Sac-winged bat

Emballonura semicaudata

The Straight Nose free tails ( Emballonuridae ), also called sac-winged bats are a bat family. The Myotis bats ( Vespertilionidae ) they are not closely related.

Dissemination

Myotis bats - free tails are common in tropical regions around the world, they are found in Central and South America, Africa, the southern regions of Asia and New Guinea, Australia and some islands in the western Pacific.

Description

The name Myotis bats free - tails suggests two features of this Fledermaustaxons: Firstly, this is a smooth, easy -built nose without a nose leaf. Secondly, this is a free tail. This is not entirely made of Uropatagium ( the flight membrane between the hind legs ) includes, but loosely connected with it only at its bottom, the tail always stands out. The name of sac-winged bats comes from the existing in many species baggy glands at the top of the wings, which secrete a red, strictly smelling secretion.

Most Myotis bats - free tails are relatively small, the body length varies from 4 cm to 15 cm and the weight of 3 g to 100 g up to the white-colored American ghost bats ( Diclidurus ) they are colored gray-brown or black.

Way of life

These bats usually live in groups, sleeping in caves, rock crevices, tree houses and caves, and often go together in search of food. Their diet consists primarily of insects to detect bats using echolocation as all. Sometimes they also take fruits to him.

System

The exact position of Myotis bats - free tails within the bats is controversial. They are usually classified as sister taxon of a taxon consisting of mouse tail -like ( Rhinopomatoidea ) and horseshoe bat -like ( Rhinolophoidea ), sometimes referred to as sister taxon of all other bats.

This group includes about 50 species in 13 genera, which can be summarized in three groups.

• Taphozoinae with the genera Saccolaimus and grave Flitter ( Taphozous )
• Emballonurinae: Emballonurini with the genera Coleura, Emballonura and Mosiah
• Diclidurini - this taxon comprises living in America genera ( Balantiopteryx, Centronycteris, Cormura, Cyttarops, American ghost bats ( Diclidurus ) Peropteryx, Rhynchonycteris and Two strips bats ( Saccopteryx ) )