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Genus Efferia (Robber Flies) - ♂ | by Calopteron
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Genus Efferia (Robber Flies) - ♂

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


Efferia Coquillett 1893

from Latin efferus 'wild, savage'


"In the blink of an eye the prey is trapped by six powerful, hairy robber fly legs. Without bothering to land, the robber fly thrusts a solid proboscis into its prey, which may well be an insect larger than itself -- in warmer areas, it may even be a hummingbird. The robber fly injects its victim with a cocktail of spit, poison, and digestive fluids instantly transforming the innards of the trapped creature into a kind of insect smoothie served up in a handy beaker. A couple of swift slurps -- generally at top speed -- and the robber fly casts aside the empty shell. Not for nothing are these roughnecks also known as "assassin flies."" Anne Sverdrup-Thygesen, "Buzz Sting Bite." 2018.


What's not to love about robber flies!


Canon MP-E 65mm; full-frame DSLR; Helicon Focus 7; 1X magnification.


August 16, 2019; Leon County; Woodville, Florida


Long-leaf Pine forest. Public lands.



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Uploaded on August 18, 2019