Murina tenebrosa

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
ANIMALIA	CHORDATA	MAMMALIA	CHIROPTERA	VESPERTILIONIDAE

Scientific Name:

Murina tenebrosa

Species Authority:

Yoshiyuki, 1970

Common Name/s:

English

–

Gloomy Tube-nosed Bat, Tsushima Tube-nosed Bat

Assessment Information [top]

Red List Category & Criteria:

Critically Endangered D ver 3.1

Year Published:

2008

Assessor/s:

Maeda, K.

Reviewer/s:

Hutson, A.M., Racey, P.A. (Chiroptera Red List Authority) & Chanson, J. (Global Mammal Assessment Team)

Contributor/s:

Justification:
Listed as Critically Endangered (Possibly Extinct), because it has not been collected again since 1962 despite some survey effort and is currently known only from one specimen. There has been significant destruction of the forest on the island from which it was collected, although the habitat requirements of the species are not known. Further surveys are needed to confirm whether or not this species still survives.

History:

2000	–	Critically Endangered
1996	–	Data Deficient

Geographic Range [top]

Range Description:	This species is known only from the type specimen collected in 1962 from Tsushima Island, Japan (Abe, et al., 2005). There is also a possibility that a bat collected on Yaku Island represents the same species (Abe, et al., 2005).
Countries:	Possibly extinct: Japan
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	Recent surveys on Tsushima Island, including both cave searches in winter (2005; K. Armstrong pers. comm.) and mist-netting efforts about 10 years ago during the summer (Maeda pers. comm.), have not recorded this species. The species could possibly be extinct.
Population Trend:	Unknown

Habitat and Ecology [top]

Habitat and Ecology:	The type specimen was collected in a cave, although it could be a tree-hollow or foliage dwelling species dependent on large trees.
Systems:	Terrestrial

Threats [top]

Major Threat(s):	There is only a small patch of intact forest remaining on Tsushima, but there are very few caves available for roosting.

Major Threat(s):

There is only a small patch of intact forest remaining on Tsushima, but there are very few caves available for roosting.

Conservation Actions [top]

Conservation Actions:	This species urgently requires additional surveys, covering the entire island (particularly in the fragments of primary forest remaining in the north and south), and ideally using other trapping techniques (mist-netting is not appropriate). This species is listed as Data Deficient (DD) in the Japanese Red List (2007).

Conservation Actions:

This species urgently requires additional surveys, covering the entire island (particularly in the fragments of primary forest remaining in the north and south), and ideally using other trapping techniques (mist-netting is not appropriate). This species is listed as Data Deficient (DD) in the Japanese Red List (2007).

Citation:	Maeda, K. 2008. Murina tenebrosa. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 23 May 2013.
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