Hine-1919
Guides
Efferia bicaudata
Great Plains Hammertail
Efferia bicaudata is a species of robber fly in the family Asilidae, commonly known as the Great Plains Hammertail. The species was originally described as Erax bicaudatus by Hine in 1919 and later transferred to the genus Efferia. A 1964 study in the Annals of the Entomological Society of America examined its distribution, ethology, and egg morphology, representing one of the few detailed biological studies of this species. As a member of the Asilidae, it is a predatory fly that captures other insects in flight.
Efferia grandis
Great Mesquite Hammertail
Efferia grandis is a species of robber fly (family Asilidae) described by Hine in 1919. It belongs to the diverse genus Efferia, which contains many species of predatory flies found primarily in North America. The common name "Great Mesquite Hammertail" suggests an association with mesquite habitats, though specific ecological details remain limited in available sources.
Efferia willistoni
Williston Hammertail
Efferia willistoni is a species of robber fly in the family Asilidae, commonly known as the Williston Hammertail. It is one of approximately 200 species in the genus Efferia, a diverse group of predatory flies distributed primarily in the Americas. The species was described by Hine in 1919. As with other asilids, it is presumed to be an active aerial predator of other insects.