Mylomys rex (Thomas, 1906:304)

Ethiopian mylomys



Taxonomy & Nomenclature

Synonym/s: Arvicanthis rex Thomas, 1906:304; Desmomys rex Thomas, 1906:304


There is uncertainty over the taxonomic validity of this species (Dieterlen, 1974; Yalden et al. 1976; Musser & Carleton, 2005; Lavrenchenko, 2008).


Conservation Status


Last record: 30 May 1905 (Thomas, 1906:304); 1906 (Martin et al., 2023)

IUCN RedList status: Data Deficient



Kaffa, Charada Forest, Ethiopia (central)


Biology & Ecology




Only known from the holotype, a skin minus the skull.






Original scientific description:

Thomas, Oldfield. (1906). New Mammals collected in North-east Africa by Mr Zaphiro, and presented to the British Museum by W. N. McMilan, Esq. The Annals and magazine of natural history*, ser. 7, 18: 304.


Other references:

Dieterlen, F. (1974). Bemerkungen zur Systematik der Gattung Pelomys (Muridae; Rodentia) in Äthiopien. Zeitschrift für Säugetierkunde 39: 229-231.

Lavrenchenko, L. A. (2003). A contribution to the systematics of Desmomys Thomas, 1910 (Rodentia, Muridae) with the description of a new species. Bonner Zoologische Beiträge, 50(4): 313-327.

Lavrenchenko, L. (2008). Mylomys rex. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. ( Downloaded on 02 February 2014.

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)]

Musser, G. G. and Carleton, M. D. (1993). Family Muridae, pp. 501-755, in: Mammal species of the world, a taxonomic and geographic reference, Second ed. (D. E. Wilson and D. M. Reeder, eds.). Smithsonian Institution Press, Washington D.C., xviii + 1206 pp.

Musser, G. G. and Carleton, M. D. (2005). Mylomys rex. Superfamily Muroidea. In: D. E. Wilson and D. A. Reeder (eds), Mammal Species of the World: a geographic and taxonomic reference, pp. 894-1531. The John Hopkins University Press, Baltimore, USA.

Tafesse , Israel Sebsibe and Yohannes, Yordanos Berihun. (2022). New conservation status for data-deficient endemic mammals of East Africa. Journal for Nature Conservation 65: 126121.

Thomas, Oldfield. (1916). On the rats usually included in the genus Arvicanthis. Annals and Magazine of Natural History, ser. 8, 18: 67-70.

Yalden, D. W., M. J. Largen, and D. Kock. (1976). Catalogue of the mammals of Ethiopia. 2. Insectivora and Rodentia. Monitore Zoologico Italiano, Supplemento 8(1): 1-118.

Yalden, D. W., M. J. Largen, D. Kock and J. C. Hillman. 1996. Catalogue of the mammals of Ethiopia and Eritrea. 7. Revised checklist, zoogeography and conservation. Tropical Zoology 9: 73-164.


* The full title of this journal is "The Annals and magazine of natural history; zoology, botany, and geology being a continuation of the Annals combined with Loudon and Charlesworth's Magazine of Natural History."



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