Phyllostomus hastatus is a scientific name of a bat species commonly known as the greater spear-nosed bat. Some synonyms for this species include Macrophyllum hastatum, Phyllopyga hastata, Diclidurus argentinensis, and Rhinopoma bivittatum. These synonyms are used to refer to the same bat species in different scientific contexts or taxonomic classifications. The greater spear-nosed bat is a common species found in various regions of South America and is known for its distinctive long-nosed structure used for echolocation and nectar feeding. The use of synonyms is common in scientific fields to avoid confusion and promote consistent communication.