Rediscovery of the Dinagat Bushy-tailed Cloud Rat Crateromys australis (Musser, Heaney & Rabor, 1985) (Mammalia: Rodentia: Muridae) from Dinagat Island, Philippines.

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Milada Řeháková
Václav Řehák
William L.R. Oliver


The Dinagat Bushy-tailed Cloud Rat Crateromys australis belongs to the group of Cloud Rats, arboreal and folivorous nocturnal rodents endemic to the forests of the Philippines.  The species, endemic to a small island Dinagat in the Philippines, was discovered and captured in 1975.  Since then, despite repeated surveys, no specimen was found until 2012.  It is listed as Critically Endangered by IUCN Red List and was even believed to be extinct.  Finally, Dinagat Bushy-tailed Cloud Rat was rediscovered in January 2012 and its presence confirmed on Dinagat Island.  The rediscovery of this species underlines the local, national and international importance of Dinagat Island (or Dinagat-Siargao cluster of islands), as the most distinct subcentre of species endemism within the Greater Mindanao Faunal Region.  Unfortunately, only one locally protected area exists on the whole island and none of the last remaining native forest habitats on Dinagat are currently protected at the national level.  Mining and habitat destruction constitute a serious threat to this species.  We believe that this rediscovery may provide some important and timely impetus and urgency to the need for a more rational, scientifically-based and island-wide, development program on Dinagat by also incorporating an island/region-wide biodiversity conservation strategy that would help ensure the effective, longer-term protection of the larger majority of the few remaining natural habitats in this region.


Article Details

Author Biographies

Milada Řeháková, Tarsius, o.s., NGO, Na Pěšině 267, Děčín, 405 05, Czech Republic; and Zoo Ústí nad Labem, Drážďanská 23, Ústí nad Labem, 400 07, Czech Republic

Milada Řeháková is a zoologist focusing on both in situ and ex situ conservation. She has broad experiences with fieldwork and is currently working as a researcher in Zoo Usti nad Labem and Tarsius, o.s., NGO. She is a leader of a research and conservation project focusing on the Philippine tarsier and other Philippine wildlife.  

Václav Řehák, Tarsius, o.s., NGO, Na Pěšině 267, Děčín, 405 05, Czech Republic

Václav Řehák assists on the research and conservation of the Philippine tarsier and other Philippine wildlife as the Tarsius NGO member focusing on fieldwork and technical support. 


William L.R. Oliver

William L.R. Oliver died in 2014



Brandon-Jones, D., A.A. Eudey, T. Geissmann, C.P. Groves, D.J. Melnick, J.C. Morales, M. Shekelle & C.B. Stewart (2004). Asian primate classification. International Journal of Primatology 25: 97–164;

Brown, R.M., J.A. Weghorst, K.V. Olson, M.R.M. Duya, A.J. Barley, L.V. Duya, M. Shekelle, I. Neri-Arboleda, J.A. Esselstyn, N.J. Dominy, P.S. Ong, G.L. Moritz, A. Luczon, M.L.D. Diesmos, A.C. Diesmos & C.D. Siler (2014). Conservation genetics of the Philippine Tarsier: cryptic genetic variation restructures conservation priorities for an island archipelago primate. PLoS ONE 9:e104340;

Conservation International Philippines, Department of Environment and Natural Resources - Protected Areas and Wildlife Bureau &

Haribon Foundation (2006). Priority Sites for Conservation in the Philippines: Key Biodiversity Areas. Quezon City, Philippines.

Heaney, L.R., M.L. Dolar, D.S. Balete, J.A. Esselstyn, E.A. Rickart & J.L. Sedlock (2010). Synopsis of the Philippine mammals. The Field Museum of Natural History and The Philippine Departement of Environmental and Natural Resources, Protected areas and Wildlife Bureau, Chicago.

Mallari, N.A.D., B.R. Tabaranza & M.J. Crosby (2001). Key Conservation Sites in The Philippines. Bookmark, Makati City, 485pp.

Musser, G.G., L.R. Heaney & D.S. Rabor (1985). Philippine rats: Description of a new species of Crateromys from Dinagat Island. American Museum Novitates 2821: 1–25.

Oliver, W.L.R. & C.R. Cox (1990) Distribution and status of the Philippine Cloud Rats. Unpublished Report, 33pp.

Oliver, W.L.R., C.R. Cox, P.C. Gonzales & L.R. Heaney (1993) Cloud rats in the Philippines - preliminary report on distribution and status. Oryx 27: 41–48.

Ong, P.S., L.E. Afuang & R.G. Rosell-Ambal (eds.) (2002). Philippine Biodiversity Conservation Priorities: A Second Iteration of the National Biodiversity Strategy and Action Play. Department of Environment and Natural Resources, Protected Areas and Wildlife Bureau, Conservation International Philippines, Biodiversity Conservation Program, University of the Philippines Center for Integrative and Development Studies, and Foundation for the Philippine Environment, Quezon City, Philippines.

Ong, P., B.Tabaranza, G.Rosell-Ambal, D. Balete & L. Heaney (2008).Crateromys australis. The IUCN Red List of Threatened Species. Version 2014.3.

Pedregosa-Hospodarsky, M. (1990). Conservation of the Dinagat tarsier and other threatened and endemic species of Dinagat Island, Dinagat Province, Philippines - distribution and status survey.Unpublished report, 33pp.

Pedregosa-Hospodarsky, M. (2009). Conservation of the Dinagat Tarsier (Tarsius syrichta carbonarius) and other threatened endemic mammals of Dinagat Island, Dinagat Province, Philippines. Distribution and status survey. Final report.