Oryzomys alfaroi (J. A. Allen, 1891)

Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, Mammal Species of the World (2 nd Edition), Washington and London: Smithsonian Institution Press, pp. 501-755 : 720

Oryzomys alfaroi (J. A. Allen, 1891) . Bull. Am. Mus. Nat. Hist., 3:214.

TYPE LOCALITY: Costa Rica, Alajuela Prov., San Carlos .

DISTRIBUTION: Lowland to lower montane forests from S Tamaulipas and Oaxaca, Mexico, through Middle America, to W Colombia and Ecuador.

SYNONYMS: agrestis , dariensis, gloriaensis, gracilis , incertus (of J. A. Allen, 1908), intagensis, palatinus , palmirae.

COMMENTS: Goldman (1918) forged a broad definition of the species, expanded more so by Hall and Kelson (1959), which encompassed many forms previously treated as distinct (e.g., Merriam, 1901). We recognize chapmani , rhabdops , and saturatior as species (revision in progress). Oryzomys alfaroi proper may be more closely related to melanotis-rostratus than to the chapmani-saturatior group. Karyotype reported by Haiduk et al. (1979) and Engstrom (1984).