Microbat
The microbats constitute the now outdated suborder Microchiroptera within the order Chiroptera (bats). Bats were once differentiated into Megachiroptera and Microchiroptera, based on their size, but based on available molecular evidence this has now been shown to be incorrect, with the horseshoe bats being included in Yinpterochiroptera with the fruit bats and others. Most species which were termed Microchiroptera are now referred to as the Yangochiroptera.
The distinctions between microbats and megabats are:
Microbats use echolocation, whereas megabats do not typically. (The Egyptian fruit bat Rousettus egyptiacus is an exception, but does not use the larynx echolocation method of microbats, instead giving scientists the theory that it clicks using its nasal passages and back of its tongue.)
Microbats lack the claw at the second finger of the forelimb. This finger appears thinner and almost bonded by tissue with the third finger for extra support during flight.
Megabats always lack a tail, whereas this trait only occurs in certain species of microbats.