Calomys callidus Thomas 1916

Calomys callidus Thomas 1916, Ann. Mag. Nat. Hist., ser. 8, 17: 182.

Type Locality: Argentina, Corrientes Prov., Goya, 600 ft (183 m).

Vernacular Names: Reclusive Laucha.

Distribution: EC Argentina and E Paraguay.

Conservation: IUCN – Lower Risk (lc).

Discussion: Diagnosed as a subspecies of C. venustus and recognized as such (e.g., Cabrera, 1961) until Hershkovitz (1962) placed both in synonymy with C. callosus callosus . Specific status of callidus affirmed by Corti et al. (1987), who summarized its distribution, karyotypic traits, and morphometric discrimination; banded chromosomal comparisons with C. venustus and systematic commentary provided by Vitullo et al. (1990).