Crocidura rapax
| Crocidura rapax | ||||||||||||
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| Scientific name | ||||||||||||
| Crocidura rapax | ||||||||||||
| G. Allen , 1923 |
Crocidura rapax is a species of shrew from the genus of white-toothed shrews ( Crocidura ). It occurs in southern China as well as in the adjacent northeastern India and on the island of Taiwan and other islands.
features
With a head-trunk length of 5.6 to 7 centimeters, Crocidura rapax is one of the medium-sized shrew species of Eurasia . The tail reaches a length of 38 to 47 millimeters. The rear foot is 11 to 13 millimeters long. In its appearance it corresponds to the species Crocidura vorax , the back fur is, however, clearly darker brown and the belly side is almost as dark, but gray-brown. The tail is monochrome dark brown over the entire length; it has longer tentacles only in the basal third.
| 1 | · | 3 | · | 1 | · | 3 | = 28 |
| 1 | · | 1 | · | 1 | · | 3 |
The skull has a base length of 17.4 to 18.3 millimeters. Like all species of the genus, the species has one incisor per half in the upper jaw and then three single-pointed teeth, a premolar and three molars . In the lower jaw, however, it has a single canine behind the incisor. In total, the animals have a set of 28 teeth. As with all white-toothed shrews, the tooth roots are not pigmented in contrast to those of the red- toothed shrews.
distribution
Crocidura rapax occurs in southern China as well as in the adjacent northeast of India and on the island of Taiwan and other islands. The subspecies Crocidura rapax kurodai lives in Taiwan , while Crocidura rapax rapax occurs in southern China including the island of Hainan and the Indian part of the range. Crocidura rapax lutaoensis is found on Lu Dau Island (Green Island) and Crocidura rapax tadae is found on Lan Yu (Orchid Island).
Way of life
As with many shrew species, the way of life of Crocidura rapax is largely unexplored; almost no data are available here. Like all shrews, this type of invertebrate feeds primarily on insects and worms.
Systematics
Crocidura rapax is classified as an independent species within the genus of white-toothed shrews ( Crocidura ), which consists of around 170 species. The first scientific description comes from G. Allen from 1923, who described an individual from the Mekong in the province of Yunnan in the south of the People's Republic of China. It was formerly classified together with other species such as Crocidura vorax in the species Crocidura gueldenstaedtii , Crocidura russula or Crocidura pullata , but Crocidura kurodai was separated from this in 1997 and 2001. In 2002, Crocidura kurodai was combined with the island forms on Taiwan and several neighboring islands that were formerly grouped under Crocidura horsfieldii due to consistent karyological data to the species Crocidura rapax , but due to various differences in phenotype they are considered as subspecies.
Within the species, in addition to the nominate form Crocidura rapax rapax with Crocidura rapax kurodai , Crocidura rapax lutaoensis , and Crocidura rapax tadae, three further subspecies are distinguished.
Threat and protection
Crocidura rapax is not classified in a hazard category by the International Union for Conservation of Nature and Natural Resources (IUCN) due to a lack of data on population size, ecological demands and threats, but instead classified without sufficient data (data deficient).
literature
- Robert S. Hoffmann, Darrin Lunde: Chinese White-toothed Shrew. In: Andrew T. Smith , Yan Xie: A Guide to the Mammals of China. Princeton University Press, Princeton NJ 2008, ISBN 978-0-691-09984-2 , pp. 300-301.
Web links
- Crocidura rapax inthe IUCN 2013 Red List of Threatened Species . Listed by: AT Smith, CH Johnston, 2008. Retrieved January 19, 2014.
supporting documents
- ↑ a b c d e Robert S. Hoffmann, Darrin Lunde: Chinese White-toothed Shrew. In: Andrew T. Smith , Yan Xie: A Guide to the Mammals of China. Princeton University Press, Princeton NJ 2008, ISBN 978-0-691-09984-2 , pp. 300-301.
- ↑ a b c Crocidura rapax in the IUCN Red List of Threatened Species 2013.2. Listed by: AT Smith, CH Johnston, 2008. Retrieved January 19, 2014.
- ↑ a b c d Crocidura rapax ( Memento of the original from February 3, 2014 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. . In: Don E. Wilson , DeeAnn M. Reeder (Eds.): 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 .
