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Species Efferia aestuans

Friendly Robber - Efferia aestuans - male Woodland robber - Efferia aestuans Efferia (Nerax) aestuans - Efferia aestuans - female Robber Fly ID Request - Efferia aestuans Efferia aestuans Mating Robber flies, which kind? - Efferia aestuans - male - female Robber fly - Efferia aestuans Large Robberfly - Efferia aestuans
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Orthorrhapha)
Superfamily Asiloidea
Family Asilidae (Robber Flies)
Subfamily Asilinae
Genus Efferia
No Taxon (Nerax group)
Species aestuans (Efferia aestuans)
Synonyms and other taxonomic changes
Nerax aestuans
Explanation of Names
Efferia aestuans (Linnaeus 1763)
aestuans = 'scolding, boiling'
tibiae partially reddish, mystax black, ventral surface of abdomen has long white hairs; female has long blade-like ovipositor
The most likely robber fly to land on humans. (comment by Herschel Raney)
Sometimes fearless. The males are much less common and harder to approach. (comment by Herschel Raney)
The commonest species of Asilinae in the northeast (comment by Herschel Raney)
The type species of Efferia
See Also
E. albibarbis has white mystax, and shorter, more cone-like ovipositor
Internet References