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SPECIES Oryzomys macconnelli

Author:Thomas, 1910.
Citation:Ann. Mag. Nat. Hist., ser. 8, 6: 186.
Common Name:MacConnell’s Oryzomys
Type Locality:Guyana, Demerara Dist., Supenaam River, a tributary of the Lower Essequibo.
Distribution:Tropical evergreen rain forest, sea level to 1524 m, of SC Colombia, E Ecuador and Perú, eastwards to S Venezuela, Guianas, and N Brazil (see Musser et al., 1998:Fig. 78).
Status:IUCN – Lower Risk (lc).
Comments:Included in O. capito (= O. megacephalus) by Hershkovitz (1960) but retained as species by Cabrera (1961). Morphological and karyotypic basis for species recognition reinforced by Pine (1973), Gardner and Patton (1976), and Husson (1978) (and see comments under O. megacephalus). Musser et al. (1998) contributed a synopsis of its distribution, chromosomal variation, and morphological discrimination from related oryzomyines; differences in karyotype and cytochrome b haplotypes (Patton et al., 2000) intimate that macconnelli as presently defined is a composite of two species. Phylogeographic relationships among populations of O. macconnelli and between O. macconnelli and other nitidus group species examined by Costa (2003).



    incertus J. A. Allen, 1913
    mureliae J. A. Allen, 1915

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