Ctenomys porteousi Thomas 1916

Ctenomys porteousi Thomas 1916, Ann. Mag. Nat. Hist., ser. 8, 18: 304.

Type Locality: Argentina, Buenos Aires Prov., Bonifacio.

Vernacular Names: Porteous's Tuco-tuco.

Distribution: Buenos Aires and La Pampa Provs. (E Argentina).

Conservation: IUCN – Lower Risk (lc).

Discussion: Cabrera (1961) included australis in porteousi; but see Contreras and Reig (1965) and Roig and Reig (1969:670) who considered australis as a distinct species. Placed in the mendocinus group by Massarini et al. (1991 a). Karyotype has 2n=47-48 and FN=71-73 (Massarini et al., 1991 a). Although populations of porteousi demonstrate both highly polymorphic karyotypes and high allozymic heterozygosity, Massarini et al. (1992) inferred high rates of gene flow to account for the homogeneity observed among local populations. See comments under azarae .