Great evening bat


The great evening bat is the largest bat in the vesper bat family and the only living species in the genus Ia. It is common to Eastern and Southeastern Asia, mainly living in areas with limestone caves at altitudes of. Their roost sites have been found both near the cave entrances and up to within the cave systems.

Description

The great evening bat reaches a length of. It is colored brown on the top and grayish on the bottom. Average wingspan is and it typically weighs.
Not much is known about its habits and behavior. The bat usually lives in small groups. Its food consists of insects, as with most vesper bats. The great evening bat also sometimes feeds on small birds. The bat leaves its sleeping place already in the late afternoon for the search of food. During the winter months it may migrate to warmer regions.

Status

The IUCN lists its conservation status as near-threatened. One of the threats to its survival in South Asia is human influence by habitat destruction; many caves have been turned into attractions. They have also been disturbed by farmers collecting their excrement. Also the excessive use of insecticides poses a threat to the great evening bats.

Scientific name

At four letters, Ia io is tied with Yi qi for the shortest existing scientific name of any animal under the International Code of Zoological Nomenclature, and is one of very few scientific names composed solely of vowels.