About Efferia aestuans (Linnaeus, 1763)
Efferia aestuans is an insect species that belongs to Asilidae, the robber fly family. This species is native to eastern North America, with a range extending from Ontario and New Hampshire in the north, south to Florida and New Mexico. It was first formally described in 1763 by Carl Linnaeus, originally published under the scientific name Asilus aestuans in Linnaeus' work Centuria Insectorum. Males of this species reach a body length of 18 millimeters, while females grow to 23 millimeters in body length.
