Plecotus is the scientific name for a genus of bats commonly known as the long-eared bat or the brown long-eared bat. These species are characterized by their long ears, which can measure almost the same length as their bodies. Some common synonyms for Plecotus include the brown bat, the western long-eared bat, and the eastern long-eared bat. However, it is important to note that these synonyms may also refer to other species of bats around the world. Despite their small size, these bats play a crucial role in maintaining balanced ecosystems by controlling insect populations and pollinating plants.