Findley mouse-eared
| Findley mouse-eared | ||||||||||||
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| Myotis findleyi | ||||||||||||
| Bogan , 1978 |
The Findley's mouse- eared bat ( Myotis findleyi ) is a bat in the smooth-nosed family that is found on islands in the Gulf of California . It is named after the zoologist James S. Findley , who has published several studies on the genus mouse ears ( Myotis ).
features
With a total length of 7.1 centimeters, with 2.9 to 3.3 centimeters long forearms and with a maximum weight of 3 grams, the species is one of the smallest mouse ears. It has an average of 2.6 inches long tail, 0.7 inches long hind feet and 1.2 inches long ears. Most specimens have dark brown to black fur, although there are lighter brown individuals as well.
Like Myotis carteri , which is occasionally listed as a subspecies of the black mouse-eared mouse ( Myotis nigricans ), the Findley's mouse-eared hair tips are significantly lighter. However, it is smaller than the first-mentioned species. The membranes and ears are not black, as in the Californian mouse- eared mouse ( Myotis californicus ), but brown and translucent. As an additional distinguishing feature, the Findley mouse-ear has a small notch on the calcar . Another notch is at the base of the ear. There is hair on the toes of the foot and the underside of the tail skin is covered with fur.
Distribution and way of life
The Findley's mouse-eared mouse is endemic to the Marias Islands in western Mexico . The islands rise up to 600 meters above the sea. Occasional visits to the mainland state of Nayarit are documented.
Several specimens were caught over ponds with Japanese nets . Presumably the way of life resembles the behavior of other mouse ears with resting places in caves or tree holes as well as hunting for insects.
Danger
Presumably, the introduction of foreign animals, deforestation, hurricanes and the use of island areas as state prisons have a negative effect on the population. There is a biosphere reserve on the Marias Islands . The IUCN lists the Findley mouse ear due to the low penetration and by virtue of such threats as endangered (Endangered) .
Individual evidence
- ↑ Don E. Wilson , DeeAnn M. Reeder (Ed.): Mammal Species of the World . A taxonomic and geographic Reference . 3. Edition. 2 volumes. Johns Hopkins University Press, Baltimore MD 2005, ISBN 0-8018-8221-4 (English, Myotis findleyi ).
- ↑ a b Michael A. Bogan: A New Species of Myotis from the Islas Tres Marias . In: Journal of Mammalogy . 59, No. 3, 1978, pp. 519-530. doi : 10.2307 / 1380228 .
- ↑ Gerardo Ceballos: Mammals of Mexico . JHU Press, 2014, p. 788 ( Findley's myotis ).
- ↑ a b c Myotis findleyi in the endangered Red List species the IUCN 2016 Posted by: Arroyo-Cabrales, J. & Ospina-Garces, S., 2015. Accessed January 5 2020th