN = 38) and unique sex-determining mechanism described by Sbalqueiro et al. (1984) and Castro et al. (1991). Status of populations exhibiting different karyotypes (Castro et al., 1991) warrants further investigation. See González and Pardiñas (2002, Mammalian Species, 711).