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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » Orthorrhapha » Asiloidea » Robber Flies (Asilidae) » Asilinae » Efferia » Nerax group (Efferia Nerax group) » Efferia aestuans

Species Efferia aestuans

Classification · Synonyms and other taxonomic changes · Explanation of Names · Size · Identification · Range · Remarks · See Also · Internet References · Works Cited
BG1353 D0581 - Efferia aestuans - female Hungry? - Efferia aestuans - female Robber Fly ID Request - Efferia aestuans - female Efferia aestuans robber fly - Efferia aestuans Efferia aestuans? - Efferia aestuans - female Some kind of fly - Efferia aestuans Efferia aestuans? - 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'
Size
male 19 mm, female 21 mm (1)
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(2)
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
Species profile(3)
Works Cited
1.Efferia Coquillett in America North of Mexico
Wilcox, J. 1966. Proceedings of the California Academy of Sciences, 4th series., 34:85-234.
2.Information on robber flies, compiled by F. Geller-Grimm
3.Lavers N. (2007) The robber flies of Crowley's Ridge, Arkansas: An illustrated field guide
Contributed by john and jane balaban on 14 June, 2005 - 5:36pm
Additional contributions by cotinis, Robin McLeod, v belov
Last updated 9 September, 2022 - 2:45pm

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