Sigmodontomys alfari J. A. Allen 1897

Sigmodontomys alfari J. A. Allen 1897, Bull. Am. Mus . Nat. Hist., 9: 39.

Type Locality: Costa Rica, Limón Prov., 3 mi (5 km) E Guápiles, Jiménez, 700 ft (213 m).

Vernacular Names: Short-tailed Sigmodontomys.

Synonyms: Sigmodontomys barbacoas (J. A. Allen 1916); Sigmodontomys efficax Goldman 1913; Sigmodontomys esmeraldarum Thomas 1901; Sigmodontomys ochraceus (J. A. Allen 1908); Sigmodontomys ochrinus (Thomas 1921); Sigmodontomys russulus (Thomas 1897) .

Distribution: Lowland forest from E Honduras to Panamá; C and W Colombia to NW Venezuela and NW Ecuador (see Musser et al., 1998:Fig. 51).

Conservation: IUCN – Lower Risk (lc).

Discussion: Karyotype reported by Gardner and Patton (1976). Musser et al. (1998) summarized locality records and compared them with other oryzomyines having trans-Andean distributions.