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SPECIES Oryzomys alfaroi

Author:J. A. Allen, 1891.
Citation:Bull. Am. Mus. Nat. Hist., 3: 214.
Common Name:Alfaro’s Oryzomys
Type Locality:Costa Rica, Alajuela Prov., San Carlos.
Distribution:Lowland to lower montane forests from S Tamaulipas and Oaxaca, México, through Middle America, to W Colombia and Ecuador.
Status:IUCN – Lower Risk (lc).
Comments:Goldman (1918) forged a broad definition of the species, expanded more so by Hall and Kelson (1959), that encompassed many forms previously treated as distinct (e.g., Merriam, 1901a). 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).



    agrestis Goodwin, 1959
    dariensis Goldman, 1915
    gloriaensis Goodwin, 1956
    gracilis Thomas, 1894
    incertus J. A. Allen, 1908
    intagensis Hershkovitz, 1940
    palatinus Merriam, 1901
    palmirae J. A. Allen, 1912

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