Eastern fringed bat

Eastern fringed bat
Systematics
Order :	Bats (chiroptera)
Superfamily :	Smooth-nosed (Vespertilionoidea)
Family :	Smooth-nosed (Vespertilionidae)
Subfamily :	Myotinae
Genre :	Mouse ears ( myotis )
Type :	Eastern fringed bat
Scientific name
	Myotis bombinus
	Thomas , 1906

The eastern fringed bat ( Myotis bombinus ) is a type of mouse- eared bat ( Myotis ) within the bats (Chiroptera). It is spread over parts of East Asia from the east of the People's Republic of China and Russia to Korea and Japan .

features

The eastern fringed bat reaches a head-trunk length of 41 to 52 millimeters and a tail length of 38 to 45 millimeters. The hind feet are 8 to 12 millimeters long. The ears measure 14 to 19 millimeters, they are long and narrow in shape with a narrow tip and an equally narrow tragus . Overall, it is a small to medium-sized bat species. The forearm length is 37 to 42 millimeters. The fur is soft and woolly. It is dark brown on the back with a reddish-brown base and a little paler on the belly. The flight membrane starts at the base of the toes, the calcar is long and keeled. At the free end of the tail membrane there is a row of stiff bristles that are straight or slightly curved in this species.

The skull has a total length of about 14 millimeters, it is elongated and robustly built with a short snout region (rostrum) and a long brain skull. The third upper premolar P3 is in the row of teeth or slightly offset.

distribution

Distribution areas of the eastern fringed bat (according to information from the IUCN)

The eastern fringed bat is distributed over parts of East Asia from the east of the People's Republic of China and Russian Siberia to the Pacific coast and to Korea and Japan . In China it is found in Heilongjiang and Jilin . In Japan, the species lives on the islands of Hokkaido , Honshu , Shikoku , Kyushu , Kuchinoerabu-jima and Yakushima .

Way of life

Very little information is available on the bat species' lifestyle and ecological demands. They rest in caves, houses and old houses and form small colonies. They are probably partly draft animals and hunt in forest areas.

Systematics

The eastern fringed bat is assigned to the mouse-eared bat (genus Myotis ) as an independent species . The first scientific description comes from Oldfield Thomas from 1906, who described it using individuals from the Japanese prefecture of Miyazaki on the island of Kyūshū . In earlier work, the species was partially regarded as a subspecies of the fringed bat ( Myotis natteri ), which does not occur further east than Turkmenistan . In some cases, a change of the name to M. bombina due to the female generic name with the ending "-otis" was proposed, but not implemented.

Within the species, in addition to the nominate form M. bombinus bombinus, the second subspecies is M. bombinus amurensis Ognev, 1927.

Hazard and protection

The species is classified by the International Union for Conservation of Nature and Natural Resources (IUCN) as a type of the warning list ("near threatened"). This is justified primarily by the assumption of a population decline due to the deforestation of older forest areas and the disturbances by humans in the wintering areas of the species. However, hardly any data are available on the populations and the way of life and generation duration. There is no information on the size of the population in South Asia, in the Southeast Asian distribution areas it is a regularly occurring species.

supporting documents

↑ ^a ^b ^c ^d ^e ^f Don E. Wilson Far Eastern Myotis. In: Andrew T. Smith , Yan Xie: A Guide to the Mammals of China. Princeton University Press, 2008; P. 374, ISBN 978-0-691-09984-2 .

↑ ^a ^b ^c ^d ^e ^f Myotis bombinus in the IUCN 2017-3 Red List of Threatened Species . Posted by: K. Tsytsulina, 2008. Retrieved January 19, 2018.

^ ^A ^b ^c Don E. Wilson & DeeAnn M. Reeder (eds.): Myotis bombinus in Mammal Species of the World. A Taxonomic and Geographic Reference (3rd ed).

literature

Don E. Wilson Far Eastern Myotis. In: Andrew T. Smith , Yan Xie: A Guide to the Mammals of China. Princeton University Press, 2008; P. 374, ISBN 978-0-691-09984-2 .

Web links

Commons : Eastern fringed bat ( Myotis bombinus ) - Collection of images, videos and audio files

Myotis bombinus inthe IUCN 2017-3 Red List of Threatened Species . Posted by: K. Tsytsulina, 2008. Retrieved January 19, 2018.

[Smith_&_Yan_Xie_2009-1] ↑ ^a ^b ^c ^d ^e ^f Don E. Wilson Far Eastern Myotis. In: Andrew T. Smith , Yan Xie: A Guide to the Mammals of China. Princeton University Press, 2008; P. 374, ISBN 978-0-691-09984-2 .