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TaxonomyBrowse
Info
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Species Efferia aestuans

Unidentified Robber Fly - Efferia aestuans - male A Robber Fly to represent SC - Efferia aestuans - female Robber Fly - Efferia aestuans - female robber fly - Efferia aestuans robber fly - Efferia aestuans Robber Fly - Lateral - Efferia aestuans - female Efferia? - Efferia aestuans - male Robber fly laying eggs - Efferia aestuans - female
Classification
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'
Identification
tibiae partially reddish, mystax black, ventral surface of abdomen has long white hairs; female has long blade-like ovipositor
Range
NH-ON-FL to ND-WY-UT-NM(1)
Remarks
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