Uromys siebersi Thomas, 1923:422

Kai Besar rat, Great Key Island uromys



Taxonomy & Nomenclature

Synonym/s: Uromys caudimaculatus siebersi Thomas, 1923:422


Conservation Status


Last record: 1923 or before?; 1924 (Martin et al., 2023)

IUCN RedList status: Data Deficient



Kai Besar island, Kai Islands, Indonesia


Biology & Ecology




Two skins and a skull.


NHMUK ZD 1923.4.3.12






Chiozza, F. (2008). Uromys siebersi. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.1. ( Downloaded on 30 July 2013.

Ellerman, J. R. (1941). The families and genera of living rodents. Vol. II. Family Muridae. British Museum (Natural History), London, UK.

Flannery, Timothy F. (1995). Mammals of the South-west Pacific and Moluccan Islands. Comstock/Cornell, Ithaca, NY, 464 pp. [p. 171]

Groves, Colin P. and Flannery, Timothy F. (1994). A revision of the genus Uromys Peters, 1867 (Muridae: Mammalia) with descriptions of two new species. Records of the Australian Museum 46(2): 145-170.

Laurie, E. M. O. and Hill, J. E. 1954. List of land mammals of New Guinea, Celebes and adjacent islands 1758-1952. Trustees of the British Museum (Natural History), London, UK.

Martin, Thomas E., Bennett, Gareth C., Fairbairn, Andrew J. and Mooers, A. Ø. (2023). ‘Lost’ taxa and their conservation implications. Animal Conservation 26(1): 14-24. [Appendix S2 (1617 taxa not seen >10 years); Appendix S3 (562 taxa not seen >50 years)]

Roycroft, Emily et al. (2022). New Guinea uplift opens ecological opportunity across a continent. Current Biology.

Rümmler, H. 1938. Die Systematik und Verbreitung der Muriden Neuguineas. Mitteilungen aus dem Zoologische Museum 23: 1-297.


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