|Scientific Name:||Hylaeamys oniscus (Thomas, 1904)|
Oryzomys oniscus Thomas, 1904
|Taxonomic Notes:||Oryzomys is a generic synonym (Weksler et al. 2006). This species is monotypic (Percequillo 2015).|
|Red List Category & Criteria:||Near Threatened ver 3.1|
|Assessor(s):||Percequillo, A. & Roach, N.|
This species is listed as Near Threatened because while its extent of occurrence (EOO) is greater than 90,000 km², its distribution is severely fragmented (its area of occupancy may be close to meeting the criterion B2 threshold), it is known from fewer than ten locations, and there is continuing decline in the extent and quality of its habitat, though it is common where it occurs.
|Previously published Red List assessments:|
|Range Description:||This species is endemic to the northeastern Atlantic Forest of Brazil. All known localities have been reported north of the Rio São Francisco in the states of Alagoas, Pernambuco, and Paraíba (Percequillo 2015). The area where this species occurs has experienced intense deforestation and most habitats occur only in fragmented patches (T. Lacher pers. comm).|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||This species is locally common. No recent population studies have been conducted. There is no information available, but sampling conducted by Brennand and Percequillo in 2008 in Alagoas, during the rainy season, recovered this species as the most abundant small mammal (Percequillo pers. comm).|
|Current Population Trend:||Decreasing|
|Habitat and Ecology:||This species has not been captured outside of forested areas and is currently confined to mosaics of severely fragmented remaining forested areas within a limited range.|
|Major Threat(s):||The major threats are habitat destruction, fragmentation and deforestation for sugar cane plantations. This species has a limited range in an area where much of the forest has been converted to agriculture and livestock.|
|Conservation Actions:||This species occurs in several protected areas, including Biological Reserve Saltinho.|
Brennand, P.GG., Languuth, A. and Percequillo, A.R. 2013. The genus Hylaeamys Weksler, Percequillo, and Voss 2006 (Rodentia: Cricetidae: Sigmodontinae) in the Brazilian Atlantic Forest: geographic variation and species definition. Journal of Mammalogy 94(6): 1346-1363.
Eisenberg, J.F. and Redford, K.H. 1999. Mammals of the Neotropics. The Central Neotropics. The University of Chicago Press, Chicago, USA.
IUCN. 2017. The IUCN Red List of Threatened Species. Version 2017-2. Available at: www.iucnredlist.org. (Accessed: 14 September 2017).
Musser, G.G. and Carleton, M.D. 2005. 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.
Percequillo, A.R. 2015. Genus Hylaeamys Weksler, Percequillo, and Voss, 2006. In: Patton, J.L., Pardiñas, U.F.J. and D’Elía, G. (eds), Mammals of South America, pp. 335-346. The University of Chicago Press.
Weksler, M., Percequillo, A.R. and Voss, R.S. 2006. Ten new genera of Oryzomyine rodents (Cricetidae: Sigmodontinae). American Museum Novitates 3537: 1-29.
|Citation:||Percequillo, A. & Roach, N. 2017. Hylaeamys oniscus. The IUCN Red List of Threatened Species 2017: e.T15608A22327982.Downloaded on 23 November 2017.|
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