David long-footed bat
| David long-footed bat | ||||||||||||
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| Myotis davidii | ||||||||||||
| ( Peters , 1869) |
The David long-footed bat ( Myotis davidii ) is a species of the mouse ears ( Myotis ) within the bats (Chiroptera). It is endemic to the People's Republic of China .
features
The David long-footed bat is a very small species of bat with a comparatively short tail. It reaches a head-torso length of 41 to 44 millimeters and a tail length of 30 to 43 millimeters. The hind feet are 7 to 9 millimeters long. The ears measure 12 to 15 millimeters. The forearm length is 31 to 35 millimeters, the calcar is long and the flight skin attaches to the basal part of the toes. The tibia is 12 to 13 millimeters long, so the length of the foot is more than half the length of the lower leg. The fur on the back is dark brown with slightly lighter tips, the underside is a bit lighter due to gray tips.
The skull is stocky with a very short snout region (rostrum). The third upper premolar P3 is small and shifted to the inner side opposite the row of teeth, whereby the neighboring premolars P2 and P4 are in direct contact. The lower premolar p3 is also reduced in size and displaced inwards, but here the neighboring premolars p2 and p4, which are also smaller, are not in contact.
distribution
The David long-footed bat is endemic to the People's Republic of China and has been recorded in the provinces of Beijing , Hebei , Gansu , Jiangxi , Fujian , Guizhou and on Hainan .
Way of life
No information is available about the bats' way of life and ecological requirements.
Systematics
The David long-footed bat is assigned to the mouse -eared bat (genus Myotis ) as an independent species . The first scientific description comes from the German natural scientist Wilhelm Peters from 1869, who described it using individuals from the region around Beijing and Hebei. In earlier work, the species was often considered a subspecies of the lesser whiskered bat ( Myotis mystacinus ).
Apart from the nominate form, no subspecies are distinguished within the species .
Hazard and protection
The species is classified by the International Union for Conservation of Nature and Natural Resources (IUCN) as not endangered ("least concern") due to the comparatively large distribution area and the lack of risks for a collapse of the population. However, no data is available on the stocks and populations, and there are no known risks to the species that could endanger the population.
supporting documents
- ↑ a b c d e f Don E. Wilson David's Myotis. In: Andrew T. Smith , Yan Xie: A Guide to the Mammals of China. Princeton University Press, 2008; Pp. 375-376, ISBN 978-0-691-09984-2 .
- ↑ a b Myotis davidii in the Red List of Threatened Species of the IUCN 2017-3. Listed by: AT Smith, CH Johnston, G. Jones, S. Rossiter, 2008. Retrieved January 23, 2018.
- ^ A b c Don E. Wilson & DeeAnn M. Reeder (eds.): Myotis davidii in Mammal Species of the World. A Taxonomic and Geographic Reference (3rd ed).
literature
- Don E. Wilson David's Myotis. In: Andrew T. Smith , Yan Xie: A Guide to the Mammals of China. Princeton University Press, 2008; Pp. 375-376, ISBN 978-0-691-09984-2 .
Web links
- Myotis davidii inthe IUCN 2017-3 Red List of Threatened Species . Listed by: AT Smith, CH Johnston, G. Jones, S. Rossiter, 2008. Retrieved January 23, 2018.