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Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

National Moth Week 2020 photos of insects and people.

Photos of insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

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TaxonomyBrowse
Info
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Nerax group

Robber fly - Efferia aestuans - female Robber Fly...but what kind - Efferia robber fly - Efferia aestuans - female robber fly - Efferia aestuans Efferia? - Efferia aestuans - male Efferia aestuans - male Robber Fly eating another of the same species - Efferia aestuans - female Efferia? - 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
Synonyms and other taxonomic changes
=Nerax Hull 1962
Numbers
13 spp. in our area, 65 total(1)
Identification
The following information is based on the modified Key to Eastern Species: (2) For info on the listed reference terms see the wing diagrams here.
1) - Furcation of third vein opposite or beyond base of second posterior cell;
18) - Posterior branch of third vein (R5) curved backward at tip, meeting the costa at or beyond apex of wing = (Nerax/aestuans group)

Examples:
Efferia aestuans
Efferia tabescens