Ear spot croissant
| Ear spot croissant | ||||||||||||
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Ear spot squirrel ( Callosciurus adamsi ) |
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| Scientific name | ||||||||||||
| Callosciurus adamsi | ||||||||||||
| ( Kloss , 1921) |
The ear spot squirrel ( Callosciurus adamsi ) is a species of squirrel from the genus of the real beautiful squirrel ( Callosciurus ). It occurs in the north of the island of Borneo .
features
The ear spot cone reaches a head-torso length of 15 to 17 centimeters and a weight of about 150 grams. The tail reaches a length of about 15 to 16 centimeters and is therefore about as long as the rest of the body. The back fur of the animals is colored brown. The underside is dull reddish, the fur on the underside consists of gray hair with red hair tips. The stomach side is sharply separated from the back side by a white and an overlying dark line. In its appearance it corresponds very closely to the somewhat larger banana squirrel ( Callosciurus notatus ) and can be distinguished from it mainly by a sand-colored spot behind the ear.
distribution
The ear spot squirrel occurs in the north of the island of Borneo in the Malay provinces of Sabah and Sarawak as well as in the Sultanate of Brunei .
Way of life
Very little data and observations are available on the way of life of the ear spot squirrel. As a habitat, it primarily uses the forests of two-winged fruit trees in the flat and mountainous regions, but above all below the distribution limit of the Borneo black- banded squirrel ( Callosciurus orestes ) and regionally, especially in Sarawak, up to heights of 900 meters. Like all other species of the genus, the species is primarily arboric ( arboricol ). It probably also feeds primarily on plants, and more rarely on insects.
Systematics
The ear spot squirrel is classified as an independent species within the genus of the real beautiful squirrel ( Callosciurus ), which consists of 15 species. The first scientific description comes from Cecil Boden Kloss from 1921, who described the species from Sungai Baram in the Malay province of Sarawak. Kloss named the species after Baram's district officer , CW Adam, following the request of the collector and Kloss supervisor at the Raffles Museum in Singapore, John Coney Moulton , who named it for Adam's help with the Sarawak expedition wanted to thank you.
Apart from the nominate form, no further subspecies are distinguished within the species .
Status, threat and protection
The ear spot squirrel is classified by the International Union for Conservation of Nature and Natural Resources (IUCN) as endangered (Vulnerable). The species occurs almost exclusively in lowland forests, in which forest activity and deforestation are very high, in the converted habitats the species cannot exist. According to the IUCN, more than 30% of the forests in the range of the species have been cleared in the last 10 years and it is assumed that in the next decade another 40% of the now existing habitat will disappear and be converted into plantations.
supporting documents
- ↑ a b c d 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. 134-135.
- ↑ a b c Callosciurus adamsi In: Don E. Wilson , DeeAnn M. Reeder (Ed.): Mammal Species of the World. A taxonomic and geographic Reference. 2 volumes. 3. Edition. Johns Hopkins University Press, Baltimore MD 2005, ISBN 0-8018-8221-4 .
- ↑ Bo Beolens, Michael Grayson, Michael Watkins: The Eponym Dictionary of Mammals. Johns Hopkins University Press, 2009; P. 3; ISBN 978-0-8018-9304-9 .
- ↑ a b Callosciurus adamsi in the IUCN Red List of Threatened Species 2014.2. Submitted by: JW Duckworth, E. Meijaard, 2008. Retrieved October 25, 2014.
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. 134-135.
Web links
- Callosciurus adamsi inthe IUCN Red List of Threatened Species 2014.2. Submitted by: JW Duckworth, E. Meijaard, 2008. Retrieved October 25, 2014.