Indonesian smooth fur rat

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Indonesian smooth fur rat
Systematics
Family : Long-tailed mice (Muridae)
Subfamily : Old World Mice (Murinae)
Tribe : Rattini
Rattus group
Genre : Rats ( rattus )
Type : Indonesian smooth fur rat
Scientific name
Rattus adustus
Sody , 1940

The Indonesian smooth fur rat ( Rattus adustus ) is a very likely extinct rat species . It is only known from the holotype collected on April 15, 1936 from the Indonesian island of Enggano and has not been rediscovered since then. Their habitat has been almost completely destroyed, possibly the stock went through the competition with entrained house rat back.

features

The only known specimen of the Indonesian smooth-fur rat is a very young adult female specimen. The head-trunk length is 180 mm, the tail length 148 mm, the ear length 22 mm and the hind foot length 42 mm. No information is available on weight. The Indonesian smooth-fur rat is medium-sized and has a short, rough coat that is interspersed with many hard bristles. The back is very dark brown, the belly is dark brownish-gray. The tail is black. The ears are dark. The tail length is 82 percent shorter than the head-trunk length. The skull is longer than that of the closely related enggano rat ( Rattus enganus ). There are five pairs of teats , two on the chest and three in the groin. The foramen incisivum is wider than in the Simalurian rat ( Rattus simalurensis ), but narrower than in the Tawi-Tawi wood rat.

distribution and habitat

The Indonesian smooth-fur rat is only known from Enggano, an island west of Sumatra . Their habitat was likely limited to forested habitats .

Taxonomy

Henri Jacob Victor Sody first described Rattus adustus as an independent species, but later (Sody, 1941) listed it as a subspecies of the house rat ( Rattus rattus ) in a section that also included Rattus lugens ( Syn . : Rattus mentawai ), an endemic of the Mentawai- Islands , contained. Morphologically and geographically Rattus adustus is related to Rattus lugens , both are related to Rattus simalurensis . These three species are in turn closely related to Rattus tiomanicus .

literature

  • Christiane Denys , Peter John Taylor , Connor Burgin, Ken Aplin, Pierre-Henri Fabre, Rudolf Haslauer, John Woinarski, Bill Breed, James Menzies: Family Muridae (Old World Mice) In: Handbook of the Mammals of the World. Volume 7: Rodents II, Lynx Edicions, Barcelona 2017, ISBN 978-84-16728-04-6 , p. 836

Individual evidence

  1. a b c d Rattus adustus in the IUCN Red List of Threatened Species 2012.1. Posted by: K. Aplin, D. Lunde, 2008. Retrieved September 5, 2012.
  2. a b J. H. Becking: Henri Jacob Victor Sody (1892-1959). His Life and Work. A biographical and bibliographical study. Brill Academic Publishers, Leiden et al. 1989, ISBN 90-04-08687-0 , p. 59.
  3. Guy G. Musser, Lawrence R. Heaney: Philippine Rattus: A New Species from the Sulu Archipelago. In: American Museum Novitates. No. 2818, 1985, ISSN  0003-0082 , pp. 1-32, online .
  4. Don E. Wilson , DeeAnn M. Reeder (Ed.): Mammal Species of the World. A taxonomic and geographic Reference. Volume 2. 3rd edition. Johns Hopkins University Press, Baltimore MD 2005, ISBN 0-8018-8221-4 , p. 1473.

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