Jentink croissants
| Jentink croissants | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Sundasciurus jentinki | ||||||||||||
| ( Thomas , 1887) |
The Jentink squirrel ( Sundasciurus jentinki ) is a squirrel from the genus of the Sunda tree squirrel ( Sundasciurus ). It occurs in the two subspecies S. j. jentinki and S. j. subsignanus ( Chasen , 1937) in Borneo . The Dutch zoologist Fredericus Anna Jentink is honored with the species epithet and the common name .
features
The males of the Jentink squirrel achieve a head-to-trunk length of 130.6 mm, a tail length of 125.2 mm and a weight of 60.0 g, the females a head-to-trunk length of 126.6 mm, a tail length 112.6 mm and a weight of 55.0 g. With the nominate form S. j. jentinki is quite light on top with brownish or creamy-white speckles. The underside is gray. The vibrissae , the eye ring and the edge of the ears are creamy white. The very thin tail is covered with reddish, black and white hair. The subspecies S. j. subsignanus has sand-colored instead of white tips on the tail hair.
distribution
The Jentink squirrel occurs in two subspecies on the Southeast Asian island of Borneo (Kalimantan): S. j. jentinki lives on Mount Kinabalu , in the Crocker Range, on Gunung Trus Madi in Sabah , in the border hills between Sabah and Sarawak as well as in the highlands of Kelabit and on other mountains in Sarawak. The distribution area of S. j. subsignanus extends from Long Petak to the Sungai Telen, Sungai Badang, and Sungai Kayan rivers in eastern Borneo.
Habitat and way of life
The Jentink croissant lives in mountain forests at altitudes above 900 m. It is diurnal and mainly foraging in the crowns of small trees. Here it often follows the flocks of birds when they are on the hunt for insects.
status
The IUCN classifies the Jentink croissant in the category “not endangered” ( least concern ). There are no known major threats to this species, but the conversion of the forest into arable land for potato and strawberry cultivation represents a potential threat. However, since the Jentink squirrel prefers hilly forests, most of the forest conversion takes place below its habitat.
literature
- Richard W. Thorington Jr., John L. Koprowski, Michael A. Steele: Squirrels of the World . Johns Hopkins University Press, Baltimore MD 2012, ISBN 978-1-4214-0469-1 , pp. 186-187 .
- Frederick Nutter Chasen: Two new mammals from Borneo . In: Bulletin of the Raffles Museum . tape 13 , 1937, pp. 80–81 ( online [PDF; 203 kB ; accessed on October 28, 2013]).
Web links
- Sundasciurus jentinki inthe IUCN 2013 Red List of Threatened Species . Posted by: Duckworth, JW & Meijaard, E., 2008. Retrieved October 25, 2013.