Aegialomys galapagoensis galapagoensis Waterhouse, 1839:66

San Cristobal Island rice rat, Chatham Island rice rat



Taxonomy & Nomenclature

Synonym/s: Oryzomys galapagoensis Waterhouse, 1839:66


Possibly conspecific with the surviving subspecies A. g. bauri (Cabrera, 1961; Patton & Hafner, 1983).


Conservation Status

Last record: 1835 (Goodwin & Goodwin, 1973)

IUCN RedList status: Extinct



San Cristobal (=Chatham Island), Galapagos Islands












Cabrera, A. (1961). Catálogo de los mamíferos de América del Sur. Revista del Museo Argentino de Ciencias Naturales "Bernardino Rivadavia". Ciencias Zoológicas 4(2): v-xxii + 309-732.

Dowler, R. C. (2000). Rediscovery of rodents (Genus Nesoryzomys) considered extinct in the Galapagos Islands. Oryx 34(2): 109-118.

Gardner, A. L. and Patton, J. L. (1976). Karyotypic variation in oryzomyine rodents (Cricetinae) with comments on chromosomal evolution in the Neotropical cricetine complex. Occasional Papers of the Museum of Zoology, Louisiana State University 49: 1-48.

Goodwin, Harry A. and Goodwin, J. M. (1973). List of mammals which have become extinct or are possibly extinct since 1600. Int. Union Conserv. Nat. Occas. Pap. 8: 1-20.

Patton, J. L. and Hafner, M. S. (1983). Biosystematics of the native rodents of the Galapagos Archipelago, Ecuador. In: Bowman, R. I., Benson, M. and Leviton, A. E. (eds.). Patterns of Evolution in Galapagos Organisms, pp. 539-568.

Percequillo, A. R. (2015): Mammals of South America, Volume 2: Rodents. Genus Aegialomys. University of Chicago Press.

do Prado, Joyce Rodrigues and Percequillo, Alexandre Reis. (2016). Systematic studies of the genus Aegialomys Weksler, Percequillo and Voss, 2006 (Rodentia: Cricetidae: Sigmodontinae): Annotated catalogue of the types of the species-group taxa. Zootaxa 4144(4): 477-498.

Tirira, D. (2017): A Field Guide to the Mammals of Ecuador. Publicaciones Especiales sobre los Mamíferos del Ecuador no. 10. Editorial Murciélago Blanco.

Tirira, D., Boada, C. & Weksler, M. (2008). Aegialomys galapagoensis. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. ( Downloaded on 23 December 2012.


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