Project 556: R.S. Voss, M. Weksler. 2009. On the Taxonomic Status of Oryzomys curasoae McFarlane and Debrot, 2001, (Rodentia: Cricetidae: Sigmodontinae) with Remarks on the Phylogenetic Relationships of O. gorgasi Hershkovitz, 1971. Caribbean Journal of Sciences. 45 (1):73-79.
Specimen: Oryzomys palustris (unvouchered)


The type material of Oryzomys curasoae McFarlane and Debrot, 2001, an allegedly extinct spe- cies from the island of Curaçao, Netherlands Antilles, is morphologically indistinguishable from O. gorgasi Hershkovitz, 1971, a Recent mangrove-inhabiting species from mainland Venezuela. A phylogenetic analysis suggests that the latter belongs to the genus Oryzomys in its strictest sense, and that “curasoae” is not close to Oecomys (formerly ranked as a subgenus of Oryzomys) as previously suggested. Evidence that Rattus rattus may now be displacing O. gorgasi from coastal habitats in Venezuela suggests that black rats might have been directly responsible for the extinction of the insular population of O. gorgasi on Curaçao.

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Article DOI:

Project DOI: 10.7934/P556,
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MorphoBank Project 556
  • Creation Date:
    19 July 2011
  • Publication Date:
    18 May 2015
  • Project views: 15910

    Authors' Institutions

    • American Museum of Natural History


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    MorphoBank Curator
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    Maureen Admin
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    Robert Voss
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    Marcelo Weksler
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