| 翻訳と辞書 |
Visored bat
The visored bat, (''Sphaeronycteris toxophyllum''), is a bat species from tropical South America. It is the only species in the genus ''Sphaeronycteris''. Although visored bats have a number of unique characteristics, they are thought to be most closely related to little white-shouldered bats and wrinkle-faced bats.〔
==Description==
Visored bats range from in head-body length. They have greyish-brown fur becoming paler towards the front of the body, grey or brownish-white underparts, and white spots on each shoulder and just below the ears. They have a rounded head, with a short, hairless, snout, a wide mouth, and bulging golden-brown eyes. The ears are triangular, with a narrow tragus. Their most distinctive feature, however, is the presence of the "visor" for which they are named - a structure not found in any other bat species.
The visor consists of a horny outgrowth above and behind the horseshoe-shaped nose-leaf. In females it is a relatively small ridge-like structure, and located above the centre of each eye, from where it connects to a central ridge behind the nose-leaf. In adult males, it is much larger, reaching four times the size in females, and stretches all the way to the lateral corners of the eyes. Another unusual feature of male visored bats is the presence of a large fold of skin on the neck, which can be pulled up over the face as a mask while sleeping; the fold is much smaller and apparently non-functional in females.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Visored bat」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|