MegachiropteraMicrochiroptera

Megachiroptera and Microchiroptera are the two suborders of the order Chiroptera, commonly known as bats. This traditional classification, while historically significant, is now understood to be paraphyletic, meaning it does not include all descendants of a common ancestor. Current genetic and morphological evidence suggests that Microchiroptera is not a monophyletic group and that the traditional division may not accurately reflect evolutionary relationships.

Megachiroptera, often referred to as fruit bats or flying foxes, are generally larger than microbats. They are found in tropical and subtropical regions of the Old World. A key characteristic traditionally associated with Megachiroptera is their reliance on vision and smell for navigation and foraging, rather than echolocation. They primarily feed on fruits, nectar, and pollen.

Microchiroptera, on the other hand, encompasses the vast majority of bat species and is found worldwide. These bats are typically smaller and are known for their sophisticated use of echolocation for navigation and hunting insects, fish, or other prey in complete darkness. Their diets are diverse, including insects, fruits, nectar, and even blood in the case of the three species of vampire bats.

The paraphyletic nature of this division means that some groups traditionally placed within Microchiroptera are more closely related to Megachiroptera than to other microbat groups. This has led to ongoing research and revisions in bat taxonomy. While the terms Megachiroptera and Microchiroptera are still in common use, particularly in ecological and behavioral contexts, modern scientific understanding emphasizes alternative groupings that better reflect the evolutionary history of bats.